Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling
Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Meng, Mei [verfasserIn] Sun, Ruo-yu [verfasserIn] Liu, Hong-wei [verfasserIn] Yu, Ben [verfasserIn] Yin, Yong-guang [verfasserIn] Hu, Li-gang [verfasserIn] Chen, Jiu-bin [verfasserIn] Shi, Jian-bo [verfasserIn] Jiang, Gui-bin [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2019 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Journal of hazardous materials - New York, NY [u.a.] : Science Direct, 1976, 384 |
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| Übergeordnetes Werk: |
volume:384 |
| DOI / URN: |
10.1016/j.jhazmat.2019.121379 |
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ELV003315460 |
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| 245 | 1 | 0 | |a Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling |
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| 520 | |a Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. | ||
| 650 | 4 | |a Mercury isotope fractionation | |
| 650 | 4 | |a Trophic transfer | |
| 650 | 4 | |a Methylmercury source | |
| 650 | 4 | |a Photo-demethylation | |
| 650 | 4 | |a Atmospheric Hg | |
| 700 | 1 | |a Sun, Ruo-yu |e verfasserin |0 (orcid)0000-0001-7261-8377 |4 aut | |
| 700 | 1 | |a Liu, Hong-wei |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Ben |e verfasserin |4 aut | |
| 700 | 1 | |a Yin, Yong-guang |e verfasserin |0 (orcid)0000-0001-9392-6256 |4 aut | |
| 700 | 1 | |a Hu, Li-gang |e verfasserin |0 (orcid)0000-0002-6213-4720 |4 aut | |
| 700 | 1 | |a Chen, Jiu-bin |e verfasserin |4 aut | |
| 700 | 1 | |a Shi, Jian-bo |e verfasserin |0 (orcid)0000-0003-2637-1929 |4 aut | |
| 700 | 1 | |a Jiang, Gui-bin |e verfasserin |4 aut | |
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10.1016/j.jhazmat.2019.121379 doi (DE-627)ELV003315460 (ELSEVIER)S0304-3894(19)31333-0 DE-627 ger DE-627 rda eng 530 DE-600 43.13 bkl 50.17 bkl 58.53 bkl Meng, Mei verfasserin (orcid)0000-0003-1537-1093 aut Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. Mercury isotope fractionation Trophic transfer Methylmercury source Photo-demethylation Atmospheric Hg Sun, Ruo-yu verfasserin (orcid)0000-0001-7261-8377 aut Liu, Hong-wei verfasserin aut Yu, Ben verfasserin aut Yin, Yong-guang verfasserin (orcid)0000-0001-9392-6256 aut Hu, Li-gang verfasserin (orcid)0000-0002-6213-4720 aut Chen, Jiu-bin verfasserin aut Shi, Jian-bo verfasserin (orcid)0000-0003-2637-1929 aut Jiang, Gui-bin verfasserin aut Enthalten in Journal of hazardous materials New York, NY [u.a.] : Science Direct, 1976 384 Online-Ressource (DE-627)302467904 (DE-600)1491302-1 (DE-576)259483893 1873-3336 nnns volume:384 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 43.13 Umwelttoxikologie 50.17 Sicherheitstechnik 58.53 Abfallwirtschaft AR 384 |
| spelling |
10.1016/j.jhazmat.2019.121379 doi (DE-627)ELV003315460 (ELSEVIER)S0304-3894(19)31333-0 DE-627 ger DE-627 rda eng 530 DE-600 43.13 bkl 50.17 bkl 58.53 bkl Meng, Mei verfasserin (orcid)0000-0003-1537-1093 aut Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. Mercury isotope fractionation Trophic transfer Methylmercury source Photo-demethylation Atmospheric Hg Sun, Ruo-yu verfasserin (orcid)0000-0001-7261-8377 aut Liu, Hong-wei verfasserin aut Yu, Ben verfasserin aut Yin, Yong-guang verfasserin (orcid)0000-0001-9392-6256 aut Hu, Li-gang verfasserin (orcid)0000-0002-6213-4720 aut Chen, Jiu-bin verfasserin aut Shi, Jian-bo verfasserin (orcid)0000-0003-2637-1929 aut Jiang, Gui-bin verfasserin aut Enthalten in Journal of hazardous materials New York, NY [u.a.] : Science Direct, 1976 384 Online-Ressource (DE-627)302467904 (DE-600)1491302-1 (DE-576)259483893 1873-3336 nnns volume:384 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 43.13 Umwelttoxikologie 50.17 Sicherheitstechnik 58.53 Abfallwirtschaft AR 384 |
| allfields_unstemmed |
10.1016/j.jhazmat.2019.121379 doi (DE-627)ELV003315460 (ELSEVIER)S0304-3894(19)31333-0 DE-627 ger DE-627 rda eng 530 DE-600 43.13 bkl 50.17 bkl 58.53 bkl Meng, Mei verfasserin (orcid)0000-0003-1537-1093 aut Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. Mercury isotope fractionation Trophic transfer Methylmercury source Photo-demethylation Atmospheric Hg Sun, Ruo-yu verfasserin (orcid)0000-0001-7261-8377 aut Liu, Hong-wei verfasserin aut Yu, Ben verfasserin aut Yin, Yong-guang verfasserin (orcid)0000-0001-9392-6256 aut Hu, Li-gang verfasserin (orcid)0000-0002-6213-4720 aut Chen, Jiu-bin verfasserin aut Shi, Jian-bo verfasserin (orcid)0000-0003-2637-1929 aut Jiang, Gui-bin verfasserin aut Enthalten in Journal of hazardous materials New York, NY [u.a.] : Science Direct, 1976 384 Online-Ressource (DE-627)302467904 (DE-600)1491302-1 (DE-576)259483893 1873-3336 nnns volume:384 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 43.13 Umwelttoxikologie 50.17 Sicherheitstechnik 58.53 Abfallwirtschaft AR 384 |
