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Speciation of Butyl- and Phenyltin Compounds in Sediments Using Pressurized Liquid Extraction and Liquid Chromatography–inductively Coupled Plasma Mass Spectrometry by S Chiron; S Roy; R Cottier; R Jeannot is a Chemistry article available to read on EtoBox.

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A liquid chromatographic method with inductively coupled plasma mass spectrometry is proposed for the speciation of butyl-(monobutyltin, dibutyltin, tributyltin) and phenyl-(monophenyltin, diphenyltin, triphenyltin) tin compounds in sediments. After evaluation of different additives in the mobile phase, the use of 0.075% (w / v) of tropolone and 0.1% (v / v) of triethylamine in a mobile phase of methanol-acetic acid-water (72.5:6:21.5) allowed the best chromatographic separation of the six compounds. Pressurized liquid extraction (PLE) with a methanolic mixture of 0.5 M acetic acid and 0.2% (w / v) of tropolone was suitable for the quantitative extraction of butyl-and phenyltin compounds with recovery values ranging from 72 to 102%. This analytical approach was compared to conventional solvent extraction methods making use of acids and / or organic solvent of medium polarity. The main advantages of PLE over conventional solvent extraction are: (i) the possibility to extract quantitatively DPhT and MPhT from sediments, which could not be done by a solvent extraction approach; (ii) to preserve the structural integrity of the organotin compounds; (iii) to reduce the extraction time fr

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Author

S Chiron; S Roy; R Cottier; R Jeannot

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-3778)

Published

2000

Language

EN

Field

Chemistry (Physical Sciences)