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The study of cobalt leaching from soils, sewage sludges and composts using a one-step extraction

机译：用一步萃取法研究土壤，污水污泥和堆肥中钴的浸出

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The study evaluated the leaching of cobalt (Co) in soils fertilized with sewage sludge (SS) and composts depending on the extractant used. SS came from rural, mechanical–biological treatment plant in Dobrzeń, Lower Silesia region. In addition, those SS were processed by composting. Sludges and composts were used to fertilise the energy plants during lysimeter experiment conducted during 2008–2013. The overall, as well as extracted by H2O, 0.1M HCl and 1M HCl, 0.05M Na2EDTA and 0.1M Na2EDTA, content of Co in samples were analysed. Additionally, the impact of pH and organic matter (OM) content on the leachability of Co were researched. It was found that the soil samples were rich in Co. Its share slightly depended on fertilisation with SS and compost. Co leaching depends on the type and concentration of extractant. The highest content of Co were leched with 0.1 M Na2EDTA, and the lowest content with 0.1M HCl. Co concentration in H2O extracts was not determined as its content was below the limit of quantification. Leachability of Co in the analysed samples was influenced by the overall Co content as well as pH and OM content.
机译：这项研究评估了钴（Co）在污水污泥（SS）和堆肥施肥的土壤中的浸出情况，具体取决于所使用的萃取剂。 SS来自下西里西亚地区Dobrzeń的农村机械生物处理厂。另外，这些SS通过堆肥处理。在2008-2013年进行的溶渗仪实验中，污泥和堆肥被用于给能源工厂施肥。整体以及用H 2 O，0.1M HCl和1M HCl，0.05M Na 2 EDTA和0.1M Na 2 萃取分析了EDTA，样品中Co的含量。另外，研究了pH和有机物（OM）含量对Co浸出率的影响。结果表明，土壤样品中富含Co。其含量在一定程度上取决于SS和堆肥的施肥情况。共浸取决于萃取剂的类型和浓度。 Co的最高含量用0.1 M Na 2 EDTA浸润，最低的含量用0.1M HCl浸润。 H 2 O提取物中的Co浓度未确定，因为其含量低于定量极限。 Co在分析样品中的溶出度受总Co含量以及pH和OM含量的影响。

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