琉基葡聚糖凝胶分离富集-1-(4-安替比林)-3-(2,4,6-三溴苯基)-三氮烯光度法测定痕量镍(Ⅱ)  

Spectrophotometric Determination of Trace Amounts of Nickel(Ⅱ) with 1-(4-Antipyrine)-3-(2,4,6-tribromophenyl)-Triazene as Chromogenic Reagent After Separation of Thioglucosan Gel Column

作　　者：陈文宾[1,2] 殷磊[2] 斯琴高娃[2] 马卫兴[2] 许兴友[2] 

机构地区：[1]淮海工学院江苏省海洋资源开发研究院,连云港222005 [2]淮海工学院化学工程学院,连云港222005

出　　处：《理化检验（化学分册）》2011年第10期1155-1158,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：教育部重点实验室开放基金资助项目(CPEUKF06-04);淮海工学院江苏海洋资源开发研究院基金资助项目;淮海工学院2011大学生实验室创新项目

摘　　要：合成并鉴定了一种新的三氮烯试剂1-(4-安替比林-)3-(2,4,6-三溴苯基)-三氮烯(ABPT),研究了该试剂与镍(Ⅱ)的显色反应条件。在pH 10.0的硼砂-氢氧化钠介质中,在Triton X-100存在下,ABPT与镍(Ⅱ)发生灵敏的显色反应。络合物的最大吸收波长为515nm,表观摩尔吸光率为2.1×105L.mol-1.cm-1。镍(Ⅱ)质量浓度在20.0～400μg.L-1之间呈线性,检出限(3s/k)为8μg.L-1,方法用于生活垃圾、水样品中痕量镍(Ⅱ)的测定,结果与原子吸收光谱法的测定结果相符,测定值的相对标准偏差(n=6)均小于5%,回收率在102.5%～105.0%之间。A new triazene reagent, 1-（4-antipyrine）-3-（2, 4, 6-tribromophenyl）-triazene （ABPT） was synthesized and characterized by elementary analysis and IR-speetrascopy. In a borax buffer of pH 10. 0 and in the presence of Triton X-100, a ternary complex was formed among Ni（ Ⅱ ）, ABPT and Triton X-100, having its absorption maximum at 515 nm, and molar absorptivity of 2. 1 × 10^5L ·mol^-1 · cm^-1. Linearity range of Ni（ Ⅱ ） was kept from 20. 0 to 400 μg · L^-1 , with value of detection limit （3s/k） of 8 μg · L^-1. Samples of domestic gabbage and water were analyzed by the proposed method, giving results in consistency with those found by AAS, and values of RSD＇s （n=6） found were less than 5%. Values of recovery found were in the range of 102. 5% to 105.0%.

关 键 词：分光光度法 1-(4-安替比林)-3-(2 4 6-三溴苯基)-三氮烯 镍(Ⅱ) 

分 类 号：O657.32[理学—分析化学]