有效态砷 AE-As
残渣态砷 Res-As
形态砷 arsenic species
砷形态 combined forms ; arsenic speciation ; Arsenic species
溶解态有机砷 dissolved organic arsenic ; DOAS
地下水砷形态标准物质 Groundwater arsenic speciation Reference Material
砷形态分析 arsenic speciation analysis
砷形态分布 distribution of As forms
砷价态分布 arsenic chemical value
采用液态的叔丁基砷 tertiarybularsine ; TBAS
硅酸盐态砷主要进入粘土矿物晶格。
Arsenic of silicate mainly comes into crystal lattice of clay minerals.
当前还难以确认有机态砷的化学结构。
However, chemical structure of organic arsenic in coal is still unclear currently.
由手铅、砷污染元素呈偏态分布，故采用偏态分布中的中位数法作了铅、砷自然背景值及含量的统计。
As lead and arsenic pollution element are skew distribution, statistics of a natural background value and a content of lead and arsenic are worked out using median method of skew distribution.
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