摘要
研究邻硝基苯基荧光酮（Ｏ—ＮＰＦ） —溴代十六烷基三甲铵（ＣＴＭＡＢ） —铅（Ｐｂ） 体系测定微量铅。研究表明，该方法灵敏度高，稳定性好，测定简便快速，其表观摩尔吸光系数为２－１３·１０５ Ｌ·ｍｏｌ－ １·ｃｍ － １ ，比耳定律适用范围为０ ～２５ μｇ／５０ ｍ Ｌ，适用于食品、污水中微量铅的测定。
Trace element lead which reacts with orthonitrobenzfluorenone in the presence of cetyl trimethylammonium bromide was studied. The proposed method is proved to be sensitive, stable, rapid and convenient. The apparent molar absorbtivity is 2.13·10 5 L·mol -1 ·cm -1 . Beer's valid within the range of 0～25 μg/50 mL. The method is applicable the direct determination of lead in food and waste water.
出处
《安徽机电学院学报》
1999年第4期52-55,共4页
Journal of Anhui Institute of Mechanical and Electrical Engineering
关键词
光度法
测定
食品
铅
spectrum analysis
determination
food
lead
