水环境中铊在线监测系统初步研究-以湖南为例

Preliminary Study on Automatic Monitoring System in Thallium of Water Quality-Hunan Province

铊作为一种剧毒的蓄积性重金属元素,伴随着铊专项整治工作的开展,怎样形成一套完成的铊在线监测系统成为研究的热点。通过对地表水、污染源重金属在线监测相关技术标准的系统研究,首次确定了铊在线监测仪的相关技术要求;并从复杂样品自动前处理、三电极的检测系统、电化学检测电路优化、增敏材料的选择、电极自动化再生免维护、抗干扰技术几个方面进行攻关,研制了水中痕量铊自动监测仪器;该标准体系的形成和自动监测仪器的研发在湖南省内得到了良好的应用,并为湖南省重金属涉铊企业管理提供了有力的技术支持。

Thallium is a toxic accumulative heavy metal element.With the development of thallium regulation,how to form a complete on-line monitoring system for thallium has become a research focus.The technical requirements of thallium on-line monitoring instrument were determined for the first time through the systematic study on the technical standards of on-line monitoring of heavy metals in surface water and pollution sources.And to ckied key issues from the complex sample automatic pretreatment,three-electrode detection system,electrochemical detection circuit optimization,the selection of sensitizing materials,automatic electrode regeneration maintenance-free,anti-interference technology several aspects of the development of trace thallium in water automatic monitoring instrument;The formation of the standard system and the research and development of automatic monitoring instrument have been well applied in Hunan Province,and provide strong technical support for the management of thallium related heavy metal enterprises in Hunan Province.