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poster - International Conference of Agricultural Engineering

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TABLE 2: Devices for collecting <strong>of</strong> pore water in soil<br />

Site Type Cd Cu Pb As Zn Ni Hg Cr6+ Unit<br />

SP 0.17 5.63 4.83 8.77 25.8 4.77 - -<br />

PH PW - 3.12 - - 0.15 0.25 - -<br />

D - 0.02 - - 0.02 - - -<br />

SP 1.11 14.7 15.79 4.06 99.83 11.29 - -<br />

mg/kg(l)<br />

SW SP 0.01 6.55 0.07 0.06 1.03 0.35 - -<br />

D - - - - 0.13 0.03 0.009 0.29<br />

SP : soil particles ; PW : pore water ; D : dilution water<br />

The values in the Table 2 are expressed as the graph in Fig. 5.<br />

(a) PH<br />

(b) SW<br />

FIGURE 5: The graphs <strong>of</strong> degree <strong>of</strong> contamination<br />

The copper ion was higher ratio than any other heavy metals in pore water as compared with<br />

soil particles as shown in Fig. 5. The copper tends to be ionized more readily and thus it<br />

could affect the growth <strong>of</strong> crops. Therefore, it is important to measure the concentrations <strong>of</strong><br />

copper in pore water as well as soil solid in order to understand their relationship each other.<br />

4. Conclusions<br />

The pore water was sampled from two site soil samples by squeezing method, measured<br />

heavy metals contents by AAS and ICP method in lab and compared heavy metals contents<br />

with soil particle and dilution water. As a result, it was found that copper ions were higher<br />

ratio detected than any other heavy metal in pore water. It seems that the copper ions are<br />

more hydrophilicity matter than other metals. This result shows that concentration <strong>of</strong> copper<br />

ion in pore water can estimate concentration <strong>of</strong> copper in soil. This study will help estimate<br />

the level <strong>of</strong> soil solid contamination using the analysis <strong>of</strong> heavy metal contents in pore water.

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