Mercury in ambient air, workroom air and stack gas applications
Jan 20 2020 Read 495 Times
Currently the monitoring of mercury in ambient air is not extensive due to the limited number of monitoring sites around the globe. In one approach P S Analytical (PSA) has used gold on silica Amasil adsorption tubes designed for pumped mercury vapour sampling as passive samplers, offering a simple, maintenance free and cost-effective sampling solution. These tubes are returned to a centralised lab for thermal desorption and analysis by Atomic Fluorescence Spectroscopy (AFS). These sampling tubes may be reused and redeployed.
Workroom air monitoring requires a different sampling approach. There is often the potential of high concentrations of mercury vapour in localised areas, e.g. during Hg recovery/recycling or in manufacturing processes. Real time results are required to protect workers from potential Hg vapour exposure. PSA’s approach here is for the workroom air to be pumped to a central AFS instrument. Multi-stream (room/area) monitoring is therefore easily achieved, offering early warning alarms should set limits be breached.
Stack gas monitoring is usually carried out for emission compliance and typical industries affected include; coal fired power, cement manufacture, smelting operations and the like. Here a coated sample probe takes a volume of stack gas, dilutes and removes interference before carrying it to the AFS for determination.
In common with all of their technology, PSA employs AFS as their central analytical technology which offers dominance and leading performance in terms of; sensitivity, working ranges, freedom from interferences.
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.
In This Edition Business News - Krohne appoints new advisory board chairman and new executive board - Technology underpins Breathe London SMART 50 Award - UK-Norway initiative on ocean gree...
View all digital editions
Mar 01 2020 Chicago, IK, USA
Mar 04 2020 Beijing, China
Mar 09 2020 Memphis, TN, USA
Mar 11 2020 Guangzhou, China
Mar 16 2020 Dubai, UAE