| 浊点萃取-比值导数光度法同时测定水中孔雀石绿和结晶紫 |
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| 引用本文： | 李秋,李贵荣,刘长鹤,韩倩.浊点萃取-比值导数光度法同时测定水中孔雀石绿和结晶紫[J].陕西化工,2014(4):755-758. |
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| 作者姓名： | 李秋 李贵荣 刘长鹤 韩倩 |
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| 作者单位： | 南华大学公共卫生学院,湖南衡阳421001 |
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| 摘 要： | 建立一种浊点萃取-比值导数光度法同时测定水样中孔雀石绿和结晶紫,测量波长分别为639,476 nm,线性范围都是1.0×10^-8-1.0×10^-6mol/L,检测限分别是3.93×10^-9,4.96×10^-9mol/L。相对标准偏差分别小于4.08%和4.31%。该方法应用于测定水样中痕量孔雀石绿和结晶紫,结果令人满意。
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| 关 键 词： | 浊点萃取 比值导数分光光度法 孔雀石绿 结晶紫 |
Determination of malachite green and crystal violet by spectrophotometry using derivative ratio spectrum method after cloud point extraction |
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| LI Qiu,LI Gui-rong,LIU Chang-he,HAN Qian.Determination of malachite green and crystal violet by spectrophotometry using derivative ratio spectrum method after cloud point extraction[J].Applied Chemical Industry,2014(4):755-758. |
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| Authors: | LI Qiu LI Gui-rong LIU Chang-he HAN Qian |
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| Affiliation: | (College of Public Health, University of South China, Hengyang 421001, China) |
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| Abstract: | A new method for the simultaneous determination of trace amount of malachite green and crystal violet from aqueous solution by spectrophotometry after cloud point extraction using derivative ratio spectrophotometry has been proposed. The wavelength of absorption of malachite green and crystal violet is 639,476 nm. Linearity was obeyed in the range of 1. 0 × 10^- 8~ 1. 0 × 10^- 6mol / L with limit of detection of 3. 93 × 10^- 9mol / L and 4. 96 × 10^- 9mol / L,respectively. The relative standard deviation was less than 4. 08% and 4. 31%,respectively. The method was applied to the simultaneous determination of malachite green and crystal violet in water samples with satisfactory results. |
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| Keywords: | cloud-point extraction derivative ratio spectrophotometry malachite green crystal violet |
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