| Quantitative extraction of methylgermanium species at trace levels and determination by on-column capillary gas chromatography with flame photometric detector |
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| 作者姓名： | Jiang Guibin Zhang Yu |
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| 作者单位： | Research center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China,Beijing College of Acupuncture and Orthopedics,Beijing 100015,China |
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| 摘 要： | A solvent extraction procedure for the quantitativeextraction of trace levels of methylgermanium species as theirchloride complex has been developed and the extract was determinedby an on-column capillary gas chromatography with a lab-modifiedflame phorometric detector(FPD) using quartz surface-inducedgermanium emission after pentylation with Grignard reaction. Theextracted percentages for TMGe, DMGe and MMGe in a 100-ml 9mol/LHCl aqueous solution by a single extraction with 1 ml hexane are86.6%, 87.4% and 96.2%, respectively. The precision for overallprocedure range from 3.9% to 7.5%. The extraction was found to beindependent of the initial concentration of methylgermanium speciesin the aqueous phase, which typically varied from 0.1 to 10 μg. This method is suitable for most types of environmental samples and, are superior to all hydride generation coupled spectrometric andspectrophotometric methods in terms of selectivity and toleranceability to interference.
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| 关 键 词： | solvent extraction methylgermanium GC-FPD |
| 收稿时间： | 5/8/1997 12:00:00 AM |
| 修稿时间： | 6/3/1997 12:00:00 AM |
Quantitative extraction of methylgermanium species at trace levels and determination by on-column capillary gas chromatography with flame photometric detector |
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| Jiang Guibin,Zhang Yu.Quantitative extraction of methylgermanium species at trace levels and determination by on-column capillary gas chromatography with flame photometric detector[J].Journal of Environmental Sciences,1998,10(2):159-168. |
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| Authors: | Jiang Guibin Zhang Yu |
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| Abstract: | --A solvent extraction procedure
for the quantitative |
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| Keywords: | solvent extraction methylgermanium GC-FPD |
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