Activity-based exposure levels and lifetime cancer risk for workers exposed to polychlorinated biphenyls during electronic waste dismantling in Buriram province, Thailand

Thongkaow, Pattida; Prueksasit, Tassanee; Siriwong, Wattasit

doi:10.1016/j.atmosenv.2022.119289

Cited by 2 publications

(1 citation statement)

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“…However, PCBs are highly toxic to humans and may lead to severe health disorders; e.g., neurotoxicity, reproductive and developmental toxicity, and carcinogenic effects [ 15 , 16 , 17 , 18 ]. They are also lipophilic and highly persistent [ 19 ] and can bioaccumulate in the human body through the food chain [ 20 , 21 , 22 ] and inhalation [ 23 ]. While most countries prohibited the production of PCBs in the late 1970s, PCB legacy materials (e.g., paints, coatings, and plastics) and new materials containing PCBs from pigments with distinct congener pattern continue to be a source of environmental release [ 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

A Facile and Rapid Strategy for Quantifying PCBs in Cereals Based on Dispersive Solid-Phase Extraction and Gas Chromatography–Mass Spectrometry: A Reference for Safety Concerns in Sustainable Textiles

Liu

Song

Wang³

et al. 2023

Materials

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Cereals and their derivative products such as starch and cyclodextrin are significant natural materials for sustainable textile processing (e.g., sizing, dispersing, etc.). However, the contamination of cereals with polychlorinated biphenyls (PCBs) is often neglected, which has led to increasing concerns due to the adverse effects on end users. Therefore, monitoring PCBs in cereals is of great importance in preventing health risks. However, high starch, protein, and fat contents make cereals a complicated matrix and can challenge the analysis of PCBs in cereals. This work describes a facile and rapid strategy for quantifying 18 PCBs in cereals that included corn, wheat, and rice through dispersive solid-phase extraction and gas chromatography with mass spectrometry. Importantly, this was the first time that carboxyl-modified, multi-walled carbon nanotubes were incorporated in the detection of PCBs in cereals. The influences of several parameters on the extraction and clean-up efficiency were investigated; these included the type and volume of extraction solvent, sonication time, and the type and dosage of the adsorbent. The matrix effects on quantification were also evaluated. This approach exhibited a better clean-up performance. All the analytes showed weak matrix effects, and thus a solvent standard plot could be prepared for their quantification. Spiking experiments in the selected matrices at three concentration levels from 0.5 to 10 μg/kg resulted in satisfactory recoveries that ranged from 79.2% to 110.5% with relative standard deviations (RSDs; n = 6) less than 10.3%. The limits of detection (LODs) and quantification (LOQs) ranged from 0.04 to 0.1 μg/kg and 0.1 to 0.4 μg/kg, respectively. The practical application of this method was investigated by analyzing actual cereal samples, which demonstrated that the proposed approach was a facile and efficient strategy for PCB determination and provided a reference for the safety evaluation of sustainable textiles. The method also could be generalized to other troublesome samples for testing of multiple PCBs.

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