多金属矿中微量BeO的测定

DETERMRNATION OF TRACE BeO IN PULYMETALLIC ORES

试验在ｐＨ１０．０～１１．０条件下，用络天青Ｓ（ＣＡＳ）和溴化十六烷基吡啶（ＣＰＢ）、Ｔｒｉｔｏｎｘ—１００与铍形成橙色四元络合物，其最大吸收波长为５０８ｎｍ，采用酒石酸、柠檬酸钠、ＥＤＴＡ、三乙醇胺等作为掩蔽剂，可消除多种共存离子的干扰直接测定多金属矿中微量氧化铍，本法灵敏度高（ε＝３．７５×１０４），稳定性及重现性较好，ＢｅＯ含量在０～８μｇ／５０ｍｌ符合比尔定律。

This paper introduces the direct method to determine trace BeO in poly metallic ores in this method the orange quatarnary complex.which has a maximum wave lenth ot absorption ot 508nm,is tormed by mixing,CAS,CPB,and tritonx-100 with Be at PH10.0 to 11.0 to elimilate the interference of coexrsting ions tarlaric and citric arid EDTA and triathyl hydroxyamine are used as masking agent.This method has a high sensitivity(ε=3.75×104) and stabrlity as a good reoccurence.The solution used in the test has a BeO content of 0 to 8μg/50ml.the bill's law is satisfied.