Effects of gamma-sterilization on butyltin homogeneity and content in sediments: a GC-ICP-MS study

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DOIResolve DOI: http://doi.org/10.1007/s00216-003-1854-9
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TypeArticle
Journal titleAnalytical and Bioanalytical Chemistry
ISSN1618-2642
Volume376
IssueMay 1
Pages8591; # of pages: 7
AbstractA GC-ICP-MS method based on extraction and alkylation of butyltins with sodium tetraethylborate was used to quantitatively assess the fate of these analytes in solutions and sediments following exposure to gamma-irradiation. The effects of a 2.5 Mrad sterilization dose on three butyltin species in both methanolic calibration solutions and in sediment matrices were investigated. Although significant losses of tributyltin (TBT, 90%), dibutyltin (DBT, 100%) and monobutyltin (MBT, 80%) were detected in standard solutions prepared in methanol following gamma-irradiation, no species inter-conversion occurred. Some degradation of TBT (38%) and DBT (32%) but no significant change in MBT content was found using a spiked sediment CRM HISS-1. Conversion DBT to MBT in spiked HISS-1 was deduced. Much smaller degradation of TBT (16% loss) and 10% loss of DBT by conversion to MBT (14% gain) was registered using a sediment blend of PACS-2 and HISS-1 (SOPH). Despite some initial losses of TBT and DBT due to irradiation, better than 2% RSD in both TBT and DBT concentrations measured in twelve different bottles of blended sediment SOPH were obtained, indicating the material may be considered homogeneous for these analytes. Results from a long-term five-year stability study of PACS-2 show that all three butyltins are stable during storage at 4 degrees C followed with 2.5 Mrad minimum dose of gamma-irradiation sterilization treatment.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for National Measurement Standards
Peer reviewedNo
Identifier19834561
NRC number102
NPARC number8897310
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Record identifier16671ff1-d9c5-4a0c-b077-5cc5adfa8ec0
Record created2009-04-22
Record modified2016-05-09
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