连续流动分析仪法与亚甲基蓝分光光度法测定水中硫化物的干扰因素研究  

Determination of Sulfide Intreference Factors in Water by Continuous Flow Analysis Spectrophotometry and Methylene Blue Spectrophotometric Method

作　　者：沈柳君 陆文灵 白梅 Shen Liujun;Lu Wenling;Bai Mei(The Ecological and Environmental Monitoring Station of DEEY in Wenshan,Wenshan 663099,China)

机构地区：[1]云南省生态环境厅驻文山州生态环境监测站,云南文山663099

出　　处：《广东化工》2023年第16期154-156,共3页Guangdong Chemical Industry

摘　　要：水质硫化物测定过程中会受到诸多因素的干扰,本文同时采用亚甲基蓝分光光度法和连续流动分析仪法对含有不同浓度NO_(3)^(-^)、NO_(2)^(-)、SO_(3)^(2-)、金属离子(Cu、Pb、Mn、Fe)等物质的硫化物模拟水样进行干扰试验。结果表明:NO_(3)^(-)对两种方法的测定结果影响不大,而NO_(2)^(-)、SO_(3)^(2-)和金属溶液对测定结果影响较大,且两种方法受影响的程度与干扰物质种类有差异,该结果可为实际水样测定过程中方法的选用提供参考。The process of sulfide determination can be interfered by many factors.In this paper,Methylene blue spectrophotometric method and continuous flow analysis spectrophotometry were used to conduct interference experiment with simulated water sample of sulfide which containing different concentrations of nitrate,nitrite,sulffite ion,metal ion(copper,lead,manganese,iron).The results showed that the increase of concentrations of nitrite,sulffite ion,metal ion(copper,lead,manganese,iron)impacted two methods but nitrate do not impacted.and the degree of influence depends on thetypes of interfering substance.The results can provide reference for the method selection of actual water sample determination.

关 键 词：硫化物 连续流动分析法 亚甲基蓝分光光度法 测定 干扰因素 

分 类 号：X830.2[环境科学与工程—环境工程]