| 碘酸钾—三溴偶氮氯膦催化光度法测定水样中的痕量锰 |
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| 引用本文： | 张爱超,董海桅.碘酸钾—三溴偶氮氯膦催化光度法测定水样中的痕量锰[J].干旱环境监测,2008,22(3):171-173. |
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| 作者姓名： | 张爱超 董海桅 |
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| 作者单位： | 1. 临沂市环境监测站,山东,临沂,276001
2. 临沂市环境保护科学研究所,山东,临沂,276004 |
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| 摘 要： | 研究了以氨三乙酸（NTA）作活化剂,在pH=4.74的HAc—NaAc缓冲溶液介质中,Mn（Ⅱ）催化碘酸钾氧化三溴偶氮氯膦的褪色反应。通过实验,确定了该反应体系的最佳条件,由此建立了一个测定痕量锰的新方法。本方法的检出限是2.3×10^-9g/ml,测定范围为0.0-100.0 mg/L。该法具有较好的选择性,用于环境水体试样中痕量锰的测定,结果令人满意。
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| 关 键 词： | 催化动力学光度法 三溴偶氮氯膦 锰 |
Study on the Determination of Trace Manganese(Ⅱ) in water Sample by TB-Chlorophosphonazo-KIO4 System |
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| ZHANG Ai-chao,DONG Hai-wei.Study on the Determination of Trace Manganese(Ⅱ) in water Sample by TB-Chlorophosphonazo-KIO4 System[J].Arid Environmental Monitoring,2008,22(3):171-173. |
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| Authors: | ZHANG Ai-chao DONG Hai-wei |
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| Institution: | ZHANG Ai - chao ,DONG Hai - wei ( 1. Linyi City Environmental Monitoring Station, Linyi Shandong 276001, China; 2. Linyi Acad- emy of Environmental Protection Sciences,Linyi Shandong 276004, China) |
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| Abstract: | A new catalytic spectrophotometric method for the determination of trace amount of manganese（ Ⅱ ） had been developed. The method was based on oxidation of TB - Chlorophosphonazo in HAc-NaAc medium in the presence of nitric tri - acetic acid act as activator. The optimum reaction conditions were studied. The detection limit of the method was 2.3 × 10^-9 g/ml. The linear ranges for the detemaination of Manganese（Ⅱ） were 0.0 - 100.0 mg/L. Satisfactory results were obtained for the determination of trace Manganese（Ⅱ ） in water sample in environment. |
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| Keywords: | Catalytic spectrophotmetry Manganese TB- Chlorophosphonszo |
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