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| POLLUTION SITUATION AND DISTRIBUTION MIGRATION OF HEAVY METALSIN SOIL OF LELING-ESTUARY AREA, SHANDONG PROVINCE |
| WANG Cun-long, ZHAO Xi-qiang, JIANG Wen-hui, YU Chao, WANG Hong-jin, LIU Hua-feng |
| Shandong Geological Survey Institute, Jinan 250013, China |
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Abstract A study of the distribution and migration regularity of heavy metals in Leling-estuary area of Shandong Province shows that the soil of the study area belongs mainly to the clean area, that the mild pollution possesses the largest proportion in the polluted area, and that medium and heavy pollution possesses 0.57% of the whole study area. Pollution factors are mainly Cd, Hg and Pb. Industrial waste water is the main source of soil pollution. The wheat straw in the polluted area is obviously enriched with Cd and Hg, whose values are close to or exceed the Cd and Hg content of the root system soil and are lowest in seeds. The wheat seeds are evidently enriched with Se aned Zn. Cd and Hg are distributed mainly in stable state in root system soil, and the content of active state Cd and Hg is very low. The insignificant activation migration quantity is closely related to the alkaline environment of the study area.
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Received: 08 March 2011
Published: 10 June 2012
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