Distribution coefficients of tin in Japanese agricultural soils and the factors affecting tin sorption behavior.
Sorption behavior of tin (Sn) in Japanese agricultural soils was studied. Soil-soil solution distribution coefficient (K(d)) of Sn (K(d)-Sn) for 142 soil samples ranged between 128 and 1,590,000 L kg(-1) with the geometric mean of 12 400 L kg(-1). The K(d)-Sn values for Andosol tended to be higher than those of the other soil groups. Among the relationships between K(d)-Sn values and soil properties, a high correlation was observed for soil active-Al (Al-(hydr)oxide and Al-humus complex) amount and K(d)-Sn. The pH effect on Sn sorption was also investigated. The results suggested that the low pH condition enhanced the Sn sorption in soils. The soil-sorbed Sn fractions in each type of soil material were also evaluated with selective extraction methods. The results showed that most of the soil-sorbed Sn was as organic matter bound or Al/Fe-(hydr)oxide-bound forms.
Nakamaru
Y
Y
Department of Bioindustry, Tokyo University of Agriculture, Yasaka 196, Abashiri, Hokkaido 099-2493, Japan. y3nakama@bioindustry.nodai.ac.jp
Uchida
S
S
D000327:Adsorption; D000383:Agriculture; D000535:Aluminum / Q000737:chemistry; D005290:Ferric Compounds / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007564:Japan; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000737:chemistry*; D014001:Tin / Q000737:chemistry*
D005290:Ferric Compounds; D012987:Soil; D012989:Soil Pollutants; C021024:ferric hydroxide; D014001:Tin; D000535:Aluminum