分光光度法测定dl─HMPAO冻干药盒中微量Sn（Ⅱ）  

SPECTROPHOTOMETRIC DETERMINATION OF MICROAMOUNTS OF Sn(Ⅱ) IN dl HMPAO KIT

作　　者：叶肇云[1] 杨群[1] 

机构地区：[1]中国原子能科学研究院

出　　处：《同位素》1996年第2期76-80,共5页Journal of Isotopes

摘　　要：采用分光光度法及Ｓｎ（Ⅱ）－Ｆｅ（Ⅲ）－邻二氮菲（Ｐｈｅｎ）体系测定ｄｌ－ＨＭＰＡＯ冻干药盒中微量Ｓｎ（Ⅱ）。在ｐＨ≈５的酸度下，Ｓｎ（Ⅱ）还原Ｆｅ（Ⅲ）生成红色的Ｆｅ（Ⅱ）－Ｐｈｅｎ配合物。该配合物的最大吸收波长λｍａｘ＝５１０ｎｍ，计算得到表观摩尔吸光系数为２．０×１０４ｌ·ｍｏｌ－１·ｃｍ－１。Ｓｎ（Ⅱ）浓度在０－２．５μｇ／ｍｌ内符合比尔定律。A spectrophotometric determination of microamounts of Sn(Ⅱ) in dl HMPAO kit is described, with ferric chloride hexahydrate 1, 10 phenanthroline as chromogenic reagent is studied. The complex is formed at pH 5, the apparent molar absorptivity is 2.0×10 4 l·mol -1 ·cm -1 at 510 nm. Beers law is obeyed in the range of 0-2.5 μg/ml for Sn(Ⅱ).

关 键 词：脑血灌注显像剂 分光光度法 冻干药盒 锡(II) 

分 类 号：R814.43[医药卫生—影像医学与核医学] R981[医药卫生—放射医学]