Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China

Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpa...
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Autor*in:	Liu, Jing [verfasserIn] Li, Siliang Zhong, Jun Zhu, Xuetao Guo, Qingjun Lang, Yunchao Han, Xiaokun

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2017

Schlagwörter:	Sulfur isotope Oxygen isotope Riverine sulfate Carbonate weathering Xijiang River

Anmerkung:	© The Author(s) 2017

Übergeordnetes Werk:	Enthalten in: Chinese journal of geochemistry - Beijing : Science Press, 1982, 36(2017), 4 vom: 16. Mai, Seite 611-618
Übergeordnetes Werk:	volume:36 ; year:2017 ; number:4 ; day:16 ; month:05 ; pages:611-618

Links:	Volltext

DOI / URN:	10.1007/s11631-017-0175-1

Katalog-ID:	SPR02127925X

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allfields	10.1007/s11631-017-0175-1 doi (DE-627)SPR02127925X (SPR)s11631-017-0175-1-e DE-627 ger DE-627 rakwb eng Liu, Jing verfasserin aut Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2017 Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the $ SO_{4} $2− contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of $ HCO_{3} $− was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the $ HCO_{3} $− in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. Sulfur isotope (dpeaa)DE-He213 Oxygen isotope (dpeaa)DE-He213 Riverine sulfate (dpeaa)DE-He213 Carbonate weathering (dpeaa)DE-He213 Xijiang River (dpeaa)DE-He213 Li, Siliang aut Zhong, Jun aut Zhu, Xuetao aut Guo, Qingjun aut Lang, Yunchao aut Han, Xiaokun aut Enthalten in Chinese journal of geochemistry Beijing : Science Press, 1982 36(2017), 4 vom: 16. Mai, Seite 611-618 (DE-627)341897779 (DE-600)2069518-4 1993-0364 nnns volume:36 year:2017 number:4 day:16 month:05 pages:611-618 https://dx.doi.org/10.1007/s11631-017-0175-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_110 GBV_ILN_152 GBV_ILN_161 GBV_ILN_187 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2700 AR 36 2017 4 16 05 611-618
spelling	10.1007/s11631-017-0175-1 doi (DE-627)SPR02127925X (SPR)s11631-017-0175-1-e DE-627 ger DE-627 rakwb eng Liu, Jing verfasserin aut Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2017 Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the $ SO_{4} $2− contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of $ HCO_{3} $− was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the $ HCO_{3} $− in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. Sulfur isotope (dpeaa)DE-He213 Oxygen isotope (dpeaa)DE-He213 Riverine sulfate (dpeaa)DE-He213 Carbonate weathering (dpeaa)DE-He213 Xijiang River (dpeaa)DE-He213 Li, Siliang aut Zhong, Jun aut Zhu, Xuetao aut Guo, Qingjun aut Lang, Yunchao aut Han, Xiaokun aut Enthalten in Chinese journal of geochemistry Beijing : Science Press, 1982 36(2017), 4 vom: 16. Mai, Seite 611-618 (DE-627)341897779 (DE-600)2069518-4 1993-0364 nnns volume:36 year:2017 number:4 day:16 month:05 pages:611-618 https://dx.doi.org/10.1007/s11631-017-0175-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_110 GBV_ILN_152 GBV_ILN_161 GBV_ILN_187 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2700 AR 36 2017 4 16 05 611-618
allfields_unstemmed	10.1007/s11631-017-0175-1 doi (DE-627)SPR02127925X (SPR)s11631-017-0175-1-e DE-627 ger DE-627 rakwb eng Liu, Jing verfasserin aut Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2017 Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the $ SO_{4} $2− contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of $ HCO_{3} $− was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the $ HCO_{3} $− in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. Sulfur isotope (dpeaa)DE-He213 Oxygen isotope (dpeaa)DE-He213 Riverine sulfate (dpeaa)DE-He213 Carbonate weathering (dpeaa)DE-He213 Xijiang River (dpeaa)DE-He213 Li, Siliang aut Zhong, Jun aut Zhu, Xuetao aut Guo, Qingjun aut Lang, Yunchao aut Han, Xiaokun aut Enthalten in Chinese journal of geochemistry Beijing : Science Press, 1982 36(2017), 4 vom: 16. Mai, Seite 611-618 (DE-627)341897779 (DE-600)2069518-4 1993-0364 nnns volume:36 year:2017 number:4 day:16 month:05 pages:611-618 https://dx.doi.org/10.1007/s11631-017-0175-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_110 GBV_ILN_152 GBV_ILN_161 GBV_ILN_187 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2700 AR 36 2017 4 16 05 611-618
allfieldsGer	10.1007/s11631-017-0175-1 doi (DE-627)SPR02127925X (SPR)s11631-017-0175-1-e DE-627 ger DE-627 rakwb eng Liu, Jing verfasserin aut Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2017 Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the $ SO_{4} $2− contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of $ HCO_{3} $− was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the $ HCO_{3} $− in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. Sulfur isotope (dpeaa)DE-He213 Oxygen isotope (dpeaa)DE-He213 Riverine sulfate (dpeaa)DE-He213 Carbonate weathering (dpeaa)DE-He213 Xijiang River (dpeaa)DE-He213 Li, Siliang aut Zhong, Jun aut Zhu, Xuetao aut Guo, Qingjun aut Lang, Yunchao aut Han, Xiaokun aut Enthalten in Chinese journal of geochemistry Beijing : Science Press, 1982 36(2017), 4 vom: 16. Mai, Seite 611-618 (DE-627)341897779 (DE-600)2069518-4 1993-0364 nnns volume:36 year:2017 number:4 day:16 month:05 pages:611-618 https://dx.doi.org/10.1007/s11631-017-0175-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_110 GBV_ILN_152 GBV_ILN_161 GBV_ILN_187 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2700 AR 36 2017 4 16 05 611-618
