德国施纳肯堡/易北河监测站对河水中汞的在线测定。

On-line determination of mercury in river water at the German monitoring station Schnackenburg/Elbe.

作者信息

Elsholz O, Frank C, Matyschok B, Steiner F, Wurl O, Stachel B, Reincke H, Schulze M, Ebinghaus R, Hempel M

机构信息

Fachhochschule Hamburg, Germany.

出版信息

Fresenius J Anal Chem. 2000 Jan;366(2):196-9. doi: 10.1007/s002160050038.

DOI:10.1007/s002160050038

PMID:11225927

Abstract

A monitor is described which provides the on-line determination of mercury in river water at concentrations from 20 to 1000 ng/L. The measurement includes an on-line digestion with Br-/BrO3- and UV-radiation. Each determination is controlled by an on-line addition of 50 and 100 ng/L mercury carried out by pre-dilution of a 500 and 1000 ng/L stock solution using sequential injection analysis (SIA). One cycle of analysis takes 20 min and results in nine signals. A five days stand-alone operation has been performed successfully. Details are also published at web page: "http/www.rzbd.fh-hamburg.de/-prmercol".

摘要

本文介绍了一种用于在线测定河水中汞含量的监测仪，其测定浓度范围为20至1000纳克/升。该测量方法包括用Br⁻/BrO₃⁻和紫外线辐射进行在线消解。每次测定通过顺序注射分析（SIA）对500和1000纳克/升储备溶液进行预稀释，在线添加50和100纳克/升汞来控制。一个分析周期需要20分钟，并产生九个信号。已成功进行了为期五天的独立运行。详细信息也发布在网页：“http/www.rzbd.fh-hamburg.de/-prmercol”上。