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When Good Intentions Go BadFalse Positive Microplastic Detection Caused by Disposable Gloves

Witzig, Cordula S ; Földi, Corinna ; Wörle, Katharina ; Habermehl, Peter ; Pittroff, Marco ; Müller, Yanina K ; Lauschke, Tim ; Fiener, Peter ; Dierkes, Georg ; Freier, Korbinian P ; Zumbülte, Nicole

Environmental science & technology, 2020-10, Vol.54 (19), p.12164-12172 [Periódico revisado por pares]

United States: American Chemical Society

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Título:
When Good Intentions Go BadFalse Positive Microplastic Detection Caused by Disposable Gloves
Autor: Witzig, Cordula S ; Földi, Corinna ; Wörle, Katharina ; Habermehl, Peter ; Pittroff, Marco ; Müller, Yanina K ; Lauschke, Tim ; Fiener, Peter ; Dierkes, Georg ; Freier, Korbinian P ; Zumbülte, Nicole
Assuntos: Analytical methods ; Contaminants in Aquatic and Terrestrial Environments ; Contamination ; Ecosystem ; Environmental Monitoring ; Fatty acids ; Fourier transforms ; Gas chromatography ; Gloves ; Humans ; Infrared analysis ; Infrared spectroscopy ; Intention ; Investigations ; Leachates ; Mass spectrometry ; Mass spectroscopy ; Microplastics ; Plastic pollution ; Plastics ; Polyethylene ; Polyethylenes ; Pyrolysis ; Reagents ; Sample preparation ; Sodium ; Sodium dodecyl sulfate ; Sodium lauryl sulfate ; Stearates ; Sulfates ; Water Pollutants, Chemical - analysis
É parte de: Environmental science & technology, 2020-10, Vol.54 (19), p.12164-12172
Descrição: Apart from being considered a potential threat to ecosystems and human health, the ubiquity of microplastics presents analytical challenges. There is a high risk of sample contamination during sampling, sample preparation, and analysis. In this study, the potential of sample contamination or misinterpretation due to substances associated with disposable laboratory gloves or reagents used during sample preparation was investigated. Leachates of 10 different types of disposable gloves were analyzed using Raman microspectroscopy (μ-Raman), Fourier-transform infrared microspectroscopy (μ-FTIR), and pyrolysis–gas chromatography/mass spectrometry (pyr–GC/MS). There appeared to be polyethylene (PE) in almost all investigated glove leachates and with all applied methods. Closer investigations revealed that the leachates contained long-chain compounds such as stearates or fatty acids, which were falsely identified as PE by the applied analytical methods. Sodium dodecyl sulfate, which is commonly applied in microplastic research during sample preparation, may also be mistaken for PE. Therefore, μ-Raman, μ-FTIR, and pyr–GC/MS were further tested for their capability to distinguish among PE, sodium dodecyl sulfate, and stearates. It became clear that stearates and sodium dodecyl sulfates can cause substantial overestimation of PE.
Editor: United States: American Chemical Society
Idioma: Inglês

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When Good Intentions Go BadFalse Positive Microplastic Detection Caused by Disposable Gloves

Witzig, Cordula S ; Földi, Corinna ; Wörle, Katharina ; Habermehl, Peter ; Pittroff, Marco ; Müller, Yanina K ; Lauschke, Tim ; Fiener, Peter ; Dierkes, Georg ; Freier, Korbinian P ; Zumbülte, Nicole

United States: American Chemical Society

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