| 流动注射化学发光法测定土壤中的微量铬 |
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| 引用本文： | 高向阳,潘清梅,何方,呼世斌.流动注射化学发光法测定土壤中的微量铬[J].环境科学,1991,12(3):54-58. |
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| 作者姓名： | 高向阳 潘清梅 何方 呼世斌 |
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| 作者单位： | 河南农业大学
(高向阳,潘清梅,何方),西北农业大学(呼世斌) |
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| 摘 要： | 在聚四氟乙烯压力釜中用混酸恒温溶样,防止了样品的污染和挥发损失.用1-(2-吡啶偶氮)-2-萘酚(PAN)有效地消除了Co~(2+)的干扰,提高了分析的选择性.该法数秒钟即可测定一次试液,适用于批量样品的测定、检出限为6.2×10~(-13)g/ml,多次加标回收率在94.3～105.7％之间,RSD<3％,分析结果令人满意.
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| 关 键 词： | 土壤监测 铬 化学发光法 流动注射 |
Determination of Trace Chromium in Soil with Flowing Injection Chemiluminescence Analysis |
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| Gao Xiang-yang and Hu Shi-bin.Determination of Trace Chromium in Soil with Flowing Injection Chemiluminescence Analysis[J].Chinese Journal of Environmental Science,1991,12(3):54-58. |
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| Authors: | Gao Xiang-yang and Hu Shi-bin |
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| Institution: | Henan Agricultural University, Zhenzhou;Henan Agricultural University, Zhenzhou;Henan Agricultural University, Zhenzhou;Northeast Agricultural University, Yangling Town, Sha-anxi Province |
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| Abstract: | The paper presents flowing injection chemilumines-cence analysis of trace chromium in soil. The method is rapid, sensitive and accurate after the samples are dissolved with mixed acid in a closed teflon vessel under pressure. Most of common ions do" not interfere with the determination of chromium, and interference from cobalt may be eliminated by addition of PAN masking agent in solution of pH 4. The detection limit of trivalent chromium is 6.2×10-13g/ml.The relative standard deviation is less than 3%(n=3 or 4). The recovery rate is 94.3-105.7%. |
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| Keywords: | trace chromium in soil determina-tion flowing injection chemiluminescence analysis |
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