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- MUROZUMI Masayo
- Department of Applied Chemistry, Muroran Institute of Technology
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- NAKAMURA Seiji
- Department of Applied Chemistry, Muroran Institute of Technology
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- KATO Takunori
- Department of Applied Chemistry, Muroran Institute of Technology
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- IGARASHI Tatsushi
- Department of Applied Chemistry, Muroran Institute of Technology
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- TSUBOTA Hiroyuki
- Ocean Research Institute, The University of Tokyo
Bibliographic Information
- Other Title
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- 同位体希釈‐表面電離質量分析法によるカドミウムの定量
Abstract
A minute amount of cadmium can be determined by the isotope dilution method with surface emission mass spectrometry using 116Cd as a spike. After extracted into 15 ml of 0.00125% dithizone chloroform solution from the sample spiked with 116Cd, cadmium is back extracted into 5 ml of 7 N nitric acid. The nitric acid solution is treated with 0.1 ml of 60% perchloric acid and dried up in a heated pyrex glass oven supplied with a high purity nitrogen gas. The residue is dissolved in a mixture of 60 μl of 0.003% silica gel suspended water and 5 μl of 2% phosphoric acid. An aliquot of the dissolved solution is loaded onto the center of a rhenium single filament in a surface ionization device of the mass spectrometer. The present method can determine the ratio of 114Cd/116Cd with the precision from 0.4 to 1.1% in coefficient of variation, where the detection limit for Cd+ ion is 10-14∼10-18 g. The application of the present method to orchard leaves delivered by National Bureau of Standards, U. S. A., as a standard reference material in environments has proved its superior usefulness by giving results in close agreement with those certified by N. B. S.
Journal
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- NIPPON KAGAKU KAISHI
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NIPPON KAGAKU KAISHI 1978 (2), 226-231, 1978
The Chemical Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204417970816
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- NII Article ID
- 130004059860
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- ISSN
- 21850925
- 03694577
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed