【摘要】 <正> 微量CN-和S^2-的测定,通常需要预分离以消除卤离子、SCN^-、S₂O₃^2-等以及CN^-和S^2-之间的相互干扰。因而,操作步骤冗长和费时间。离子色谱的出现给阴离子的分析带来突破,也使得CN^-和S^2-的快速分离和测定成为可能。迄今,已发表的离子色谱法测定CN^-和S^2-的文章不多。先后为DuVal,Dolzine,Pinschmidt和Koch报导的方法灵敏度都不高,为ppm数量级,而且仅测定CN^-。Bond和Rocklin提出了同时测定更多还原

【Abstract】 An improved method for simultaneous determination of trace quantity of cyanide and sulfide has been developed using ion chromatography with electrochemical detection. The detection limits for sulfide of 8. 90 ppb and cyanide of 0. 25 ppb have been achieved with linearity of response over the range 8. 90 to 500 ppb and 0. 25 to 500 ppb respectively. The resolution and detection limits described are better than those so far published. This method has been applied to analysis of wastewater.更多还原