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10.1016/j.jhazmat.2019.121379 doi (DE-627)ELV003315460 (ELSEVIER)S0304-3894(19)31333-0 DE-627 ger DE-627 rda eng 530 DE-600 43.13 bkl 50.17 bkl 58.53 bkl Meng, Mei verfasserin (orcid)0000-0003-1537-1093 aut Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. Mercury isotope fractionation Trophic transfer Methylmercury source Photo-demethylation Atmospheric Hg Sun, Ruo-yu verfasserin (orcid)0000-0001-7261-8377 aut Liu, Hong-wei verfasserin aut Yu, Ben verfasserin aut Yin, Yong-guang verfasserin (orcid)0000-0001-9392-6256 aut Hu, Li-gang verfasserin (orcid)0000-0002-6213-4720 aut Chen, Jiu-bin verfasserin aut Shi, Jian-bo verfasserin (orcid)0000-0003-2637-1929 aut Jiang, Gui-bin verfasserin aut Enthalten in Journal of hazardous materials New York, NY [u.a.] : Science Direct, 1976 384 Online-Ressource (DE-627)302467904 (DE-600)1491302-1 (DE-576)259483893 1873-3336 nnns volume:384 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 43.13 Umwelttoxikologie 50.17 Sicherheitstechnik 58.53 Abfallwirtschaft AR 384 |
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10.1016/j.jhazmat.2019.121379 doi (DE-627)ELV003315460 (ELSEVIER)S0304-3894(19)31333-0 DE-627 ger DE-627 rda eng 530 DE-600 43.13 bkl 50.17 bkl 58.53 bkl Meng, Mei verfasserin (orcid)0000-0003-1537-1093 aut Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. Mercury isotope fractionation Trophic transfer Methylmercury source Photo-demethylation Atmospheric Hg Sun, Ruo-yu verfasserin (orcid)0000-0001-7261-8377 aut Liu, Hong-wei verfasserin aut Yu, Ben verfasserin aut Yin, Yong-guang verfasserin (orcid)0000-0001-9392-6256 aut Hu, Li-gang verfasserin (orcid)0000-0002-6213-4720 aut Chen, Jiu-bin verfasserin aut Shi, Jian-bo verfasserin (orcid)0000-0003-2637-1929 aut Jiang, Gui-bin verfasserin aut Enthalten in Journal of hazardous materials New York, NY [u.a.] : Science Direct, 1976 384 Online-Ressource (DE-627)302467904 (DE-600)1491302-1 (DE-576)259483893 1873-3336 nnns volume:384 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 43.13 Umwelttoxikologie 50.17 Sicherheitstechnik 58.53 Abfallwirtschaft AR 384 |
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Mercury isotope fractionation Trophic transfer Methylmercury source Photo-demethylation Atmospheric Hg |
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Meng, Mei @@aut@@ Sun, Ruo-yu @@aut@@ Liu, Hong-wei @@aut@@ Yu, Ben @@aut@@ Yin, Yong-guang @@aut@@ Hu, Li-gang @@aut@@ Chen, Jiu-bin @@aut@@ Shi, Jian-bo @@aut@@ Jiang, Gui-bin @@aut@@ |
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2019-01-01T00:00:00Z |
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Meng, Mei |
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530 DE-600 43.13 bkl 50.17 bkl 58.53 bkl Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling Mercury isotope fractionation Trophic transfer Methylmercury source Photo-demethylation Atmospheric Hg |
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Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling |
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Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling |
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Meng, Mei Sun, Ruo-yu Liu, Hong-wei Yu, Ben Yin, Yong-guang Hu, Li-gang Chen, Jiu-bin Shi, Jian-bo Jiang, Gui-bin |
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mercury isotope variations within the marine food web of chinese bohai sea: implications for mercury sources and biogeochemical cycling |
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Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling |
| abstract |
Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. |
| abstractGer |
Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. |
| abstract_unstemmed |
Mercury (Hg) speciation and isotopic compositions in a large-scale food web and seawater from Chinese Bohai Sea were analyzed to investigate methylmercury (MeHg) sources and Hg cycling. The biota showed ∼5‰ variation in mass dependent fractionation (MDF, −4.57 to 0.53‰ in δ 202Hg) and mostly positive odd-isotope mass independent fractionation (odd-MIF, −0.01 to 1.21‰ in Δ199Hg). Both MDF and odd-MIF in coastal biota showed significant correlations with their trophic levels and MeHg fractions, likely reflecting a preferential trophic transfer of MeHg with higher δ 202Hg and Δ199Hg than inorganic Hg. The MDF and odd-MIF of biota were largely affected by their feeding habits and living territories, and MeHg in pelagic food web was more photodegraded than in coastal food web (21–31% vs. 9–11%). From the Hg isotope signatures of pelagic biota and extrapolated coastal MeHg, we suggest that MeHg in the food webs was likely derived from sediments. Interestingly, we observed complementary even-MIF (mainly negative Δ200Hg of −0.36 to 0.08‰ and positive Δ204Hg of −0.05 to 0.82‰) in the biota and a significant linear slope of −0.5 for Δ200Hg/Δ204Hg. This leads us to speculate that atmospheric Hg0 is an important source to bioaccumulated MeHg, although the exact source-receptor relationships need further investigation. |
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Mercury isotope variations within the marine food web of Chinese Bohai Sea: Implications for mercury sources and biogeochemical cycling |
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| score |
7.4003716 |