Organic tin compounds

The method is primarily used in collaborative research projects, and other analytical services are agreed on a case by case basis. Written requests and contacts:
Environmental pollutant analysis

Accreditation

• The method is accredited with a flexible scope for tissue and sediment

Number of samples

• Also for single samples

Matrices

• Whole blood and other human samples
• Fish and other animal samples
• Food
• Soil, sediment and other environmental samples

Method description

• Analytes are extracted with an organic solvent. Ethyl derivatives are formed using sodium tetraethyl borate, and the samples are cleaned with an aluminium oxide column. The quantification is performed with a gas chromatograph coupled to a triple quadrupole mass spectrometer (GC-MS/MS).

Limit of quantification

• 0.4–3.0 ng/g dry weight (sediment)
• 0.1–1.1 ng/g fresh weight (tissue)
• The analysis of dioctyltin from all matrices and diphenyltin from tissue samples is semiquantitative

Sampling instructions

• Sample container: glassware washed with HCl (available from THL), aluminium foil or original package
• Avoid contact with coloured plastics
• Blood samples must be treated with an anticoagulant
• Minimum sample amount: whole blood 5.0 ml, water 500 ml, other samples 50 g
• Maximum storage time: -18°C for at least 5 years, -70°C or in liquid nitrogen for at least 20 years
• See also the general sampling instructions that apply to all analyses:
  Environmental pollutant analysis

Dispatch

• Cold package

Analytes

• Monobutyltin (MBT)
• Dibutyltin (DBT)
• Tributyltin (TBT)
• Monophenyltin (MPhT)
• Diphenyltin (DPhT)
• Triphenyltin (TPhT)
• Dioctyltin (DOT)