摘要
以含水量８０％的Ｏ／Ｗ型ＳＤＳ／正丁醇／正庚烷／水微乳液为介质，以５－Ｂｒ－ＰＡＤＡＰ为显色剂，分光光度测定Ｍｎ（Ⅱ）．表观摩尔吸光系数ε５７０＝１．０８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，与相同含水量的ＳＤＳ胶束体系相比，测定灵敏度有显著提高，改善了实验条件．方法用于铝合金和茶叶中Ｍｎ（Ⅱ）的测定。
The spectrophotometric determination of Mn(Ⅱ) was studied with 2 (5 bromo 2 pyridylazo) 5 diethylaminophenol in the sodium dodecyl Sulphate/n butanol/n heptane/water microemulsion medium( water content, 80%). The results show that the maximum absorption wavelenght is at 570nm, and the sensitivity in SDS/n C 4H 9OH/n C 7H 16 /H 2O O/W microemulsion medium is higher than that in SDS micelle medium. the molar absorptivity is 1.08×10 5L·mol -1 ·cm -1 . Beers law is obeyed in the concentration range of 0￣10μg/10mL. The method has been used for the rapid dietermination of trace Mn(Ⅱ) in aluminium alloy and tea.
出处
《分析科学学报》
CAS
CSCD
1996年第4期326-328,共3页
Journal of Analytical Science
关键词
锰
微乳液
Br-PADAP
Manganese, Microemulsion, 2 (5 Bromo 2 pyridylazo) 5 dethylamoinophenol
