九龙江流域规模化养猪场砷污染状况调查Investigation on Arsenic Contamination in Pig Farms in Jiulongjiang Watershed
建旭平;耿春女;纪文芳;苏玉红;
摘要(Abstract):
对九龙江流域规模化养猪场猪饲料、沼气出液和猪粪中砷的含量进行了测定。猪饲料中砷的含量范围为0.50~7.72mg·kg-1,平均值为3.49mg·kg-1;沼气出液中砷的含量范围为0.47~56.13μg·L-1,平均值为13.45μg·L-1;猪粪中砷的含量范围为0.32~114.46mg·kg-1,平均值为13.45mg·kg-1。同一养猪场,小猪猪粪中的砷含量一般高于大猪和母猪猪粪;沼气出液和猪粪中的砷含量具有一定的相关性。由估算知,养猪场向九龙江流域年排放的砷总量约为821kg。9家养猪场中有2家猪粪和1家沼气出液中砷的含量相对较高,生态风险等级较高,已超过国家相应标准。总之,应该加强养猪业的管理,以防止养猪场对九龙江流域造成砷污染。
关键词(KeyWords): 猪粪;年排放;生态风险评价
基金项目(Foundation): 国家自然科学基金(21107072);; 博士后基金(2012M520408);; 环保公益项目(201109052)
作者(Author): 建旭平;耿春女;纪文芳;苏玉红;
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DOI:
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