| 分光光度法测定工业废水中的汞 |
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| 引用本文： | 赵桦萍,靳凤丹,白丽明.分光光度法测定工业废水中的汞[J].信阳师范学院学报(自然科学版),2012(2):233-235. |
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| 作者姓名： | 赵桦萍 靳凤丹 白丽明 |
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| 作者单位： | 齐齐哈尔大学化学与化学工程学院;燕山大学环境与化学工程学院 |
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| 基金项目： | 黑龙江省科技厅归国留学资助项目(LC201008) |
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| 摘 要： | 在β-环糊精和聚乙烯醇存在下,在盐酸介质中基于汞-硫氰酸盐-罗丹明B的显色反应,采用分光光度法测定汞.配合物的最大吸收波长为580 nm,表观摩尔吸光系数为4.97×105L.mol-1.cm-1,汞含量在0.03～0.4 mg/L范围内服从比尔定律,线性回归方程:A=0.092ρ+0.007 1,相关系数r=0.998 4.此方法已用于工业废水中微量汞的测定,结果令人满意.
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| 关 键 词： | 分光光度法 汞 β-环糊精 聚乙烯醇 硫氰酸钾 罗丹明B |
Spectrophotometric Determination of Mercurry in Industrial Sewage |
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| ZHAO Hua-ping,JIN Feng-dan,BAI Li-ming.Spectrophotometric Determination of Mercurry in Industrial Sewage[J].Journal of Xinyang Teachers College(Natural Science Edition),2012(2):233-235. |
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| Authors: | ZHAO Hua-ping JIN Feng-dan BAI Li-ming |
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| Institution: | 1(1.College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China; 2.College of Environmental and Chemical Engineering,Yanshan Univercity,Yanshan 066004,China) |
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| Abstract: | The spetrophotometry analytical method of mercurry was developed based on the colour reaction of Hg(Ⅱ)-SCN——RhB system in the presence of β-cyclodextrin and polyvinyl alcohol in the medium of hydroloric acid.The maximum absorbance is at 580 nm with apparent molar absorption of 4.97 × 105 L·mol-1·cm-1.The beer’s law is obeyed in the range of 0.03~0.4 mg/L.The regression equation of calibration is A=0.092ρ + 0.007 1 with a correlation coefficient 0.988 4.The proposed method was used to determine the trace mercurry in industrial sewage with satisfactory results. |
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| Keywords: | spectrophotometry mercurry β-cyclodextrin polyvinyl alcohol KSCN Rhodamine B |
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