Air Monitoring

Traceable calibration methods for oxidised mercury

Jul 04 2019

Author: Iris de Krom on behalf of VSL Dutch Metrology Institute

Free to read

This article has been unlocked and is ready to read.

Download

Because of its toxicity, regulations on the use and exposure limits for mercury are becoming even more stringent. For health and safety purposes, as well as for enforcement of regulations accurate measurements and hence calibrations are required. In recent years research has led to traceable calibration of elementary mercury (Hg0) concentrations, including the primary standard currently operational at VSL. However, mercury also occurs in oxidised forms (Hg2+) that are reactive and can be transformed into organic Hg species such as methylmercury (MeHg), which is very toxic and most prone to bioaccumulation in aquatic systems (Figure 1). Half of atmospheric mercury emissions are of natural origin whilst the rest are of anthropogenic sources, primarily from fossil fuel burning and other high-temperature industrial processes, such as cement clinker production, waste incineration, ore roasting and steel production. 


Digital Edition

International Environmental Technology June 2021

June 2021

In This Edition Business News - Collaboration to enhance research in to atmospheric pollution - Leading sensor technology event affirms its leading role as a digital conference - Afriso ope...

View all digital editions

Events

DXC 2021

Aug 02 2021 Virtual event

DioXin 2021

Aug 22 2021 Xi'an, China

World Water Week

Aug 23 2021 Digital event

The Water Show Africa 2021

Aug 24 2021 Online event

AWRE 2021

Aug 25 2021 Sydney, Australia

View all events