直接显色光度法测定水中硫化物方法改进  

Determination of Sulfide in Water by Improved Methylene Blue Spectrophotometry

作　　者：安雅娟[1] 辛天兵[2] 

机构地区：[1]保定市环境保护监测站,河北保定071000 [2]河北大学,河北保定071000

出　　处：《环境监测管理与技术》2008年第3期64-66,共3页The Administration and Technique of Environmental Monitoring

摘　　要：用10mLφ（HEl）=0.5的溶液酸化水样，10mL锌氨络盐吸收液，于0．6L／min抽空气30min，溶液吸收硫化物后吸光值稳定，水和废水的测定加标回收率为94.4％～101％，精密度为2．87％～3.27％。改进后的直接显色分光光度法测定水中硫化物，酸化-抽气分离装置简单、操作方便。The sulfide was determined by improved method of direct spectrophotometry with simple acidification-exhaust separation devices. The method was easily operated by 10 mL φ（HCl） =0.5 acidified sample solution, 0.6 L/min for 30 min air sweeping and absorption was stability. The recoveries of water and wastewater were from 94.4% to 101% , the precisions from 2.87% to 3.27%.

关 键 词：硫化物 直接显色光度法 方法改进 

分 类 号：O657.32[理学—分析化学]