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

Asian Environmental Technology 26.2 - April/May 2022

May 2022

In This Edition Business News - Crowcon enters the air quality market - Satellites collect carbon emissions data - How we measure the effects of methane matters for climate policy Water...

View all digital editions

Events

AIHce 2022

May 23 2022 Nashville, TN, 2022

Safety, Health & Wellbeing LIVE

May 23 2022 Manchester, UK

KIOSH

May 25 2022 Nur-Sultan, Kazakhstan

Hannover Messe

May 30 2022 Digital event

IFAT

May 30 2022 Munich, Germany

View all events