| 钯（Ⅱ）─对碘偶氮氯膦显色反应的研究及其应用 |
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| 引用本文： | 陈薇,王曙,杨敏思.钯（Ⅱ）─对碘偶氮氯膦显色反应的研究及其应用[J].四川理工学院学报(自然科学版),1994(1). |
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| 作者姓名： | 陈薇 王曙 杨敏思 |
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| 摘 要： | 本文研究了钯与对碘偶氮氯膦（以下简称ＣＰＡ—ＰＩ）的显色反应。在ｐＨ＝４．４的ＮＡｃ—ＮａＡｃ缓冲介质中把（Ⅱ）与显色剂生成１：２的蓝色配合物。在波长６５５ｎｍ处有一吸收峰。摩尔吸光系数。＝２．１５×１０４。把（Ⅱ）含量在０～１．０６μｇ／ｍｌ（即０—９，９×１０－６ｍｏｌ．１－１）范围内符合比耳定律。试验了近三十种共存离子的影响。结合离子交换分离法用于合金样品中微量钯的测定，方法简便，灵敏度较高。
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| 关 键 词： | 钯（Ⅱ） 对碘偶氮氯膦 分光光度法 |
A STUDY ON THE COLOUR REACTI0N OF Pd(Ⅱ)─p─IODOCHLOROPHOSPHONAZO AND ITS APPLICATION |
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| Student:Chen Wei.A STUDY ON THE COLOUR REACTI0N OF Pd(Ⅱ)─p─IODOCHLOROPHOSPHONAZO AND ITS APPLICATION[J].Journal of Sichuan University of Science & Engineering:Natural Science Editton,1994(1). |
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| Authors: | Student:Chen Wei |
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| Institution: | Student:Chen Wei(Dept.of Chemical Engineering)Tutors:Wang Shu(Dept.of Chemical Engineering)Yang Minsi(Dept.of Basic Courses) |
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| Abstract: | The colour reaction of Pd(Ⅱ) with p-Iodochlorophosphonazo(CPA-PI) is studied.It is shown that the blue coordination complex is formed in HAc-NaAc(pH=4.4) medium.Its absorption is located at 655nm.The molar absorptivity a655 is 2.15×104.Beer's I aw is odeyed in the rang of 0～1.06ug/ml(0～9.9×10-6mol.1-1) for pd(Ⅱ).The composition of the complex is pd(Ⅱ):CPA-PI=1:2.This method is applied to the determination of trace amounts of pd in alloy,and the result is satisfactory. |
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| Keywords: | palladium P-Iodochlorophosphonazo spectrophotometry |
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