The change of soluble and ionic heavy metal concentration in soil solution showed that, the activity and plant availability of heavy metals was higher than that of the check.
有机络合剂使得土壤溶液中可溶性与离子态重金属的浓度改变，反映了其活性与可利用性较对照不同。
Pharmacopeia method was used in water soluble extractives and limit test for heavy metals and total ash and acid-insoluble ash to test the quality in Lumbricus from different origin.
采用药典方法分别测定浸出物、总灰分和酸不溶性灰分和进行重金属检查，综合考察不同产地地龙的内在质量。
Metal complexation by water-soluble organic substances may significantly influence the behavior of heavy metals in soil.
水溶解态有机物质与重金属离子的络合反应对土壤重金属化学行为的影响十分显著。
Acid soluble in the upper reaches higher than downstream and migration of heavy metals is strong, while it is poor in the downstream.
上游的重金属总弱酸可提取态要比下游高，可见上游沉积物中重金属的活性和迁移性较强，而下游沉积物中重金属的活性和迁移性较差；
Acid soluble in the upper reaches higher than downstream and migration of heavy metals is strong, while it is poor in the downstream.
上游的重金属总弱酸可提取态要比下游高，可见上游沉积物中重金属的活性和迁移性较强，而下游沉积物中重金属的活性和迁移性较差；
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