Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The lethal remains of the tin man...

19.03.2007
A method for monitoring highly poisonous tin compounds originating from landfill sites has been developed by French Scientists.

The news is reported in the latest edition of the Royal Society of Chemistry’s Journal of Analytical Atomic Spectrometry.

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.”

Tony Kirby | alfa
Further information:
http://www.rsc.org

More articles from Ecology, The Environment and Conservation:

nachricht Bioinvasion on the rise
15.02.2017 | Universität Konstanz

nachricht Litter Levels in the Depths of the Arctic are On the Rise
10.02.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Impacts of mass coral die-off on Indian Ocean reefs revealed

21.02.2017 | Earth Sciences

Novel breast tomosynthesis technique reduces screening recall rate

21.02.2017 | Medical Engineering

Use your Voice – and Smart Homes will “LISTEN”

21.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>