| 改进铬天青S光度法测定饮用天然矿泉水中铝 |
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| 引用本文： | 叶耀东,刘振华,骆胜超.改进铬天青S光度法测定饮用天然矿泉水中铝[J].饮料工业,2009,12(6):38-40. |
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| 作者姓名： | 叶耀东 刘振华 骆胜超 |
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| 作者单位： | 1. 湖北省城市供水水质监测网孝感监测站,湖北孝感,432100
2. 清华大学深圳研究生院环境与检测中心,广东深圳,518055 |
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| 摘 要： | 采用分光光度法研究了铬天青S(CAS)-溴化十六烷基吡啶(CPB)-聚乙二醇辛基苯醚(OP)-铝(Al)四元络合物的显色反应,并确定了最佳试验条件.结果表明:显色反应在pH 7.0的HAc-NaAc缓冲溶液中进行,此时最大吸收波长位于630nm处,最佳显色时间为20min.回归方程为y=0.2235x+0.2549,相关系数r=0.9995,改进后的方法测定天然饮用矿泉水中铝的含量,相对标准偏差为3.36%～3.77%,回收率为99.2%～100.1%
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| 关 键 词： | 饮用天然矿泉水 铬天青S 分光光度法 改进 铝 |
Determination of aluminum in natural mineral water for drinking by modified chrome azurol S spectrophotometry |
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| YE Yao-dong,LIU Zhen-hua,LUO Sheng-chao.Determination of aluminum in natural mineral water for drinking by modified chrome azurol S spectrophotometry[J].Beverage Industry,2009,12(6):38-40. |
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| Authors: | YE Yao-dong LIU Zhen-hua LUO Sheng-chao |
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| Affiliation: | 1 Xiaogan Monitoring Station;City Drinking Water Quality Monitoring Net of Hubei Province;Xiaogan 432100;Hubei;China;2 Environment and Testing Center;Graduate School at Shenzhen;Qinghua University;Shenzhen 518055;Guangdong;China |
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| Abstract: | Based on the chrome azurol S spectrophotometry,the determination of aluminum in natural mineral water for drinking by ultraviolet spectrophotometry was studied.The results showed that the chrome azurol S dosage was the most essential factor and the 4-complex compound's maximum characteristic absorption in the buffer solution of HAc-NaAc(pH 7.0) was at 630 nm wavelength,and the optimum chromogenic time was 20 min.The linear regression equation was y = 0.2235x + 0.2549 and the correlation coefficient was 0.99... |
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| Keywords: | natural mineral water for drinking chrome azurol S spectrophotometry modification aluminum |
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