土壤中硫化物在盐酸和二氯化锡酸化系统下的解析研究  

Analytical Study of Sulfide in Soil under Hydrochloric Acid and Tin Dichloride Acidification System

作　　者：匡华成[1] Kuang Huacheng(Anshan Environmental Monitoring Center Station,Anshan 114000,China)

机构地区：[1]鞍山市环境监测中心站,辽宁鞍山114000

出　　处：《环境科学与管理》2018年第9期140-143,共4页Environmental Science and Management

摘　　要：文章探索在以盐酸为酸化剂下的实验条件,包括还原剂的添加、酸度选择的计算、系统的精密度、准确度的统计、误差分析,目的是为土壤中无机硫化物的检测提供借鉴和参考。四种土壤:污灌区土壤、城市花园土、黄土、稻田土为试验样本的试验中,精密度:四种土壤相对标准偏差分别是2. 60%、4. 0%、5. 5%、5. 8%。样品加标回收率:分别是86. 1%、98%、92. 3%、92. 6%。实验结果满足试验方法的精密度、准确度要求。该方法可以完成对难溶性金属硫化物、易溶硫化物完全解析。且二氯化锡不会对S2-的测定结果造成误差。This paper explores the experimental conditions under the use of hydrochloric acid as an acidifying agent, inclu￣ding the addition of reducing agent, the calculation of acidity selection, the precision of the system, the accuracy of the statistics,and the error analysis. The purpose is to provide for the detection of inorganic sulfides in the soil. Learn from and reference. Soilin sewage irrigation area, urban garden soil, loess, and paddy soil were tested in the test sample. The relative standard deviationsof the four soils were 2. 60%,4, 0%,5. 5%, and 5. 8%, respectively. The recoveries of spiked samples were 86, 1%,98%,92, 3%, and 92. 6%, respectively. The experimental results meet the precision and accuracy requirements of the test method.The method can completely resolve the poorly soluble metal sulfide and the easily soluble sulfide. Moreover, tin dichloride doesnot cause an error in the measurement result of S2 -.

关 键 词：硫化物 酸化 精密度 加标回收率 氧化还原反应 

分 类 号：X833[环境科学与工程—环境工程]