摘要
铊及其化合物是一类毒性强,传播广泛的大气污染物.铊的气态污染主要来源是矿物冶炼、火力发电、水泥等行业.铊及其化合物毒性高而排放量较低,已经在国内外富铊地区引起中毒事件.目前,由于冶炼,火电等行业在国内的飞速发展,其排放造成的大气铊污染又给人群健康和生态安全造成了严重的威胁.铊进入大气后,能够伴随大气活动,食物链和沉降等与人体接触.现有的尾气治理措施如除尘和酸洗对废气中的铊具有一定程度的去除效果但不能彻底解决废气中的铊污染问题.通过对铊不同价态化合物的物理化学特征分析,将高毒性,易迁移的一价化合物转化为难迁移,低毒性的三价铊氧化物的新思路是可行的.
Thallium and its compounds are widespread air pollutants with extremely toxicity.The primary sources of gaseous pollution of thallium are mineral smelting,thermal power generation and cement.Thallium and its compounds have high toxicity and low emission,which have caused poisoning events in thallium affluent areas.Due to the rapid development of smelting,thermal power,and other industries in China,the atmospheric thallium pollution caused by its emissions poses a severe threat to people′s health and ecological security.When thallium enters the atmosphere,it can contact the human body with atmospheric activities,food chains,and sedimentation.The existing tail gas treatment such as dust removal and acid washing can remove thallium in flue gas to a certain extent,but it can not completely solve the problem of thallium pollution in flue gas.It is feasible to transform the highly toxic and quickly migrating univalent compounds into the trivalent thallium oxides with low toxicity by analyzing the physicochemical characteristics of different valence state compounds of thallium.
作者
马强
王学谦
宁平
王郎郎
徐博雯
陈军辉
黄嘉珩
郝吉明
MA Qiang;WANG Xueqian;NING Ping;WANG Langlang;XU Bowen;CHEN Junhui;HUANG Jiaheng;HAO Jiming(Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming,650500,China;Sichuan Academy of Environmental Science,Chengdu,610041,China;China Telecom Co.Ltd.Chengdu Branch,Chengdu,610000,China;State Key Joint Laboratory of Environment Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing,100084,China)
出处
《环境化学》
CAS
CSCD
北大核心
2020年第12期3362-3370,共9页
Environmental Chemistry
基金
国家自然科学基金(51868030,51568027)
国家重点研发计划项目(2017YFC0210500,2018YFC0213400)
云南省中青年学术和技术带头人后备人才项目(2015HB012)资助
关键词
气态铊污染
迁移转化
污染现状
改性吸附剂
gaseous thallium pollution
migration and transformation
pollution status
modified adsorbent
作者简介
通讯联系人:王学谦,Tel:13759478133,E-mail:xqwang214@163.com
