Advancing towards universal screening for organic pollutants in waters

JOURNAL OF HAZARDOUS MATERIALS

卷:282

Article

Hernandez, Felix¹  Ibanez, Maria¹  Portoles, Tania¹  Cervera, Maria I.¹  Sancho, Juan V.¹  Lopez, Francisco J.¹ 

[1] Univ Jaume 1, Res Inst Pesticides & Water, E-12071 Castellon de La Plana, Spain

关键词: Liquid chromatography;    Gas chromatography;    Quadrupole time of flight mass;    spectrometry;    Universal screening;    Water samples;    Organic micropollutants;   

DOI  :  10.1016/j.jhazmat.2014.08.006

来源: Elsevier

【 摘 要 】

Environmental analytical chemists face the challenge of investigating thousands of potential organic pollutants that may be present in the aquatic environment. High resolution mass spectrometry (HRMS) hyphenated to chromatography offers the possibility of detecting a large number of contaminants without pre-selection of analytes due to its accurate-mass full-spectrum acquisition at good sensitivity. Interestingly, large screening can be made even without reference standards, as the valuable information provided by HRMS allows the tentative identification of the compound detected. In this work, hybrid quadrupole time-of-flight (QTOF) MS was combined with both liquid and gas chromatography (using a single instrument) for screening of around 2000 compounds in waters. This was feasible thanks to the use of atmospheric pressure chemical ionization source in GC. The screening was qualitatively validated for around 300 compounds at three levels (0.02, 0.1, 0.5 mu g/L), and screening detection limits were established. Surface, ground water and effluent wastewater samples were analyzed, detecting and identifying a notable number of pesticides and transformation products, pharmaceuticals, personal care products, and illicit drugs, among others. This is one of the most universal approaches in terms of comprehensive measurement for broad screening of organic contaminants within a large range of polarity and volatility in waters. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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