铍-铬天青S-乳化剂OP三元络合物分光光度法测定锡石单矿物中微量铍云南省地质矿产局实验室范慰全陶祯燕本文介绍了Be-CAS-OP三元络合物在醋酸-醋酸钠缓冲体系中,有EDTA存在时,阴阳离子在限量范围内可以不经萃取面直接测定。对于铍含量在0.001%以上的样品,只需用数十毫克样品即可测定。其灵敏度比Be-CAS二元络合物要提高13倍。 Beryllium-Chrysanthemum S-emulsifier OP Ternary Complex Spectrophotometric Determination of Trace Beryllium in Cassiterite Single Minerals Laboratory of Yunnan Bureau of Geology and Mineral Resources Fan Fanquan Tao Zhenyan In this paper, Be-CAS-OP ternary complex In acetic acid - sodium acetate buffer system, the presence of EDTA, the anion and cation in the limited range can be directly measured without extraction. For beryllium content above 0.001% of the sample, just tens of milligrams of sample can be determined. Its sensitivity than Be-CAS binary complexes to be increased by 13 times.