Czech University of Life Sciences Prague, Department of Soil Science and Soil Protection, Prague, Czech Republic.
J Hazard Mater. 2011 Feb 15;186(1):540-50. doi: 10.1016/j.jhazmat.2010.11.040. Epub 2010 Nov 18.
Study was focused on the evaluation of pesticide adsorption in soils, as one of the parameters, which are necessary to know when assessing possible groundwater contamination caused by pesticides commonly used in agriculture. Batch sorption tests were performed for 11 selected pesticides and 13 representative soils. The Freundlich equations were used to describe adsorption isotherms. Multiple-linear regressions were used to predict the Freundlich adsorption coefficients from measured soil properties. Resulting functions and a soil map of the Czech Republic were used to generate maps of the coefficient distribution. The multiple linear regressions showed that the K(F) coefficient depended on: (a) combination of OM (organic matter content), pH(KCl) and CEC (cation exchange capacity), or OM, SCS (sorption complex saturation) and salinity (terbuthylazine), (b) combination of OM and pH(KCl), or OM, SCS and salinity (prometryne), (c) combination of OM and pH(KCl), or OM and ρ(z) (metribuzin), (d) combination of OM, CEC and clay content, or clay content, CEC and salinity (hexazinone), (e) combination of OM and pH(KCl), or OM and SCS (metolachlor), (f) OM or combination of OM and CaCO(3) (chlorotoluron), (g) OM (azoxystrobin), (h) combination of OM and pH(KCl) (trifluralin), (i) combination of OM and clay content (fipronil), (j) combination of OM and pH(KCl), or OM, pH(KCl) and CaCO(3) (thiacloprid), (k) combination of OM, pH(KCl) and CEC, or sand content, pH(KCl) and salinity (chlormequat chloride).
本研究集中评估了农药在土壤中的吸附情况，这是评估农业中常用农药可能对地下水造成污染时必需的参数之一。对 11 种选定的农药和 13 种有代表性的土壤进行了批量吸附试验。采用 Freundlich 方程描述吸附等温线，并用多元线性回归法从测量的土壤性质预测 Freundlich 吸附系数。生成的函数和捷克共和国的土壤图用于生成系数分布图。多元线性回归表明，K(F)系数取决于：(a)OM（有机质含量）、pH(KCl)和 CEC（阳离子交换量）的组合，或 OM、SCS（吸附复合体饱和度）和盐度（特丁津）的组合，(b)OM 和 pH(KCl)的组合，或 OM、SCS 和盐度的组合（扑草净），(c)OM 和 pH(KCl)的组合，或 OM 和 ρ(z)（二甲戊灵）的组合，(d)OM、CEC 和粘粒含量的组合，或粘粒含量、CEC 和盐度的组合（己唑酮），(e)OM 和 pH(KCl)的组合，或 OM 和 SCS（甲草胺）的组合，(f)OM 或 OM 和 CaCO(3)（氯酯脲）的组合，(g)OM（唑菌胺酯），(h)OM 和 pH(KCl)的组合（氟乐灵），(i)OM 和粘粒含量的组合（氟虫腈），(j)OM 和 pH(KCl)的组合，或 OM、pH(KCl)和 CaCO(3)的组合（噻虫啉），(k)OM、pH(KCl)和 CEC 的组合，或砂含量、pH(KCl)和盐度（氯化胆碱）的组合。
