【摘要】 <正> 本文在前人工作的基础上,研究了:第一,汞离子用量的适宜范围;第二,共存离子干扰限度与Hg²⁺用量的关系;第三,静止溶出可达到的灵敏度。更多还原

【Abstract】 Potentiometric stripping analysis（P.S.A.）at a stationary electrode is one of the technique enhancing the sensitivity of P.S.A. The experiments show that when the mole ratio〔Hg²⁺〕/〔Mⁿ⁺〕is greater than n×10, this method holds good. The tolerable concentration of interference ions is directly proportional to the concentration of Hg²⁺used. The higher the conentration of interference ions is, the higher the concentration of Hg²⁺should be needed. For examples Of Bi³⁺, Cd²⁺, Pb²⁺, Cu²⁺, etc., a comparison of the sensitivity of P.S.A. at a stationary electrode and normal P.S.A. has been made. Using P.S.A. at stationary electrode Cu²⁺in wastewater and Cu²⁺and Pb²⁺in cotton are successfully determined.更多还原