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GEOCHEMICAL STUDY ON SELENIUM IN ROCK-SOIL-PLANT IN NORTHERN LIAONING PROVINCE |
DING Qiu-hong1, TANG Tao2, WANG Ling-guang3, CHEN Shu-wang1, XING De-he1 |
1. Shenyang Center of China Geological Survey, Shenyang 110034, China; 2. Liaoning No.7 Geological Brigade Co., Ltd., Dandong 118000, Liaoning Province, China; 3. Liaoning Geological and Mineral Survey Institute Co., Ltd., Shenyang 110032, China |
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Abstract Through the geochemical study of Se in rocks, soils and plants in northern Liaoning Province, the paper analyzes the release-migration-absorption of Se in rock-soil-plant. The results indicate that the average Se content in rocks is 0.08×10-6. For different rock types, the Se contents generally show the rule of volcanic rock > carbonate rock > granite/sedimentary rock > metamorphic rock. Vertically, the Se content shows the variation of soil layer A > soil layer B > pedogenic mother rock. The average Se content in topsoil is 0.24×10-6, with the general pattern of brown soil (A&B layers) > paddy soil (A&B layers) > meadow soil (A&B layers) > aeolian sandy soil (A&B layers); The average Se content in plants is 0.07×10-6, with the soil Se enrichment capacity of plants in the order of weeds > hazelnut > paddy rice > corn. There are significant positive correlations between soil and rice, soil and hazelnut, but no obvious correlations between soil and weeds, soil and corn.
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Received: 02 July 2020
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