Accumulation of HNO3-extractable tin in agricultural and non-agricultural soils by the use of triphenyltin acetate

✍ Scribed by T. J. S. Keijzer; J. P. G. Loch

• Publisher: Springer Netherlands
• Year: 1995
• Tongue: English
• Weight: 740 KB
• Volume: 84
• Category: Article
• ISSN: 0049-6979
• DOI: 10.1007/bf00475345

✦ Synopsis

The accumulation of extractable tin (Sn) due to use of the fungicide triphenyltin acetate has been studied on a field scale both in agricultural soils and adjacent and remote non-agricultural soils. Correlations between Sn, organic matter and soil-pH are evaluated. Removal routes of Sn are proposed and quantified where possible. In the soil samples Sn was analyzed after a HNO3-extraction using graphite furnace atomic absorption spectrometry. Results show that accumulation of Sn in the plough layer of the agricultural soils takes place. However the quantities found are lower than predicted with model calculations. The formation of immobile SnO2 might be partly responsible for the observed gap. Correlations between Sn and organic matter are positive for the plough layer, however large variations suggest a disproportional removal of Sn from the plough layer. Tin is also found to accumulate in the topsoil of surrounding non-agricultural soils. The organic rich O-horizon shows high levels, but Sn is also found at greater depth suggesting downward transport. The Sn at these locations probably originates from transport of tin and residues of the fungicide from the agricultural soils through the atmosphere either by spray drift or wind erosion.