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Identification and quantification of selected plastics in biosolids by pressurized liquid extraction combined with double-shot pyrolysis gas chromatography-mass spectrometry.
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-01-24 , DOI: 10.1016/j.scitotenv.2020.136924
Elvis D Okoffo 1 , Francisca Ribeiro 2 , Jake W O'Brien 1 , Stacey O'Brien 1 , Benjamin J Tscharke 1 , Michael Gallen 1 , Saer Samanipour 3 , Jochen F Mueller 1 , Kevin V Thomas 1
Affiliation  

The identification and quantification of selected plastics (polystyrene (PS), polycarbonate (PC), poly-(methyl methacrylate) (PMMA), polypropylene (PP), polyethylene terephthalate (PET), polyethylene (PE) and polyvinyl chloride (PVC)) in biosolids (treated sewage sludge) was performed by pressurized liquid extraction (PLE) combined with double-shot pyrolysis gas chromatography-mass spectrometry. Validation of the method yielded recoveries of between 85 and 128% (mean RSD 11%) at a linear range of between 0.01 and 2 μg. The distribution of plastics within 25 biosolid samples from a single wastewater treatment plant in Australia was assessed. The mass concentration of PE, PVC, PP, PS and PMMA was between 0.1 and 4.1 mg/g dry weight (dw) across all samples, with a total plastic concentration ƩPlastics of between 2.8 and 6.6 mg/g dw (median = 4.1 mg/g dw). PE was the predominant plastic detected (mean concentration of 2.2 mg/g dw), contributing to 50% of the total of all plastics. Overall, this study demonstrates that pressurized liquid extraction (PLE) combined with double-shot pyrolysis gas chromatography-mass spectrometry can be used to identify and quantify PE, PP, PVC, PS, and PMMA in biosolids.

中文翻译:

通过加压液体萃取结合二次热解气相色谱-质谱联用对生物固体中的选定塑料进行鉴定和定量。

鉴定和量化选定的塑料(聚苯乙烯(PS),聚碳酸酯(PC),聚甲基丙烯酸甲酯(PMMA),聚丙烯(PP),聚对苯二甲酸乙二醇酯(PET),聚乙烯(PE)和聚氯乙烯(PVC))生物固体(处理后的污水污泥)中的有机物是通过加压液体萃取(PLE)与二次热解气相色谱-质谱联用而进行的。该方法的验证在0.01至2μg的线性范围内产生了85至128%的回收率(平均RSD为11%)。评估了澳大利亚一家废水处理厂的25种生物固体样品中塑料的分布。所有样品中PE,PVC,PP,PS和PMMA的质量浓度在0.1至4.1 mg / g干重(dw)之间,总塑料浓度Ʃ塑料在2.8至6.6 mg / g dw之间(中位数= 4。1毫克/克dw)。PE是检测到的主要塑料(平均浓度为2.2 mg / g dw),占所有塑料总量的50%。总体而言,这项研究表明,加压液体萃取(PLE)与二次热解气相色谱-质谱联用可用于鉴定和定量生物固体中的PE,PP,PVC,PS和PMMA。
更新日期:2020-01-24
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