全差示分光光度法测定天然矿泉水中微量硼  

DETERMINATION OF TRACE BORON IN NATURAL MINERAL SPRING WATER BY DIFFERENTIAL SPECTROPHOTOMETRIC

作　　者：何炼 马欣 

机构地区：[1]辽宁省地质实验研究所

出　　处：《辽宁地质》1996年第1期75-78,共4页

摘　　要：在ｐＨ为４．２的醋酸－醋酸钠缓冲溶液中，用ＥＤＴＡ掩蔽干扰元素。根据铍试剂Ⅲ分子结构中所含官能团能与硼酸产生反应的机理，拟定了天然矿泉水中微量硼的分析方法。最低检出限为０．００４ｍｇ／Ｌ，回收率为９１％～１０４％。In acetic acid-sodium acetate solution which pH is 4. 2, EDTA is used to get rid of theinfluence of some interfering elements. Based on the characteristics of the functioning groupin the molecular structure of beryllium reagent can react with boric acid, the paper use themethod of defferential spectrophotometric to determine trace boron in natural mineral springwater. As a,result, the . lowest detection limit is 0. 004mg/L,recovery rate is 91 %-104%.

关 键 词：分光光度法 天然矿泉水 微量硼 矿泉水 

分 类 号：P641.5[天文地球—地质矿产勘探]