ArticleAnalytical and bioanalytical chemistry2025
Gas chromatography-triple quadrupole mass spectrometry method for analysis of polychlorinated dibenzo-p-dioxins, dibenzofurans: evaluation and application to sediment samples.
Article in Analytical and bioanalytical chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A study was conducted to validate the gas chromatography-triple quadrupole mass spectrometry (GC-QqQ-MS) method as a cost-effective method for the analysis of polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) in sediment samples. The instrument sensitivity for 17 PCDD/Fs congeners was determined to be in the range of 0.201 to 1.45 ng/mL. The four-point calibration curve exhibited high linearity, with the mean relative response factors (RRFs) for PCDD/Fs ranging from 0.81 to 1.88, and RSD < 20% met the analytical requirements of the standard method for gas chromatography combined with high-resolution mass spectrometry (GC-HRMS). The quantification limit of PCDD/Fs in sediments analyzed by the GC-QqQ-MS method was demonstrated to be 2 to 21 times higher than that of the GC-HRMS method. The results of PCDD/Fs concentration analysis in sediment matrix for 1 certified reference material sample, 3 international proficiency test samples, and 29 marine sediment samples between the two analytical methods showed a relatively good agreement, with a relative difference of ± 25%. Furthermore, the gas chromatography method using triple quadrupole mass spectrometry can be regarded as a viable alternative to high-resolution mass spectrometry for sediment samples with total mass concentrations of PCDD/Fs in the 500-1000 pg/g range, and especially areas at risk of PCDD/Fs contamination.
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