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首页> 外文会议>2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring >Assessment of Heavy Metal and Herbicide Levels in Soil and Plant Products from Agricultural Area of Tieling District, Liaoning Province, China
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Assessment of Heavy Metal and Herbicide Levels in Soil and Plant Products from Agricultural Area of Tieling District, Liaoning Province, China

机译：辽宁省铁岭区农业区土壤和植物产品中重金属和除草剂水平的评估

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摘要

This study was aimed to assess the levels of selected heavy metals and herbicides in soils under different land usage and plant products from an agricultural area of Tieling district, Liaoning Province, China. Cd, Pb, atrazine, acetochlor and butachlor were analyzed from maize, paddy and vegetable field. Cd concentrations in 40% of vegetable soils and 6.67% of rice soils were higher than ¡°Environmental quality standard for soils¡± (GB15618-1995), respectively. Cd concentrations in20% of vegetable samples were higher than ¡°Pollution-Freevegetables standard¡± (GB18406.1-2001) and Pb concentrations of all vegetable samples were lower than the standard. The Cd concentrations in maize and rice samples did not exceed¡°Maximum levels of contaminants in foods¡±(GB2762-2005), Pb concentrations in 26.7% of maize samples and 13.3% of rice samples were higher than levels. The vegetables affected by Cd pollution were more serious than maize and rice, but the latter affected by Pb pollution were more serious than the former. Residues of three herbicides were detected in soils, with levels lower than the relevant limit. The residue levels of atrazine, acetochlor and butachlor in soils were vegetable soil> maize soil> paddy soil, maize soil> vegetable soil> paddy soil, paddy soil > vegetable soil > maize soil, separately. Atrazine was detected in all vegetable samples due to high application rates of previous periods in vegetable. Acetochlor and butachlor were detected in rice samples, with levels lower than the relevant limit. Detection rate (83.7%) of acetochlor was much higher than that (10.0%) of butachlor. Detection values of butachlor in rice were 1.92, 2.60 and 3.99ƒÊg.kg-1, respectively. The content of atrazine, acetochlor and butachlor in rice and vegetable should be monitored con--tinuously, as they are well known to be persistent and accumulative chemicals.
机译：这项研究旨在评估来自中国辽宁省铁岭区农业区不同土地利用和植物产品下土壤中重金属和除草剂的选择水平。从玉米，水稻和蔬菜领域对镉，铅，阿特拉津，乙草胺和丁草胺进行了分析。 40％的蔬菜土壤和6.67％的水稻土壤中的镉含量分别高于《土壤环境质量标准》（GB15618-1995）。蔬菜样品中20％的镉含量高于《无公害蔬菜标准》（GB18406.1-2001），所有蔬菜样品中的铅含量均低于标准。玉米和大米样品中的镉含量不超过“食品中污染物的最大含量”（GB2762-2005），玉米样品中26.7％的铅和大米样品中的13.3％的铅含量均高于该水平。受Cd污染影响的蔬菜比玉米和水稻严重，但受Pb污染影响的蔬菜比前者和严重。在土壤中检测到三种除草剂的残留，其含量低于相关限值。土壤中of去津，乙草胺和丁草胺的残留量分别为菜地>玉米土>稻田土，玉米土>菜土>稻田土，稻田土>菜土>玉米土。由于前期在蔬菜中的大量施用，因此在所有蔬菜样品中均检出了去津。大米样品中检出乙草胺和丁草胺，含量低于相关限值。乙草胺的检出率（83.7％）远高于丁草胺的检出率（10.0％）。大米中丁草胺的检测值分别为1.92、2.60和3.99μg.kg-1。应当监测大米和蔬菜中阿特拉津，乙草胺和丁草胺的含量。 -- 众所周知，它们是持久性和累积性化学品。

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