Screening of transformation products in soils contaminated with unsymmetrical dimethylhydrazine using headspace SPME and GC-MS

Analytica Chimica Acta
Bulat KenessovLars Carlsen

Abstract

The paper describes a novel SPME-based approach for sampling and analysis of transformation products of highly reactive and toxic unsymmetrical dimethylhydrazine (UDMH) which is used as a fuel in many Russian, European, Indian, and Chinese heavy cargo carrier rockets. The effects of several parameters were studied to optimize analyte recovery. It was found that the 85 microm Carboxen/polydimethylsiloxane fiber coating provides the highest selectivity for selected UDMH transformation products. Optimal sampling/sample preparation parameters were determined to be 1-h soil headspace sampling time at 40 degrees C. The GC inlet temperature was optimized to 170 degrees C held for 0.1 min, then 1 degrees C s(-1) ramp to 250 degrees C where it was held for 40 min. Temperature programming resulted in a fast desorption along with minimal chemical transformation in the GC inlet. SPME was very effective extracting UDMH transformation products from soil samples contaminated with rocket fuel. The use of SPME resulted in high sensitivity, speed, small labor consumption due to an automation and simplicity of use. It was shown that water addition to soil leads to a significant decrease of recovery of almost all target transformation products of ...Continue Reading

References

Apr 20, 2006·Journal of Chromatography. a·Janel E GrebelI H Mel Suffet
Sep 23, 2008·The Science of the Total Environment·Caroline M B JaraulaKathleen A Welch
Oct 13, 2009·Journal of Chromatography. a·Brad Baker, Mark Sinnott

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Citations

Mar 23, 2011·Chromatographia·Bulat KenessovMikhail Nauryzbayev
Dec 7, 2011·Journal of Separation Science·Mohammad B GholivandPeyman Fattahpour
Jul 6, 2014·Ecotoxicology·Saule KolumbayevaBenazir Zhunusbekova
Mar 20, 2020·Chemical Science·Zihang QiuChao-Jun Li
Dec 20, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Andrzej BiałowiecJacek A Koziel
Oct 30, 2020·Environmental Pollution·T V KorolevaS A Lednev

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