Radiochemical determination of chromium at ultratrace levels in biological materials
Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical se...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1994 |
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| Umfang: |
7 |
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| Reproduktion: |
Springer Online Journal Archives 1860-2002 |
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| Übergeordnetes Werk: |
in: Journal of radioanalytical and nuclear chemistry - 1968, 178(1994) vom: Jan., Seite 19-25 |
| Übergeordnetes Werk: |
volume:178 ; year:1994 ; month:01 ; pages:19-25 ; extent:7 |
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NLEJ194917673 |
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| 245 | 1 | 0 | |a Radiochemical determination of chromium at ultratrace levels in biological materials |
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| 520 | |a Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. | ||
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| 700 | 1 | |a Schnabel, C. |4 oth | |
| 700 | 1 | |a Herpers, U. |4 oth | |
| 700 | 1 | |a Michel, R. |4 oth | |
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(DE-627)NLEJ194917673 DE-627 ger DE-627 rakwb eng Radiochemical determination of chromium at ultratrace levels in biological materials 1994 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. Springer Online Journal Archives 1860-2002 Schnabel, C. oth Herpers, U. oth Michel, R. oth in Journal of radioanalytical and nuclear chemistry 1968 178(1994) vom: Jan., Seite 19-25 (DE-627)NLEJ188994238 (DE-600)2017242-4 1588-2780 nnns volume:178 year:1994 month:01 pages:19-25 extent:7 http://dx.doi.org/10.1007/BF02068653 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 178 1994 1 19-25 7 |
| spelling |
(DE-627)NLEJ194917673 DE-627 ger DE-627 rakwb eng Radiochemical determination of chromium at ultratrace levels in biological materials 1994 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. Springer Online Journal Archives 1860-2002 Schnabel, C. oth Herpers, U. oth Michel, R. oth in Journal of radioanalytical and nuclear chemistry 1968 178(1994) vom: Jan., Seite 19-25 (DE-627)NLEJ188994238 (DE-600)2017242-4 1588-2780 nnns volume:178 year:1994 month:01 pages:19-25 extent:7 http://dx.doi.org/10.1007/BF02068653 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 178 1994 1 19-25 7 |
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(DE-627)NLEJ194917673 DE-627 ger DE-627 rakwb eng Radiochemical determination of chromium at ultratrace levels in biological materials 1994 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. Springer Online Journal Archives 1860-2002 Schnabel, C. oth Herpers, U. oth Michel, R. oth in Journal of radioanalytical and nuclear chemistry 1968 178(1994) vom: Jan., Seite 19-25 (DE-627)NLEJ188994238 (DE-600)2017242-4 1588-2780 nnns volume:178 year:1994 month:01 pages:19-25 extent:7 http://dx.doi.org/10.1007/BF02068653 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 178 1994 1 19-25 7 |
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(DE-627)NLEJ194917673 DE-627 ger DE-627 rakwb eng Radiochemical determination of chromium at ultratrace levels in biological materials 1994 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. Springer Online Journal Archives 1860-2002 Schnabel, C. oth Herpers, U. oth Michel, R. oth in Journal of radioanalytical and nuclear chemistry 1968 178(1994) vom: Jan., Seite 19-25 (DE-627)NLEJ188994238 (DE-600)2017242-4 1588-2780 nnns volume:178 year:1994 month:01 pages:19-25 extent:7 http://dx.doi.org/10.1007/BF02068653 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 178 1994 1 19-25 7 |
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(DE-627)NLEJ194917673 DE-627 ger DE-627 rakwb eng Radiochemical determination of chromium at ultratrace levels in biological materials 1994 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. Springer Online Journal Archives 1860-2002 Schnabel, C. oth Herpers, U. oth Michel, R. oth in Journal of radioanalytical and nuclear chemistry 1968 178(1994) vom: Jan., Seite 19-25 (DE-627)NLEJ188994238 (DE-600)2017242-4 1588-2780 nnns volume:178 year:1994 month:01 pages:19-25 extent:7 http://dx.doi.org/10.1007/BF02068653 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 178 1994 1 19-25 7 |
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Radiochemical determination of chromium at ultratrace levels in biological materials |
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Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. |
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Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. |
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Abstract Determination of chromium at naturally occuring levels in biological materials requires very low detection limits and dust-free conditions during sampling. These levels are of interest in order to distinguish from enhanced levels which may be carcinogenic. To this purpose a radiochemical separation technique which includes extraction of Cr(VI) into tribenzylamine/chloroform and reextraction into alkaline solution has been improved. Without time-consuming precipitation of BaCrO4 the detection limit has been decreased by a factor of 1.7 compared to earlier, work (to values like 1 ppb) in samples of typically 35 mg by increase of decontamination of65Zn by a factor of up to 1000. Formation of65Zn(OH)2 is shown as the reason for this result. Yield determination was carried out by ICP-AAS-measurements and UV/VIS-spectroscopy. The accuracy of the radiochemical procedure has been proved by analysis of NBS-SRM 1577 Bovine Liver. |
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