School of Earth Sciences, University of Tasmania, Private Bag 79, Hobart, TAS 7001, Australia.
Environ Geochem Health. 2012 Feb;34(1):67-76. doi: 10.1007/s10653-011-9391-5. Epub 2011 May 6.
This study aimed to determine whether >110 years of sewage application has led to recognizable changes in the metal chemistry of soils from former sewage farms, Berlin, Germany. Background concentrations of soils and element enrichment factors were used for the evaluation of possible perturbations of natural element abundances in sewage farm soils. Calculations verify that precious metals (Ag, Au) as well as P, C(org), and heavy metals (Cd, Cu, Ni, Pb, Sn, and Zn) are invariably enriched in sewage farm topsoils (0-0.1 m depth) compared to local and regional background soils. Long-term irrigation of soils with municipal wastewater has caused significant heavy metal contamination as well as a pronounced enrichment in precious metals. Leaching of metals including Ag into underlying aquifers may impact on the quality of drinking water supplies.
本研究旨在确定在德国柏林，超过 110 年的污水应用是否导致了前污水农场土壤金属化学性质的明显变化。土壤的背景浓度和元素富集因子被用于评估污水农场土壤中天然元素丰度可能受到的干扰。计算结果证实，与当地和区域背景土壤相比，贵金属（银、金）以及磷、碳（有机）、重金属（镉、铜、镍、铅、锡和锌）在污水农场表土（0-0.1 米深度）中始终是富集的。长期用城市废水灌溉土壤导致了严重的重金属污染以及贵金属的明显富集。包括银在内的金属浸出到地下含水层可能会影响饮用水的质量。
