Air Monitoring

Traceable calibration methods for oxidised mercury

Jul 04 2019 Read 662 Times

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. 

Reader comments

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Post a Comment





Digital Edition

International Environmental Technology Buyers Directory 2020

August 2020

In This Edition Business News - Bavaria combines forces in hydrogen research - Vaisala appoints Kai Öistämö as President and CEO - Jean-Philippe Amiet appointed Global Sales Manager of C...

View all digital editions

Events

SIAF Guangzhou - NEW DATES

Aug 11 2020 Guanghzou, China

National Safety Show

Aug 12 2020 Auckland, New Zealand

IE Expo China 2020 - NEW DATES

Aug 13 2020 Shanghai, China

APBE 2020

Aug 16 2020 Guangzhou, China

View all events