共沈-グラファイト炉原子吸光法による尿中の全クロムの定量
書誌事項
- タイトル別名
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- 共沈‐グラファイト炉原子吸光法による尿中の全クロムの定量
- Determination of total chromium in human urine by graphite furnace atomic absorption spectrometry after coprecipitation treatment
- キョウチン グラファイトロ ゲンシ キュウコウホウ ニヨル ニョウチュウ ノ
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The ppb order of total chromium in human urine was determined by graphite furnace atomic absorption spectrometry after the following pretreatments. Water-soluble inorganic salts in human urine such as sodium chloride were removed by a coprecipitation method. Chromium (VI) which is not collected by the ferric hydroxide coprecipitation method was reduced to chromium(III) by L-ascorbic acid and was coprecipitated with ferric hydroxide at pH 10. After aging for 30 min, the precipitate was filtered with a 0.45μm millipore filter. Coprecipitated organic materials such as protein were digested with nitric acid-hydrogen peroxide for 90 min. Since the analytical line of chromium is 357.9 nm, correction of the background absorption by the coprecipitated inorganic salts was made by using a higher-brilliant thermal cathode type deuterium lamp instead of the conventional deuterium lamps even in the measurements in the visible region. The coefficient of variation was 0.97 % at 5 ppb chromium in synthetic urine (n=7) and 3.30 % in 24 h human urine (n=4). The ppb order of total chromium was determined for the urine of 8 people, and satisfactory results were obtained.
収録刊行物
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- 分析化学
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分析化学 29 (10), 680-685, 1980
公益社団法人 日本分析化学会
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詳細情報
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- CRID
- 1390282679029449344
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- NII論文ID
- 110002908085
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- NII書誌ID
- AN00222633
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- COI
- 1:CAS:528:DyaL3MXhslSk
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- NDL書誌ID
- 2196421
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- ISSN
- 05251931
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可