应用间溴偶氮羧──m光度法测定碳酸盐岩石及粮食中的铝

SPECTROPHOTOMETRIC DETERMINATION OF ALUMINIUM IN CARBONATE ROCKAND GRAIN WITH METABROMOCARBOXYAZO-m

本文提出了用碳酸钠和氢氧化钠熔矿，在熔矿、提取过程中分离钙、镁、铁、锰等绝大部分干扰元素，应用间溴偶氮羧—ｍ作显色剂测定碳酸盐岩石及粮食中的铝的分光光度法．结果准确，重视性好．

In this paper a method is rendered to separatemost interference element out,such as Ca,Mg,Fe,Mn etc, in the course of melting Sample and extraction, with Na2CO3 and NaOH,and spectrophotometric to determinate aluminium in carbonate rock and grain with metabromocarboxyazo-m as chromogenic reagent.It'S accuracy and precision very well.