On October 31, 2019, Christia, Christina; Tang, Bin; Yin, Shan-Shan; Luo, Xiao-Jun; Mai, Bi-Xian; Poma, Giulia; Covaci, Adrian published an article.Recommanded Product: Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate The title of the article was Simultaneous determination of legacy and emerging organophosphorus flame retardants and plasticizers in indoor dust using liquid and gas chromatography-tandem mass spectrometry: method development, validation, and application. And the article contained the following:
A method was developed and validated to simultaneously detect and quantify 19 organophosphorus flame retardants (PFR/ePFR; 14 legacy, 5 emerging) and 20 plasticizers (7 legacy [LP], 13 alternative plasticizers [AP]). Sample preparation was based on combining previously validated anal. protocols, including ultrasonic extraction and Florisil fractionation/clean-up. The anal. was liquid chromatog./tandem mass spectrometry (LC/MS-MS) for all targeted compounds except bis (2-ethylhexyl) phthalate (DEHP) and bis (2-ethylhexyl) terephthalate (DEHT), for which isomer separation resulted in more favorable gas chromatog./electron ionization/mass spectrometry (GC-EI-MS) anal. This method was validated using two levels of analyte fortification in dust. Achieved linearity (R2) was 0.993-0.999. Limits of detection and quantification (LOD, LOQ) were 1-265 ng/g and 1-870 ng/g for all analytes, resp., except DEHP and DEHT, for which relatively higher LOD (665 and 1100 ng/g) and LOQ (2100 and 3500 ng/g) resp., were observed Accuracy was 75-125% for most of analytes; repeatability was good with relative standard deviation <15% for most compounds The method determined/quantified targeted analytes in house dust (n = 10) from Guangzhou, China. Median concentrations were 3-210 ng/g for PFR, 4-165 ng/g for ePFR, 30-100,000 ng/g for LP, and 6-34,000 ng/g for AP. Main contributors to total contamination were LP (63%) and AP (37%) in total plasticizers; PFR and ePFR contributed 90 and 10% of total flame retardants. The experimental process involved the reaction of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate(cas: 3319-31-1).Recommanded Product: Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate
The Article related to environmental analysis, fire-resistant materials (organophosphorus), fireproofing agents (organophosphorus), fractionation (analyte florisil), gas chromatography (mass spectrometry and), household dust, liquid chromatography-tandem mass spectrometry, plasticizers, ultrasonication (vortexing and, extraction method) and other aspects.Recommanded Product: Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate
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