allfieldsSound	10.1007/s11631-017-0175-1 doi (DE-627)SPR02127925X (SPR)s11631-017-0175-1-e DE-627 ger DE-627 rakwb eng Liu, Jing verfasserin aut Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Author(s) 2017 Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the $ SO_{4} $2− contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of $ HCO_{3} $− was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the $ HCO_{3} $− in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. Sulfur isotope (dpeaa)DE-He213 Oxygen isotope (dpeaa)DE-He213 Riverine sulfate (dpeaa)DE-He213 Carbonate weathering (dpeaa)DE-He213 Xijiang River (dpeaa)DE-He213 Li, Siliang aut Zhong, Jun aut Zhu, Xuetao aut Guo, Qingjun aut Lang, Yunchao aut Han, Xiaokun aut Enthalten in Chinese journal of geochemistry Beijing : Science Press, 1982 36(2017), 4 vom: 16. Mai, Seite 611-618 (DE-627)341897779 (DE-600)2069518-4 1993-0364 nnns volume:36 year:2017 number:4 day:16 month:05 pages:611-618 https://dx.doi.org/10.1007/s11631-017-0175-1 kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_110 GBV_ILN_152 GBV_ILN_161 GBV_ILN_187 GBV_ILN_293 GBV_ILN_370 GBV_ILN_374 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2700 AR 36 2017 4 16 05 611-618
language	English
source	Enthalten in Chinese journal of geochemistry 36(2017), 4 vom: 16. Mai, Seite 611-618 volume:36 year:2017 number:4 day:16 month:05 pages:611-618
sourceStr	Enthalten in Chinese journal of geochemistry 36(2017), 4 vom: 16. Mai, Seite 611-618 volume:36 year:2017 number:4 day:16 month:05 pages:611-618
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Sulfur isotope Oxygen isotope Riverine sulfate Carbonate weathering Xijiang River
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container_title	Chinese journal of geochemistry
authorswithroles_txt_mv	Liu, Jing @@aut@@ Li, Siliang @@aut@@ Zhong, Jun @@aut@@ Zhu, Xuetao @@aut@@ Guo, Qingjun @@aut@@ Lang, Yunchao @@aut@@ Han, Xiaokun @@aut@@
publishDateDaySort_date	2017-05-16T00:00:00Z
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author	Liu, Jing
spellingShingle	Liu, Jing misc Sulfur isotope misc Oxygen isotope misc Riverine sulfate misc Carbonate weathering misc Xijiang River Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China
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topic_title	Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China Sulfur isotope (dpeaa)DE-He213 Oxygen isotope (dpeaa)DE-He213 Riverine sulfate (dpeaa)DE-He213 Carbonate weathering (dpeaa)DE-He213 Xijiang River (dpeaa)DE-He213
topic	misc Sulfur isotope misc Oxygen isotope misc Riverine sulfate misc Carbonate weathering misc Xijiang River
topic_unstemmed	misc Sulfur isotope misc Oxygen isotope misc Riverine sulfate misc Carbonate weathering misc Xijiang River
topic_browse	misc Sulfur isotope misc Oxygen isotope misc Riverine sulfate misc Carbonate weathering misc Xijiang River
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title	Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China
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title_full	Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China
author_sort	Liu, Jing
journal	Chinese journal of geochemistry
journalStr	Chinese journal of geochemistry
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author_browse	Liu, Jing Li, Siliang Zhong, Jun Zhu, Xuetao Guo, Qingjun Lang, Yunchao Han, Xiaokun
container_volume	36
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author-letter	Liu, Jing
doi_str_mv	10.1007/s11631-017-0175-1
title_sort	sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the xijiang river, china
title_auth	Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China
abstract	Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the $ SO_{4} $2− contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of $ HCO_{3} $− was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the $ HCO_{3} $− in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. © The Author(s) 2017
abstractGer	Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the $ SO_{4} $2− contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of $ HCO_{3} $− was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the $ HCO_{3} $− in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. © The Author(s) 2017
abstract_unstemmed	Abstract While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids. We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the $ SO_{4} $2− contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. A relatively high proportion of $ HCO_{3} $− was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the $ HCO_{3} $− in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. © The Author(s) 2017
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title_short	Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River, China
url	https://dx.doi.org/10.1007/s11631-017-0175-1
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author2	Li, Siliang Zhong, Jun Zhu, Xuetao Guo, Qingjun Lang, Yunchao Han, Xiaokun
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