| 氢化物发生-原子荧光法分析饮水中不同价态的无机砷 |
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| 引用本文： | 程晓天,张峰峰,高建国,张慧芳,陈红云,张振东.氢化物发生-原子荧光法分析饮水中不同价态的无机砷[J].中国地方病学杂志,2006,25(1):99-101. |
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| 作者姓名： | 程晓天 张峰峰 高建国 张慧芳 陈红云 张振东 |
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| 作者单位： | 041000,临汾,山西省地方病防治研究所检验中心 |
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| 摘 要： | 目的用氢化物发生-原子荧光法测定生活饮用水中不同价态的无机砷。方法用氢化物发生-原子荧光法,选择一个最佳分析酸度,使其既适合测总砷也适合测3价砷(As3 )。用总砷减去As3 计算出5价砷(As5 )。结果以2%的盐酸为反应介质,既可测定总砷,也可以测定As3 ,从而可计算出As5 。在分析As3 时,As5 的干扰可以降到最低。最低检出限为0.11ng/ml。结论该方法分析饮用水中总无机砷、As3 、As5 灵敏度高,稳定可靠,操作简单,适用于地方性砷中毒病区大量水样中不同价态的砷分析。
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| 关 键 词： | 砷 饮水 荧光光度测定法 |
| 收稿时间： | 2005-11-06 |
| 修稿时间： | 2005-11-06 |
Determination of arsenic of different valence state in drinking water |
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| CHENG Xiao-tian,ZHANG Feng-feng,GAO Jian-guo,ZHANG Hui-fang,CHEN Hong-yun,ZHANG Zhen-dong.Determination of arsenic of different valence state in drinking water[J].Chinese Jouranl of Endemiology,2006,25(1):99-101. |
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| Authors: | CHENG Xiao-tian ZHANG Feng-feng GAO Jian-guo ZHANG Hui-fang CHEN Hong-yun ZHANG Zhen-dong |
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| Affiliation: | Shanxi Institute for Prevention and Treatment of Endemic Disease, Linfen 041000, China |
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| Abstract: | Objective To establish a new method for determination of trivalent arsenic(As3 ),quinquevalent arsenic (As5 ) and total arsenic in drinking water by HG-AFS. Methods The suitable acidity for determining either As3 or total arsenic was chosen. The difference of content of As3 from total arsenic was the content of As5 . Results The content of As3 and total arsenic could be determined by HG-AFS when 2%Hydrochloric acid was used as an agent, therefore As5 could be calculated. When analyzing trivalent arsenic, the interference of quinquevalent arsenic could be minimized. The detectable threshold of arsenic was 0.11 ng/ml. Conclusions The new method for determining As3 , As5 and total arsenic in drinking water, sensitive,reliable and simple, is suitable to analyze samples of large quantity from endemic arsenism areas. |
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| Keywords: | Arsenic Drinking water Fluorophotometry |
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