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题名: 三波长分光光度法同时测定痕量镉镍
其他题名: Simultaneous determination of cadmium(II) and nickel (II) by triwavelength spectrophotometry
作者: 刘永文; 宋金萍; 孟双明; 郭永; 常希俊
收录类别: EI ; CSCD
出版日期: 2006-12-15
刊名: 冶金分析
卷号: 26, 期号:6, 页码:14-16
期刊主办单位: 钢铁研究总院
出版者: Central Iron and Steel Research Institute
出版地: BEIJING
中文摘要: 研究了三波长分光光度法同时测定Cd2+与Ni2+的条件。结果表明:在TritonX-100表面活性剂存在下,pH 11.0的Na2B4O7-NaOH缓冲溶液中,Cd2+,Ni2+与3,3’-二磺酸基联苯胺基重氮氨基偶氮苯(DSDPDAA)形成稳定的红色络合物,络合物的表观摩尔吸光系数分别为6.83×104L.mol-1.cm-1和8.93×104L.mol-1.cm-1;25 mL溶液中Cd2+和Ni2+分别在0-15μg和0-14μg范围内符合比尔定律,据此建立了三波长分光光度法同时测定Cd2+与Ni2+的新方法。对25 mL溶液中5μg Cd2+和Ni2+,测定的相对标准偏差分别为1.6%...
英文摘要: The conditions of determining cadmium(II) and nickel(II) by triwavelength spectrophotometry have been studied. The results show that in the presence of surfactant TritonX-100 and in the medium of Na2B4O7 - NaOH buffer solution (pH 11.0), 3, 3-disulphobiphenylaminodiazoaminoazobenze(DSDPDAA) reacts with cadmium(II) and nickel(II) to form stable red complex with the apparent molar absorptivity of 6.83 × 104 L·mol-1 ·cm-1 and 8.93 × 104 L·mo-1 ·cm-1 respectively. Beer's law is obeyed in the range of 0 - 15 μg and 0 - 14 μg in 25 mL solution for cadmium and nickel, respectively. Based on this, a novel method for the simultaneous determination of cadmium(II) and nickel(II) by triwavelength spectrophotometry is developed. The relative standard deviations are 1.6% and 2.4% (n = 11) for 5 μg of cadmium (II) or nickel(II). The method has been applied to the determination of cadmium(II) and nickel(II) in soil and hair certified reference samples, and the results are found to be agreement with the certified values.
关键词: 三波长分光光度法 ; 3,3’-二磺酸基联苯胺基重氮氨基偶氮苯 ; ;
作者部门: 雁北师范学院化学系 ; 大同医学专科学校基础部 ; 雁北师范学院化学系 ; 雁北师范学院化学系 ; 兰州大学化学化工学院 山西大同037009 ; 山西大同037018 ; 山西大同037009 ; 山西大同037009 ; 甘肃兰州730000
通讯作者: Liu, Y.-W.
文章类型: Article
所属项目编号: 山西省自然科学基金资助项目(0505013)
语种: 中文
ISSN号: 1000-7571
CSCD记录号: CSCD:2644834
EI记录号: 20071010471631
IR记录号: CNKI:0027312
第一机构:
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/100607
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
刘永文,宋金萍,孟双明,等. 三波长分光光度法同时测定痕量镉镍[J]. 冶金分析/Yejin Fenxi/Metallurgical Analysis,2006,26(6):14-16.
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