Determination of Butyltin Compounds in Sediments by Means of Hydride Generation/Cold Trapping Gas Chromatography Coupled to Inductively Coupled Plasma Mass Spectrometric Detection
✍ Scribed by Segovia García, E.; García Alonso, J. I.; Sanz-Medel, A.
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 326 KB
- Volume
- 32
- Category
- Article
- ISSN
- 1076-5174
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✦ Synopsis
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
The hydrides formed are then trapped on a Chromosorb W HP SP2100 packed glass column NaBH 4 . 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 certiÐed reference material CRM 462 with satisfactory results.