十多年来,在评价农业环境时,惯以土壤“总汞”量来表明土壤的汞污染程度,并进一步做为估计粮食含汞量的间接判据。事实上,汞在自然环境中的迁移十分复杂,在土壤中它以多种形态存在着,其中能够进入植物体的仅是称作“可给态”的一部分,无疑这一部分的迁移性较强,本文暂称之为“可溶性汞”。本工作试图探求其测定方法,并在评价农业环境上,用它来代替过去习用的“总汞”。 For more than a decade, in assessing agro-environments, soil “total mercury” has been used to indicate soil mercury contamination and further as an indirect criterion for estimating the mercury content of food. In fact, the migration of mercury in the natural environment is very complicated. In the soil, it exists in various forms. Only the part that can enter the plant body is called the “giveable state.” This part is undoubtedly more migratory , This article tentatively referred to as “soluble mercury.” This work attempts to explore its determination method, and in evaluating the agricultural environment, use it to replace the conventional “total mercury.”