| 用Cr(V1)-H_2O_2-ECR-CTMAB体系分光光度法测定铬鞣液中的铬 |
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| 引用本文： | 张岭华,张克让,虎玉森,肖雯. 用Cr(V1)-H_2O_2-ECR-CTMAB体系分光光度法测定铬鞣液中的铬[J]. 甘肃农业大学学报, 1992, 0(2) |
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| 作者姓名： | 张岭华 张克让 虎玉森 肖雯 |
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| 作者单位： | 甘肃农业大学基础部，甘肃农业大学基础部，甘肃农业大学基础部，甘肃农业大学基础部 |
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| 摘 要： | 作者研究了Cr(VI)—H_2O_2—ECR—CTMAB显色体系的光度特性。在pH3.4～4.4范围内,在CTMAB和CH_3CH_2OH存在下,λ_(max)=600nm,ε=1.1×10~5L·mo1~(-1)·cm~(-1),配合比为Cr(Ⅵ):H_2O_2:ECR=1:1:3,0～20μgCr/50ml范围内服从比尔定律。本法不经分离直接测定铬鞣液中的铬,获得满意结果。
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| 关 键 词： | 铬 分光光度法 Cr(Ⅵ)—H_2O_2—ECR—CTMAB体系 |
Spectrophotometric Determination of Chromium in Tanning Liquor Using Cr (VI)-H_2O_2-ECR-CTMAB System of Colour Reaction |
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| Zhang Linghua,Zhang Kerang,Hu Yusen,Xiao Wen. Spectrophotometric Determination of Chromium in Tanning Liquor Using Cr (VI)-H_2O_2-ECR-CTMAB System of Colour Reaction[J]. Journal of Gansu Agricultural University, 1992, 0(2) |
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| Authors: | Zhang Linghua Zhang Kerang Hu Yusen Xiao Wen |
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| Affiliation: | Zhang Linghua,Zhang Kerang,Hu Yusen,Xiao Wen Department of Basic Courses,Gansv Agricultural University |
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| Abstract: | The spectrophotometric properties of Cr(VI)-H_2O_2-ECR- CTMAB colour system were studied in this paper. The results indicated that the molar absorptivity coefficient was 1.1×10~5 L·mol~(-1)·cm~(-l) and the Cr(VI): H_2O_2: ECR ratio was equal to 1:1:3 at λmax=600nm and pH=3.4～4.4 when CTMAB and CH_3CH_2OH existed, the Beer's Iaw being obeyed in the concentration range of o to 20μg Cr(VI)/50ml. This method is proved to be satisfactory for the direct determination of trace amount of chromium in tanning liquor |
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| Keywords: | chromium spectrophotometry Cr (VI)--H_2O_2--ECR--CT-MAB system |
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