摘要
以3,3′-二氨基联苯胺为显色剂,研究了分光光度法测定有机物中的微量元素硒。对掩蔽剂EDTA的加入量、显色反应时间、络合酸度以及萃取酸度进行了研究。最后以络合物的稳定性,回收率等指标论证了该方法的可行性。该分析方法非常适合日常分析。
Using 3,3 ＇-diaminobenzidine （ DAB ） as selenium organic reagent, the author studied the determination of selenium by spectmphotometry . The addition of screening agent ethylenediamine teraacetic acid disodium salt （EDTA-2Na） , time of reaction, acidity of complex reaction and extraction were optimized： The stability of Se-DAB complex and rate of recovery were used to evaluate the practicability of this method. According to the results of the determination, we can draw a conclusion that the Sedetermination method described here is suitable for daily analysis.
出处
《食品与机械》
CSCD
北大核心
2007年第1期115-117,147,共4页
Food and Machinery
关键词
硒
分光光度法
3
3'-二氨基联苯胺
Selenium
Spectrophotometery
3, 3＇-diaminobenzidine （ DAB ）
