Determination of Butyltin Compounds in Sediments by Means of Hydride Generation/Cold Trapping Gas Chromatography Coupled to Inductively Coupled Plasma Mass Spectrometric Detection

• Published in: Journal of mass spectrometry. Vol. 32; no. 5; pp. 542 - 549
• Main Authors: SEGOVIA GARCIA, E, GARCIA ALONSO, J. I, SANZ-MEDEL, A
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.05.1997; Wiley
• Subjects: Analysis methods; Analytical chemistry; Applied sciences; butyltin compounds; Chemistry; Chromatographic methods and physical methods associated with chromatography; cold trapping; environmental analysis; Exact sciences and technology; inductively coupled plasma mass spectrometry; Other chromatographic methods; Pollution; Soil and sediments pollution; speciation; Trace analysis; Gas chromatography; Chemical analysis; Coupled method; Tin Organic compounds; Soil pollution; Inductive coupling plasma spectrometry; Sediments; Mass spectrometry; Speciation; Quantitative analysis
• ISSN: 1076-5174; 1096-9888
• DOI: 10.1002/(SICI)1096-9888(199705)32:5<542::AID-JMS507>3.0.CO;2-8

A procedure for the determination of butyltin compounds in sediments is described. The method is based on the generation of volatile mono‐, di‐ and tributyltin (MBT, DBT, TBT) hydrides from a 4% (v/v) acetic acid medium using NaBH4. The hydrides formed are then trapped on a Chromosorb W HP SP2100 packed glass column immersed in liquid nitrogen. Sequential desorption of the hydrides is achieved by Nichrome wire heating of the column. The MBT, DBT and TBT hydrides are detected by mass spectrometry using an inductively coupled plasma source. Detection limits of 7, 4 and 4 pg (as Sn) for MBT, DBT and TBT, respectively, were obtained. The method was applied to the determination of organotin compounds (DBT and TBT) in the certified reference material CRM 462 with satisfactory results. © 1997 by John Wiley & Sons, Ltd.