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by 01100011
1034 days ago
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From the paper(https://www.tandfonline.com/doi/full/10.1080/19440049.2023.2...): > PFAS were detected in almost all paper-based straws, with highly variable concentrations between brands, ranging from < LOQ(level of quantification) to 7.15 ng/g (Figure 1). PFOA was the most frequently detected component. Specific concentrations can be found in Supplementary Table A3. In the other types of straws, more often all PFAS were below the LOQ. In bamboo straws, PFAS were detected in the range < LOQ to 3.47 ng/g in four out of five brands. In glass straws two brands showed concentrations above the LOQ, ranging from < LOQ to 6.65 ng/g, while the concentrations for the other brands were found to be below the LOQ. In the stainless steel straws, no PFAS concentrations above the LOQ were observed in any of the brands. Finally, three out of four plastic straw brands contained quantifiable PFAS concentrations, ranging from < LOQ to 0.924 ng/g. There was a significant variation in PFAS profiles between straws from the same materials. This variation, in combination with the relatively small dataset, made it impossible to compare statistically the materials and continent of origin (CO) for each PFAS individually. Therefore, we used the ΣPFAS concentrations instead. Is this a lot? What do these levels mean? "Detectable" isn't really a useful threshold for many chemicals. Also, how much of these chemicals am I likely to ingest? Does it depend on the type of drink, it's temperature and chemistry? |
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maximum contaminant level [MCL]. Straw weighs around .42 grams. I am not to concerned about the upper end of 7.15 ng/g contamination. By all means worry about PFAS if you wish, but straws really don't look like the problem.