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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

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  • NETL
  • NSTL
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  • 维普
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(Σ16OPFRs)范围为138ng/g～306ng/g,平均值为203 ng/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.
Pollution Characteristics and Ecological Risk Assessment of Organophosphorus Flame Retardants in Lake Sediments
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 to-tal mass ratio of the 16 OPFRs(Σ16OPFRs)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.

Organophosphorus flame retardantsPollution characteristicEcological risk assessmentSedi-mentUrban lakeGuangzhou

曹美苑、曾锋

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广东环境保护工程职业学院,广东 佛山 528216

中山大学化学学院,广东 广州 510275

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

广东省普通高校青年创新人才类基金资助项目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广东省高等职业教育品牌专业建设项目

2018GkQNCX039GSPZYQ2020004

2024

环境监测管理与技术
江苏省环境监测中心,南京市环境监测中心站

环境监测管理与技术

CSTPCD北大核心
影响因子：1.086
ISSN：1006-2009
年,卷(期)：2024.36(2)
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