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用原子吸收、中子活化、X射线荧光、极谱以及比色等方法,测定了北京、南京地区几种主要土壤中铜、铍、锌、镉、汞、钪、镧、铅、砷、硒、铬、钼、锰、钴和镍等元素的含量。得出了北京、南京地区土壤中各该元素的背景值。背景值用算术平均值及标准差来表示。讨论了土壤类型和成土母质类型对土壤中元素背景值的影响,结论是成土母质类型是影响这些元素背景值的重要因素。作者认为,即使在城市附近,获得这些元素在土壤中的背景值仍然是可能的。
The contents of copper, beryllium, zinc, cadmium, mercury, scandium, lanthanum, lead, arsenic and selenium in several major soils of Beijing and Nanjing were determined by means of atomic absorption, neutron activation, X-ray fluorescence, polarographic and colorimetric methods , Chromium, molybdenum, manganese, cobalt and nickel and other elements of the content. The background values of each element in soils from Beijing and Nanjing were obtained. Background values are expressed as arithmetic mean and standard deviation. The effects of soil types and parent materials on the background values of the elements in the soil are discussed. It is concluded that the parent material types are important factors that influence the background values of these elements. The authors believe that even in the vicinity of cities, it is still possible to obtain the background values of these elements in the soil.