Schöler H F, Thofern E
Zentralbl Bakteriol Mikrobiol Hyg B. 1980;171(6):512-24.
A regional survey of sewage sludge compositions was conducted in the Rhein-Sieg-Kreis, including the city of Bonn. Sludge samples were obtained from 28 treatment plants. The following metals and metalloids have been measured by AAS: Fe, Zn, Cu, Cr, Ni, Pb, Cd, Hg, As, Se. The concentrations of some trace metals were extremely high, in particular the toxic element Cadmium. Sources of environmental pollutions can be revealed by analysing sludge constituents.
在包括波恩市在内的莱茵-西格县开展了一项污水污泥成分的区域调查。污泥样本取自28个处理厂。通过原子吸收光谱法测定了以下金属和类金属：铁、锌、铜、铬、镍、铅、镉、汞、砷、硒。一些痕量金属的浓度极高，尤其是有毒元素镉。通过分析污泥成分能够揭示环境污染源。
