Characterization of soil heavy metal pools in paddy fields in Taiwan. Chemical extraction and solid-solution partitioning Roemkens, Paul F; Koopmans, Gerwin F [Soil Science Center, Alterra-Wageningen UR, Wageningen (Netherlands)]; Horngyuh, Guo; Chienliang, Chu; Tsangsen, Liu; Chihfeng, Chiang [Taiwan Agricultural Research Inst. (TARI), Wufong (China)] 54 ENVIRONMENTAL SCIENCES; AVAILABILITY; CONTAMINATION; ENVIRONMENTAL QUALITY; EXTRACTION; HEAVY METALS; PARTITION; RISK ASSESSMENT; SOILS; TAIWAN Ongoing industrialization has resulted in an accumulation of metals like Cd, Cu, Cr, Ni, Zn, and Pb in paddy fields across Southeast Asia. Risks of metals in soils depend on soil properties and the availability of metals in soil. At present, however, limited information is available on how to measure or predict the directly available fraction of metals in paddy soils. Here, the distribution of Cd, Cu, Cr, Ni, Zn, and Pb in 19 paddy fields among the total, reactive, and directly available pools was measured using recently developed concepts for aerated soils. Solid-solution partitioning models have been derived to predict the directly available metal pool. Such models are proven to be useful for risk assessment and to derive soil quality standards for aerated soils. (orig.) Germany 2009-06-15 English Journal Article Journal Name: Journal of Soils and Sediments; Journal Volume: 9; Journal Issue: 3 Medium: X; Size: page(s) 216-228 https://doi.org/10.1007/s11368-009-0075-z [] 3 9 Journal ID: ISSN 1439-0108; TRN: DE09GA743 DE 2010-01-01 21223504