N-十一烷基-N’-(对氨基苯磺酸钠)硫脲光度法测定微量钯(Ⅱ)  

Spectrophotometric determination of Micro Palladium(Ⅱ)withN-Undecyl-N'-(sodium p-aminobenzenesulfonate) thiourea (UPT)

作　　者：夏东升[1] 崔凤灵[1] 马东兰[1] 李建平[1] 王玉炉[1] 

机构地区：[1]河南师范大学化学系,新乡453002

出　　处：《冶金分析》1999年第1期9-12,共4页Metallurgical Analysis

摘　　要：研究了Ｎ－十一烷基－Ｎ’－（对氨基苯磺酸钠）硫脲（ＵＰＴ）与钯（Ⅱ）反应条件。试验表明：在ｐＨ５．２￣５．６的ＨＡｃ－ＮａＡｃ介质中，在溴化十六烷基三甲基铵（ＣＴＭＡＢ）存在下，试剂ＵＰＴ与钯（Ⅱ）形成稳定的淡土黄色络合物，其最大吸收λｍａｘ＝２９６．４ｎｍ，，表观摩尔吸光系数ε＝７．９８×１０＾４。钯（Ⅱ）浓度在１￣１３μｇ／２５ｍＬ范围内符合比尔定律，相关系数ｒ＝０．９９８９。方法简便、快速，The condition of a reaction of Pd (Ⅱ) with the new reagent N-under-N'-(sodium p-aminobenzenesulfonate) thioim (UPT) was studied by spatrophototriry. In the odium of HAc-NaAc(pH5.2-5.6) a stable wilowish complex of Pd (Ⅱ)-UPT formed in the presence of cetylrimethyl ameniuzn bromide (CTMAB). This complex has a maximumabothence at 296.4um with an apparmt molar aborptivity of Boor's law is obeyed in the range of1-13ug/25mL for Pd(Ⅱ). The prope odhod has ho ed for the detendnation of thecro amounts of palladium in the catalpt and oas with satisfactory adults.

关 键 词：对氨基苯磺酸钠 硫脲 分光光度法 钯 微量分析 

分 类 号：O614.823[理学—无机化学]