摘要
本文研究了１－（２－羟基－３－甲氧基苯甲醛缩氨基）－８－羟基－３－，６－萘二磺酸的合成以及光度测定硼的方法。在乙酸－乙酸铁缓冲溶液中，硼与成剂形成１：２的黄色络合物，最大吸收波长在４２０ｎｍ处，摩尔吸光系数为７．１９×１０￣３Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），Ｂ的Ｓａｎｄｅｌｌ灵敏度为０．００１５μｇ／ｃｍ￣２：。当硼量在０～３５μｇ／２５ｍｌ范围内符合比尔定律，应用于氧化镁中硼的测定获得满意结果。
In this paper，the synthesis of 1-（2-hydroxy-3-methoxybenzyllndene-amino）-8-hydroxy-naphthalemε-3,6－disulphonic acid is reported and its reaction with B has been studied．In a NH_4Ac-HAcbuffer medium of pH 5．7， B reacts with the reagent to forma 1：2 yellow complex having a maximumabsorption at 420 nm.Its molar absorptivity being 7．19×10~3 L· mol^(-1)·cm^(-1), Sandell'S sensitivity being0．0015μg／cm^2． Beer'S law is obeyed for0-35μg B in 25 ml．This method has been applied to the deter-mination of B in magnesium oxide.
出处
《冶金分析》
CAS
CSCD
北大核心
1994年第2期1-3,共3页
Metallurgical Analysis
关键词
硼
比色法
测定
: 1-（2－Hydroxy-3-methoxybenzylindene-amino ）-8-hyoxynaphthalene-3，6-disulponic acid,Boron，Spectrophotometry
