| Cu（Ⅱ）-铍试剂Ⅲ-吐温-80三元体系分光光度法测定铜 |
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| 引用本文： | 程志刚,徐国想,张成燕,陈文宾.Cu（Ⅱ）-铍试剂Ⅲ-吐温-80三元体系分光光度法测定铜[J].淮海工学院学报,2009,18(2):47-49. |
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| 作者姓名： | 程志刚 徐国想 张成燕 陈文宾 |
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| 作者单位： | 程志刚,CHENG Zhi-gang(连云港市自来水公司,江苏,连云港,222003);徐国想,张成燕,陈文宾,XU Guo-xiang,ZHAN Cheng-yan,CHEN Wen-bin(淮海工学院化学工程学院,江苏,连云港,222005)
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| 基金项目： | 江苏省教育厅高校自然科学研究指导性计划项目 |
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| 摘 要： | 在吐温-80存在下,研究了铜（Ⅱ）与铍试剂Ⅲ的显色反应条件,建立了分光光度法测定微量铜的新方法。实验表明,在pH=9.07硼砂-盐酸缓冲溶液中,络合物的最大吸收峰位于564 nm波长处,表观摩尔吸光系数ε为1.35×10^5L/（mol.cm）,检出限为0.02μg/mL。10 mL显色液中铜（Ⅱ）在0.06-3.2μg范围内符合比尔定律。该方法可用于铝合金和水样中铜（Ⅱ）的测定,回收率在98.4%-104.6%之间,RSD在1.03%-5.20%范围内。
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| 关 键 词： | 铍试剂Ⅲ 分光光度法 铜(Ⅱ) |
Spectrophotometric Determination of Copper with Beryllon Tween-80 Ternary System |
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| CHENG Zhi-gang,XU Guo-xiang,ZHAN Cheng-yan,CHEN Wen-bin.Spectrophotometric Determination of Copper with Beryllon Tween-80 Ternary System[J].Journal of Huaihai Institute of Technology:Natural Sciences Edition,2009,18(2):47-49. |
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| Authors: | CHENG Zhi-gang XU Guo-xiang ZHAN Cheng-yan CHEN Wen-bin |
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| Affiliation: | 1.Lianyungang Water Supply Company;Lianyungang 222003;China;2.School of Chemical Engineering;Huaihai Institute of Technology;Lianyungang 222005;China |
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| Abstract: | The conditions of color reaction of Cu（Ⅱ） with Berryllon m in the presence of Tween- 80 are obtained and a new spectrophotometrie method for the determination of micro Cu（Ⅱ） is found. Research results show that in the buffer solution （pH= 9.07 ） of Na2B4 O7-HCl, the maxi- mum absorption peak stands at 564 nm and apparent molar absorption coefficient is 1.35×10^5 L/ （mol·cm）. Lambert-Beer law is applicable within the range of 0.06-3.2 μg for Cu（Ⅱ） in 10 mL colored solution. The detection limit is 0.02 μg/10 mL. This method can be used to deter- mine and trace Cu（ Ⅱ ） in aluminium alloy and water. The RSD and recovery rate are 1.03 %--5. 20% and 98.4%--104.6% respectively. |
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| Keywords: | Berryllon Ⅲ spectrophotometry Cu（Ⅱ） |
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