Moreno Rodriguez M J, Cala Rivero V, Jiménez Ballesta R
Departamento de Química Agrícola, Geología y Geoquímica, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid 28049, Spain.
Environ Geochem Health. 2005 Sep;27(5-6):513-9. doi: 10.1007/s10653-005-8625-9.
Selenium was determined from 25 topsoils and 25 plants in the semi-arid Central Spain where large extents of soils are developed on evaporitic materials. Some species of vegetation associated with them are of the genera Astragalus, Salsola, Mercurialis, Phlomis, Thymus and Atriplex. Total selenium in soils was determined and its bioavailability assessed by chemical sequential fractionation. Se content in soils was adequate (in the range 0.17-0.39 mg kg(-1)) or large (in the range 0.50-4.38 mg kg(-1)) and appeared in highly and/or potentially available forms. Several plant species showed high Se levels (in the range 5-14.3 mg kg(-1)), which can be a potential risk of toxicity to animals. Data obtained from the study area can be used as a guide to the range of values in soils and plants of the European Mediterranean area that are relatively unpolluted from industrial sources, allowing comparison with more polluted areas.
在西班牙中部半干旱地区，对25份表层土壤和25种植物进行了硒含量测定。该地区大片土壤由蒸发岩物质发育而成。与之相关的一些植被物种属于黄芪属、猪毛菜属、山靛属、糙苏属、百里香属和滨藜属。测定了土壤中的总硒含量，并通过化学连续分级法评估其生物有效性。土壤中的硒含量充足（范围为0.17 - 0.39毫克/千克）或较高（范围为0.50 - 4.38毫克/千克），且以高度和/或潜在可利用的形式存在。几种植物物种的硒含量较高（范围为5 - 14.3毫克/千克），这可能对动物构成潜在的毒性风险。从研究区域获得的数据可作为欧洲地中海地区相对未受工业源污染的土壤和植物中硒含量范围的参考，以便与污染更严重的地区进行比较。
