中国土壤中溴,碘的背景含量

通过对全国八百余个表层土样的分析测试,获得了中国土壤中溴、碘背景含量的总体水平及在各土类中的含量,相对于地壳丰度,中国土壤中溴、碘普遍得到了富集,溴、碘含量分异变化较大,并具有明显的地域分异特征,影响中国土壤中溴、碘含量的主要因素是降水量、土壤吸附体的含量以及某些特殊母质。

THE BACKGROUND VALUE OF BRO- MON AND IODINE IN CHINA SOILS

The background value levels of Bromine and londinc in China soils as well as in each type soils arc obtained through the analycsc and determination of more than eight hundred superficial soil samples which arc collected from around the country.Conlrastion with the common abundance of Br and I in the earths crust, they arc generously accumulated in the soils.Thc range of their content variation is wide and their distribution shows clear region-change fcaturcs.The main factors affecting their content in the soils arc prccipilalion,soil absorbent and some special parent materials.