用发射光谱分析法检测微量贵金属  

Microanalysis of Precious Metals with Atomic Emission Spectrometry

作　　者：徐慧[1,2,3] 王继林[1,2,3] 王国彦 刘美华[1,2,3] 鲁保银 王卫国 冯文安[1,2,3] 

机构地区：[1]云南大学实验中心 [2]云南大学地球科学系 [3]云南省地质矿产局测试中心

出　　处：《光谱实验室》1999年第3期324-328,共5页Chinese Journal of Spectroscopy Laboratory

摘　　要：Ｐｔ、Ｐｄ、Ｒｈ、Ａｕ能溶于王水及盐酸加双氧水中，而Ｒｈ溶于热硫酸或浓盐酸加氯酸钙，试验中可用王水溶矿，在王水或盐酸介质和氯化亚锡存在下用负载二苯基硫脲的混合碳粉富集痕量的Ｐｔ（Ⅱ）、Ｐｄ（Ⅱ）、Ｒｈ（Ⅰ）、Ａｕ（Ⅲ）络合物。吸附载体灰化后用发射光谱测定，测定的绝对灵敏度为Ｐｔ、Ｐｄ、Ｒｈ、Ａｕ０．０１×１０－６，以１０ｇ样品计算，测定灵敏度达到了１×１０－９。Pt,Pd,Rh,Au can be dissolved in aqua regia and hydrochloric acid added with hydrogen peroxide.In Experiment,we use the minerals which dissolved in aqua regia.The trace Pt() Pd() Rh() and Au() were loaded by the mixed carbon powder which carried diphenyl thiourea when aqua regia or hydrochloric acid and stannous chlorids as media are present.Loader adsorbed precious metals was ashed and determined with atomic emission spectrometry.The absolute sensitivity of Pt,Pd,Rh and Au are 0.0110-6.The determination sensitivity counted with 10 grams of samples is 110-9.

关 键 词：铂 钯 钯 铑 金 发射光谱法 二苯基硫脲 测定 

分 类 号：O614.823[理学—无机化学] O614.123[理学—化学]