化工厂区域土壤中砷的化学形态与分布特征

CHEMICAL STATE AND DESTRIBUTION CHARACTERISTICS OF As IN SOILS ON CHEMICAL PLANT SECTION

本文通过对大连化工厂区域土壤样品中砷的水溶态、碳酸铵交换态、盐酸溶解态、氢氧化钠溶解态、残渣态的析,以及各种形态中三价、五价砷的测定,评价该区砷的分布特征和污染现状,为研究砷在环境中的迁移规律和污染防治提供科学依据.

By analyzing soil samples from Dalian Chemical Plant section, the paper studied As in various chemical states, such as water dissoloved staete, ammonium carbonate exchanged state, hydrochloric acid dissoloved state, sodium hydroxide dissoloved and residual state,and also determined the concentration of As3+, As5+ in these chemical states. As a result it extended to evaluate distribution characteristics and presented pollution situation of As in the section. The scientific basis for studying the migrating law and the prevention, as well as control of As in the environment were provided in this paper.