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KMID : 0903519850280020076
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1985 Volume.28 No. 2 p.76 ~ p.81
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Behavior of Cadmium , Zinc , and Copper in Soils
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Abstract
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Miscible displacement techniques were used to investigate the influence of the organic matter treatment on the mobility of Cd, Zn, and Cu through soil columns.
Tite heavy metals moved most readily through the Bonryang soil(Typic Udifluvents) of relatively low in CEC, pH, and organic matter content. Most parts of Cd and Zn eluted within 7 pore volumes, but Cu eluted between 5 and 15 pore volumes.
Although the Gangseo soil(Aquatic Eutrochrepts) had lower in CEC and organic matter content than the Gyorae soil(Typic Distrandepts), the heavy metals moved faster through the Gyorae soil than through the Gangseo soil. Cu eluted more slowly and in smaller quantities than Cd and Zn from the Bonryang soil, but did not elute from the Gangsao and the Gyorae soils at all during the experimental period.
The mobility of the heavy metals from the Bonryang and the Gangseo soils was in the order of Cd$gt;Zn$gt;Cu, but that of the Gyorae soil was in the order of Zn$gt;Cd$gt;Cu.
Cd and Zn eluted after 5 and 20 pore volumes respectively, from the Bonryang soil treated with 3% compost but Cu did not elute even after 30 pore volumes were collected. By 7% compost treatment only small amountssof Cd eluted after 20 pore volumes. The liming of the Bonryang soil retarded the mobility of Cd, Zn, and Cu.
Humic acid treatment did not reduce the mobility of the Cd and Zn to tile extent observed in the Bonryang soil with compost, but reduced a little mobility of Cu.
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