论文部分内容阅读
本文研究了在十二烷基硫酸钠(SDS)存在下,钯(Ⅱ)与α,β,γ,δ-四(4-吡啶)卟啉(TPyrP)的显色反应。提出了一个高灵敏度测定钯的分光光度法。Pd(Ⅱ)-TPyrP-SDS三元配合物的最大吸收波长在444nm处,摩尔吸光系数ε=3.5×10~5L/molcm。该配合物中Pd(Ⅱ):TPyrP=1:1。许多常见离子的允许量较大,故本法选择性好。可以直接用于混合试样及含钯的高分子催化剂中钯的测定,均获得满意的结果。
In this paper, the color reaction of palladium (Ⅱ) with α, β, γ, δ-tetrakis (4-pyridyl) porphyrin (TPyrP) was studied in the presence of sodium dodecyl sulfate (SDS) A high sensitivity spectrophotometric method for the determination of palladium was proposed. The maximum absorption wavelength of Pd (Ⅱ) -TPyrP-SDS ternary complex is at 444nm, and the molar absorptivity ε = 3.5 × 10 ~ 5L / molcm. The complex Pd (Ⅱ): TPyrP = 1: 1. The allowable amount of many common ions, so the selectivity of the law is good. It can be directly used for the determination of palladium in the mixed samples and the palladium-containing polymer catalysts, and satisfactory results are obtained.