| 分光光度法测定环境水样中阳离子表面活性剂 |
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| 引用本文： | 沙鸥,丁军楠,李亚鑫.分光光度法测定环境水样中阳离子表面活性剂[J].日用化学工业,2012(4):303-305,309. |
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| 作者姓名： | 沙鸥 丁军楠 李亚鑫 |
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| 作者单位： | 淮海工学院化学工程学院;江苏省海洋资源开发研究院分析测试中心 |
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| 基金项目： | 2011年度江苏省海洋资源开发研究院科技开放基金立项资助项目(JSIMR11B26);淮海工学院2011年自然科学类校内资助课题(Z2011020) |
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| 摘 要： | 采用分光光度法对十六烷基三甲基溴化铵(CTAB)-Al(Ⅲ)-铬天青S(CAS)三元络合物体系进行了研究。研究发现,在pH=6.0的B-R缓冲液中,CTAB的加入导致Al(Ⅲ)-CAS二元络合体系的吸光度增加,并在640 nm波长处产生最大吸收。实验结果表明,当5.0×10-4mol.L-1的CAS溶液用量为1.00 mL,20μg·L-1的Al(Ⅲ)溶液用量为1.00 mL时,CTAB质量浓度(ρ)在5～100 mg·L-1范围内与体系吸光度(A)呈良好的线性关系,线性方程为A=0.223 41ρ-0.042 37,相关系数r=0.999 9。该法用于环境水样中CTAB的测定,加标回收率为97%～103%。
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| 关 键 词： | 十六烷基三甲基溴化铵 环境水样 分光光度法 |
Spectrophotometric determination of CTAB in waste water |
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| SHA Ou,DING Jun-nan,LI Ya-xin.Spectrophotometric determination of CTAB in waste water[J].China Surfactant Detergent & Cosmetics,2012(4):303-305,309. |
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| Authors: | SHA Ou DING Jun-nan LI Ya-xin |
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| Affiliation: | 1(1.School of Chemical Engineering,Huaihai Institute of Technology,Lianyungang,Jiangsu 222005,China; 2.Analysis and Test Center of Jiangsu Marine Resources Development Research Institute,Lianyungang,Jiangsu 222001,China) |
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| Abstract: | A new spectrophotometric method for detection of cetyltrimethylammonium bromide(CTAB) based upon formation of the Al(Ⅲ)-Chromeazurol S(CAS)-CTAB ternary complex system was studied.Results showed that in the medium of pH=6.0 Britton-Robinson buffer solutions,the color reaction of Al(Ⅲ) with CAS could be enhanced by adding CTAB.The maximum absorption wavelength of the ternary complex Al(Ⅲ)-CAS-CTAB was at 640 nm.When the amount of 5.0×10-4 mol·L-1 CAS and 20 μg·L-1 Al(Ⅲ) was 1.00 mL and 1.00 mL respectively,mass concentration of CTAB in the range of 5~100 mg·L-1 shows good linearity vs.the absorbance of the system.This developed method can be used for the determination of CTAB in waste water samples with satisfactory results.The spiked recovery rate is in the range of 97%~103%. |
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| Keywords: | cetyltrimethylammonium bromide waste water spectrophotometric method |
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