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| 湖泊沉积物中有机磷酸酯阻燃剂污染特征及生态风险评价 |
| Pollution Characteristics and Ecological Risk Assessment of Organophosphorus Flame Retardants in Lake Sediments |
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| DOI： |
| 中文关键词: 有机磷酸酯阻燃剂 污染特征 生态风险评价 沉积物 城市湖泊 广州 |
| 英文关键词: Organophosphorus flame retardants Pollution characteristic Ecological risk assessment Sediment Urban lake Guangzhou |
| 基金项目:广东省普通高校青年创新人才类基金资助项目（2018GkQNCX039）；广东省高职院校高水平专业群：环境监测技术专业群基金资助项目（GSPZYQ2020004）；广东省高等职业教育品牌专业建设项目“环境监测与控制技术”基金资助项目 |
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| 中文摘要: |
| 利用气质联用仪（GC-MS）检测广州15个城市湖泊表层沉积物中16种有机磷酸酯阻燃剂（OPFRs）含量，分析其分布特征及来源，并评价其生态风险。结果表明，广州15个城市湖泊沉积物中16种 OPFRs总质量比（∑16OPFRs）范围为138ng/g～306ng/g，平均值为203ng/g，污染属于中等水平。TBEP、TCEP、TBP、TDCP为主要OPFRs，其中TBEP值最高。相关性研究表明，大部分OPFRs单体与总有机碳无显著相关性，OPFRs来源具有点源性特征。主成分分析表明，沉积物中 OPFRs 来源并不单一，游客产生的废弃塑料、大气沉降、污水排放、路面径流及污泥再利用等都可能成为其来源。生态风险评价表明，沉积物中OPFRs存在一定的生态风险。 |
| 英文摘要: |
| The content of 16 organophosphorus flame retardants (OPFRs) in surficial sediments from 15 urban lakes in Guangzhou was detected by Gas Chromatography-Mass Spectrometry(GC-MS). The distribution characteristics and sources were analyzed, and the ecological risks were evaluated. The results revealed that the total mass ratio of the 16 OPFRs(∑16OPFRs) in sediments of 15 urban lakes in Guangzhou ranged from 138 ng/g to 306 ng/g, with an average of 203 ng/g, indicating a moderate level of pollution. TBEP, TCEP, TBP and TDCP were the main OPFRs, among which TBEP was the highest. Correlation analysis showed that most OPFRs monomers had no significant correlation with total organic carbon. The source of OPFRs had the characteristics of point source. Principal component analysis indicated that the source of OPFRs in sediments was not single. Waste plastics generated by tourists, atmospheric deposition, sewage discharge, road runoff and sludge reuse might be the sources. The ecological risk assessment showed that OPFRs in sediments had certain ecological risks. |
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