本文提出以盐酸氨基脲作释放剂，选择性螯合滴定法测定铅铊合金、铊化物和硫酸铊中的铊含量。
The thallium content in Al Tl alloys, thallides and thallium sulfate are selectively determined by chelatometry with aminourea hydrochloride used as the reasling agent.
本文研究了硫酸钡在氨水溶液中与EDTA的反应条件，提出用EDTA滴定法测定三硝基间苯二酚中的硫酸。
This Paper studies the reaction conditions of the Barium Sulphate and EDTA in ammonia water solution and proposes to use EDTA titration to determine sulphuric acid in Trinitro-resorcinol.
用EDTA滴定法检测硫酸盐，钡镁混合液的加入量是否适当，直接影响到检测的精确度。
Testing the content of sulphate with EDTA titration method can directly influence its precision because whether the capacity of barium mixed liquid of magnesium is added suitably.
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