Presence of Polychlorinated Biphenyls (PCBs) in Bottled Drinking Water in Mexico City
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- Salinas, R.O., Bermudez, B.S., Tolentino, R.G. et al. Bull Environ Contam Toxicol (2010) 85: 372. doi:10.1007/s00128-010-0105-y
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This paper describes the concentrations of seven polychlorinated biphenyls (PCBs) in bottled drinking water samples that were collected over 1 year from Mexico City in two sizes (1.5 and 19 L), using gas chromatography with an electron capture detector. PCBs 28 (0.018–0.042 μg/L), 52 (0.006–0.015 μg/L) and 101 (0.001–0.039 μg/L) were the most commonly found and were present in the majority of the samples. However, total concentrations of PCBs in bottled drinking water (0.035–0.039 μg/L) were below the maximum permissible level of 0.50 μg/L stated in Mexican regulations and probably do not represent a hazard to human health. PCBs were detectable in all samples and we recommend a monitoring program be established to better understand the quality of drinking bottled water over time; this may help in producing solutions for reducing the presence of organic contaminants.