摘要
串联极性和非极性固相萃取柱对太子河中游水样进行富集,应用气相色谱-质谱联用仪(GC-MS)定量测定了近百种有机污染物,结果显示,太子河中游河段污染物种类繁多,苯系烃浓度为1.77~11.20μg/L;常见多环芳烃(PAHs)总浓度为2.72~13.89μg/L,与国内污染较重水体中的浓度相当;一元苯酚总浓度为8.31~20.86μg/L,部分超过国家《地表水环境质量标准》(GB 3838-2002)Ⅳ类水限值;硝基苯类物质虽未超过国家GB 3838-2002限值,但普遍高于国家其他水体浓度。应用改进潜在风险指数法筛选出40种优先控制污染物,其中萘、荧蒽、间甲酚、对硝基甲苯为中国水中优先控制污染物黑名单中物质;PAHs来源解析显示,PAHs主要来源于化石燃料燃烧和石油源。
The water samples of Taizihe River were prepared using polar and nonpolar solid phase extraction column con-nected in series and about 100 organic contaminants were quantitatively determined by gas chromatography-mass spectrogra-phy(GC-MS).The data show that the organic pollutants in Taizihe River are varied. The concentration of benzene hydrocar-bons is 1.77~11.20 μg/L. The total concentration of common polycyclic aromatic hydrocarbon(PAHs) is 2.72~13.89 μg/L,approximately equal to the seriously polluted water body in China. The total concentration of monophenols is 8.31~20.86 μg/Land some samples exceed Grade Ⅳ of China Environmental Quality Standard for Surface Water(GB 3838-2002). Nitrobenzenes are below the national standard(GB 3838-2002) but higher than the other water body in China. 40 prior organic pollu-tants are selected applying modified potential hazard index method and naphthalene, fluoranthene, m-cresol and para-nitro-toluene belong to 'China Blacklist of Priority Control Pollutants in Water'. Results of sources apportionment demonstrate that PAHs are derived chiefly from the burning of fossil fuels and petroleum.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2016年第S1期164-168,共5页
Environmental Science & Technology
基金
国家水体污染控制与治理科技重大专项(2012ZX07202-002)
国家自然科学基金面上项目(20977006)
关键词
有机污染物
优先控制污染物
源解析
气相色谱-质谱联用
organic contaminants
priority control pollutants
sources apportionment
gas chromatography-mass spectrography
