【摘要】 <正> 邻苯二胺是常用的测定硒的络合剂,Ariyoshi等人曾以邻苯二胺为络合剂用紫外光谱法测定微量硒,侯家麟等用相同的方法测定了亚硒酸钠片中硒的含量,其原理是:邻苯二胺与亚硒酸发生络合反应生成3,4-苯并-1,2,5-重氮苤硒脑,再以甲苯萃取,用光度法测定萃取液。我们试用超声波作用使络合和萃取一步完成,该方法尚未见文献报道。更多还原

【Abstract】 This paper reports that under ultrasonic wave complexing and extraction of Se-o-phenylene-diamine were finished simultaneously. With the aid of determination of ABS of toluene extracting liquid, the content of Se was determined. The best condition was the action of ultrasonic wave on the sample for 20-35 min. The average recovery was 98. 2-98. 3%. The pH range was 1. 7--1. 9.更多还原