Product category:
Potable water, test and treatment
News Release from: Metrohm UK | Subject: Hg via 797 VA Computrace
Edited by the Processingtalk Editorial
Team on 27 February 2008
Analysis of Mercury in effluent and
potable waters
Mercury can be analysed using the 797 VA Computrace from Metrohm with a gold rotating disk electrode down to around 1ppb in a variety of water matrices
Mercury is present in the world around us and once in the atmosphere, mercury can travel long distances and then be deposited into streams and rivers through atmospheric fall out The major releases of mercury into water and air result from certain industrial processes and improper disposal of mercury containing products
This article was originally published on Processingtalk on 2 Jul 2008 at 8.00am (UK)
Related stories
Tighter process control in acid pickling baths
Online ion chromatography from Metrohm has enabled tighter process control of acid pickling baths, as the final cleaning stage prior to metal plating
The determination of acidity in soft drinks
Sparkling drinks are the main cause of increasing tooth erosion among teenagers: a study in the British Dental Journal found a strong link between fizzy drink consumption and tooth erosion
Once in streams and rivers, mercury generally does not remain suspended in the water column but is deposited in the sediment and can pass through the food chain.
It has been known for hundreds of years that mercury is toxic in large quantities: however recent evidence suggests that even low levels of mercury may be hazardous, thus it is important that the level of mercury present in different water sources is measured and if necessary controlled.
Mercury can be analysed using the 797 VA Computrace from Metrohm with a gold rotating disk electrode down to around 1ppb in a variety of water matrices.
Voltammetry (VA) is an established technique that is over 80 years old but recent advances made by Metrohm have improved the measuring cell, electrodes and PC control interface so that today VA represents a clean, reliable and robust technique for the determination of numerous heavy metals at low concentrations.
Some of the reasons why more and more laboratories are placing their analytical trust in Voltammetry:.
* Detection limits comparable to spectroscopic techniques for a fraction of the price.
* Running costs are low with no expensive flammable gases required.
* Recognised technique with many official methods and capable of analysing many different transition metals.
* Standard addition calibration on each and every sample eliminates the matrix effects seen in spectroscopic techniques and is done automatically using Metrohm Dosino technology.
To learn more about the analysis of mercury in effluent and potable waters using the Metrohm 797 VA Computrace, please contact Metrohm uk, where our Competence Centre will be delighted to provide further information. Request a free brochure from Metrohm UK ...
• Metrohm UK: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
Search the Pro-Talk network of sites
