离子选择电极法测定金属硒及硒碲合金中氯的研究

Determination of chlorion in selenium and selenium-tellurium alloy with ion selective electrode

用氯离子选择电极以多次标准添加作图法测定金属硒、硒碲合金中的微量氯离子，对于大量硒、碲对测定的干扰，可用氟离子络合掩蔽消除．该法简单、快速，测定的相对标准偏差小于８％，加料回收率为９６％～１０４％，可测定氯离子的下限为０．００１％．

Micro chlorion in selenium and selenium-tellurium alloy has been determined by standard addition method with a chlorion selective electrode. The interference of selenium and tellurium in a large quantity can be eliminated by fluorion complexing. The proposed method is simple and fast, with a relative standard deviation less than 8% and standard addi- tion recoveries of 96%~104%. This method can determine chlorion in a quantity as low as 0. 001 %.