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Environmental Poisons: New Method To Evaluate Highly Toxic Tin Compounds

Date:
March 19, 2007
Source:
Royal Society Of Chemistry
Summary:
A method for monitoring highly poisonous tin compounds originating from landfill sites has been developed by French Scientists. Organotin compounds are widely used as heat and light stabilisers in the production of plastics, and also as fungicides, pesticides, wood preservatives and antifouling paints.
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A method for monitoring highly poisonous tin compounds originating from landfill sites has been developed by French Scientists.

Organotin compounds are widely used as heat and light stabilisers in the production of plastics, and also as fungicides, pesticides, wood preservatives and antifouling paints.

But contamination of the environment by such compounds both in households and in waste sites presents a problem owing to their severe toxicity to humans.

Organotins are extremely neurotoxic and can cause organ failure – their ability to interact with fatty surfaces in cells such as cell membranes (known as lipophilicity) is thought to be one of the reasons behind this.

The measurement of contamination has not been easy in the past, and previous methods only provided an estimate of some toxic forms of tin, chiefly tributyl tin.

But Dr David Amouroux and a team at the University of Pau in Southern France have devised a strategy to completely analyse and quantify all alkylated tin compounds arising from landfill sites.

The technique consists of three optimised steps: nitric acid extraction, derivatisation, and chromatographic separation.

After addition of isotopically enriched butyltin, single analysis is all that is required to give a reliable estimates of all the organotins in a given sample. The procedure was successfully tested on three French landfill sites.

Dr Amouroux said: “Such a methodology can be extremely useful to assess the fate of organotin compounds, providing a specific, reliable and complete understanding of the environmental impact of this kind of effluent.”

Reference: The Journal of Analytical Atomic Spectrometry published by The Royal Society of Chemistry


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The above post is reprinted from materials provided by Royal Society Of Chemistry. Note: Materials may be edited for content and length.


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Royal Society Of Chemistry. "Environmental Poisons: New Method To Evaluate Highly Toxic Tin Compounds." ScienceDaily. ScienceDaily, 19 March 2007. <www.sciencedaily.com/releases/2007/03/070318140230.htm>.
Royal Society Of Chemistry. (2007, March 19). Environmental Poisons: New Method To Evaluate Highly Toxic Tin Compounds. ScienceDaily. Retrieved July 29, 2015 from www.sciencedaily.com/releases/2007/03/070318140230.htm
Royal Society Of Chemistry. "Environmental Poisons: New Method To Evaluate Highly Toxic Tin Compounds." ScienceDaily. www.sciencedaily.com/releases/2007/03/070318140230.htm (accessed July 29, 2015).

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