| 流动注射分光光度法测定微量镉的研究 |
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| 引用本文： | 陈菊,赵书林.流动注射分光光度法测定微量镉的研究[J].广西科学,2000,7(2):122-124. |
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| 作者姓名： | 陈菊 赵书林 |
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| 作者单位： | 1. 柳州职业技术学院,柳州市荣军路东三巷137号,545005
2. 广西师范大学化学化工系,桂林市育才路3号,541004 |
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| 基金项目： | 广西教育厅科研项目，， |
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| 摘 要： | 研究在Ｔｒｉｔｏｎ Ｘ－１００存在下，以苯并噻唑重氮氨基偶氮苯（ＢＴＤＡＢ）为显色剂的流动注射分光光度法测定微量镉的新方法，用ｐＨ值９．５的硼砂－氢氧化钠缓冲溶液作载流，ＢＴＤＡＢ和ＴｒｉｔｏｎＸ－１００的混合液作试剂流，在５２０ｎｍ波长下测定镉。
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| 关 键 词： | 镉 流动注射分析 测定 分光光度法 BTDAB 显色剂 |
| 收稿时间： | 1999/12/7 0:00:00 |
Flow Injection Spectrophotometric for the Determination of Trace Cadmium |
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| Chen Ju and Zhao Shulin.Flow Injection Spectrophotometric for the Determination of Trace Cadmium[J].Guangxi Sciences,2000,7(2):122-124. |
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| Authors: | Chen Ju and Zhao Shulin |
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| Institution: | Liuzhou Vocational-Technical College, 137 East Sanxiang, Rongjunlu, Liuzhou, Guangxi, 545005, China and Liuzhou Vocational-Technical College, 137 East Sanxiang, Rongjunlu, Liuzhou, Guangxi, 545005, China |
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| Abstract: | A flow injection spectrophotometric for the determination of trace codmium was developed.This method used pH9.5 borax-sodium hydroxide buffer solution as the carrier flow, the mixed solution of benzothiazolydiazo-aminoazobenzene(BTDAB) and Triton X-100 as the reagent.Cadmium formed an orange-red complex with BTDAB, which was detected at 520 nm. The sampling frequency was 120 samples/hour. Beer''s law was obeyed by cadmium in the range from 0 mg/L to 0.6 mg/L. The detection limit was 2.0×10-8 g/ml. The proposed method was applied to the determination of trace cadmium in waste water with satisfactory results. |
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| Keywords: | cadmium flow injection analysis benzothiazolyldiazo aminoazobenzene spectrophotometry |
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