2014-2018年四川省广汉市农用地土壤中铬、铅、镉含量监测结果分析
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摘要
目的通过监测广汉市农用地土壤中铬、铅、镉含量情况,提供保护和改善土壤环境依据。方法 2014-2018年对广汉市5个乡镇20个村的100份农用地土壤中铬、铅、镉分别按照《土壤中铬的测定火焰原子吸收分光光度法》(HJ 491-2009)和《土壤质量铅、镉的测定石墨炉原子吸收分光光度法》(GB/T 17141)进行监测,依据《土壤环境质量农用地土壤污染风险管控标准(试行)》(GB 15618-2018)分析评价农用地土壤存在风险。结果广汉市农用地土壤中铬检测结果范围23.7～115.1 mg/kg,铅检测结果范围11.9～73.1 mg/kg,镉检测结果范围0.12～1.10 mg/kg,100份农用地土壤铬、铅检测结果均低于农用地土壤风险筛选值;41%的土壤样品镉检测结果高于农用地土壤风险筛选值,低于风险管制值。结论广汉市农用地土壤中铬、铅污染风险低,镉污染高于农用地土壤风险筛选值,存在风险,职能部门应高度重视并加强土壤中镉污染监测,开展土壤污染综合防治。
Objective To investigate the content of chromium, lead and cadmium in agricultural soil of Guanghan City, so as to provide scientific references for protecting and improving soil environment. Methods According to the Soil quality-determination of total chromium-flame atomic absorption spectrometry(HJ 491-2009) and the Soil quality-determination of lead and cadmiumgraphite furnace atomic absorption spectrometry(GB/T17141),100 samples of farmland soil collected from 20 administrative villages in five townships were tested in 2014-2018. The soil contamination risk of agricultural land were evaluated based on the criteria of Soil environmental quality-Risk control standard for soil contamination of agricultural land(trial implementation)(GB15618-2018). Results The content of chromium in farmland soil was 23.7-115.1 mg/kg, the content of lead was 11.9-73.1 mg/kg, and the content of cadmium was 0.12-1.10 mg/kg in Guanghan.Results of the content of chromium and lead in100 samples of farmland soils were lower than risk screening values. Results of the content cadmium in 41 of soil samples were higher than risk screening values, but were lower than risk intervention values. Conclusion The risk of chromium and lead in soil contamination of agricultural land is low in Guanghan. The content of cadmium is higher than soil risk screening values, and there are potential risks for cadmium pollution.Functional departments should attach great importance to the monitoring of cadmium contamination in soil and carry out comprehensive prevention and control of soil contamination.
Objective To investigate the content of chromium, lead and cadmium in agricultural soil of Guanghan City, so as to provide scientific references for protecting and improving soil environment. Methods According to the Soil quality-determination of total chromium-flame atomic absorption spectrometry(HJ 491-2009) and the Soil quality-determination of lead and cadmiumgraphite furnace atomic absorption spectrometry(GB/T17141),100 samples of farmland soil collected from 20 administrative villages in five townships were tested in 2014-2018. The soil contamination risk of agricultural land were evaluated based on the criteria of Soil environmental quality-Risk control standard for soil contamination of agricultural land(trial implementation)(GB15618-2018). Results The content of chromium in farmland soil was 23.7-115.1 mg/kg, the content of lead was 11.9-73.1 mg/kg, and the content of cadmium was 0.12-1.10 mg/kg in Guanghan.Results of the content of chromium and lead in100 samples of farmland soils were lower than risk screening values. Results of the content cadmium in 41 of soil samples were higher than risk screening values, but were lower than risk intervention values. Conclusion The risk of chromium and lead in soil contamination of agricultural land is low in Guanghan. The content of cadmium is higher than soil risk screening values, and there are potential risks for cadmium pollution.Functional departments should attach great importance to the monitoring of cadmium contamination in soil and carry out comprehensive prevention and control of soil contamination.
引文
[1]张勇,张洁,兰洁.2014年仁寿县农村土壤铅、铬和镉含量调查与分析[J].中国卫生产业,2015(11):161-162.
[2]HJ 491-2009土壤总铬的测定火焰原子吸收分光光度法[S].2009.
[3]GB/T 17141-1997土壤质量铅、镉的测定石墨炉原子吸收分光光度法[S].1997.
[4]GB 15618-2018《土壤环境质量农用地土壤污染风险管控标准(试行)》[S].2018.
[5]蓝海,刘明书.2011-2013年四川省广汉市农村土壤中铅和镉含量监测结果[J].预防医学情报杂志,2015(5):384-386.
[6]金立坚,李向龙,印悦,等.2011年四川省农村土壤中铅和镉含量调查[J].环境与健康杂志,2012,29(12):1112-1115.
[7]张旭辉,熊庆,栗旸.云南农田土壤中铅、镉、铬水平及分布规律[J].环境与职业医学,2019(3).
[8]庞荣丽,王瑞萍,谢汉忠,等.农业土壤中镉污染现状及污染途径分析[J].天津农业科学,2016,22(12):87-91.
[9]钱蜀,王英英,向秋实.德阳市农用地土壤中镉的分布特征及异常来源分析[J].中国环境监测,2014,30(2):80-84.
[10]杨云帆,夏卫生,王小芳.镉污染农田的不同修复技术现状及展望[J].中国农业信息,2017(23):49-51,84.
[11]邱胤轩,杨丽梅,黄松涛,等.协同萃取法分离和回收废水中重金属离子的研究现状[J].稀有金属,2015,39(8):749-758.
[2]HJ 491-2009土壤总铬的测定火焰原子吸收分光光度法[S].2009.
[3]GB/T 17141-1997土壤质量铅、镉的测定石墨炉原子吸收分光光度法[S].1997.
[4]GB 15618-2018《土壤环境质量农用地土壤污染风险管控标准(试行)》[S].2018.
[5]蓝海,刘明书.2011-2013年四川省广汉市农村土壤中铅和镉含量监测结果[J].预防医学情报杂志,2015(5):384-386.
[6]金立坚,李向龙,印悦,等.2011年四川省农村土壤中铅和镉含量调查[J].环境与健康杂志,2012,29(12):1112-1115.
[7]张旭辉,熊庆,栗旸.云南农田土壤中铅、镉、铬水平及分布规律[J].环境与职业医学,2019(3).
[8]庞荣丽,王瑞萍,谢汉忠,等.农业土壤中镉污染现状及污染途径分析[J].天津农业科学,2016,22(12):87-91.
[9]钱蜀,王英英,向秋实.德阳市农用地土壤中镉的分布特征及异常来源分析[J].中国环境监测,2014,30(2):80-84.
[10]杨云帆,夏卫生,王小芳.镉污染农田的不同修复技术现状及展望[J].中国农业信息,2017(23):49-51,84.
[11]邱胤轩,杨丽梅,黄松涛,等.协同萃取法分离和回收废水中重金属离子的研究现状[J].稀有金属,2015,39(8):749-758.