Organotin analysis

ALS offers analysis of organotin compounds mainly by GC- ICP-SFMS (Gas Chromatography coupled with ICP-SFMS). The testing for organotin compounds is accredited for water, soil, sediment, sludge and biota but can also be offered for electronics, textiles, paper, pulp and more. ALS is also proud to offer our clients low LOQ testing of OTC compounds, down to 0.0002 mg/kg, or 0.2µg/kg, dry weight for solid samples.

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There are four main groups of organotin compounds; tetra-, tri-, di- and mono-organotin compounds.

Mono-organotin and di-organotin compounds

Monoorganotin compounds and diorganotin compounds are frequently used as stabilizers in the manufacturing of plastics. These compounds are also used as catalysts in the binder of sealants, coatings, adhesives and more.

Apart from dibutyltin (DBT) that may be immunotoxic and have an irritant effect on skin and eyes, mono-organotin and di-organotin compounds are generally characterized by lower toxicity and limited biological activity.

ALS can offer the below testing capabilities for mono-organotin and di-organotin compounds:

• Analysis of monobutyltin (MBT)
• Analysis of dibutyltin (DBT)
• Analysis of monooctyltin (MOT)
• Analysis of dioctyltin (DOT)
• Analysis of monophenyltin (MPhT)
• Analysis of diphenyltin (DPht)

 

Tri-organotin compounds

Triorganotin componds are the most toxic organotin compounds used as industrial biocides. The most commonly known source of the toxic tributyltin (TBT) is from its’ use as antifungal agent. It has been used on textiles, paper, wood and as a marine anti-biofouling agent on boats and ships. The use of TBT paint on boats and ships has caused damage to marine life in harbors. Due to the toxicity of triorganotin compounds, they are now banned in large parts of the world.

ALS offers analysis of triorganotin compounds, see list below:

• Analysis of tributyltin (TBT)
• Analysis of tricyclohexyltin (TCHT)
• Analysis of triphenyltin (TPhT)