@article {189, title = {Long-term trends of fluorotelomer alcohols in a wastewater treatment plant impacted by textile manufacturing industry.}, journal = {Chemosphere}, year = {2022}, month = {2022 Mar 25}, pages = {134442}, abstract = {

Fluorotelomer alcohols (FTOHs) are important precursors and substitutes of perfluoroalkyl carboxylic acids (PFCAs). This study investigated the long-term trends of FTOHs in a municipal wastewater treatment plant impacted by textile manufacturing industry (T-WWTP) in Wuxi city from 2013 to 2021. For comparison, four domestic wastewater treatment plants (D-WWTPs) were also selected for the investigation. The total concentrations of FTOHs, which were 9.8-43 ng/L, 5.9-29 ng/L and 10-50 ng/g in influent, effluent, and sludge samples from the T-WWTP, were significantly higher than those of the D-WWTPs (p \< 0.01). The significant correlation between decrease of mass loads for FTOH and the increase for PFCAs was observed, suggesting the potential biotransformation of FTOHs to PFCAs. Concentration variation in FTOH concentrations was observed for the T-WWTP, which was in accord with the variation in annual output of textile products in Wuxi city (p = 0.005). The predominance of 8:2 FTOH in the influents of T-WWTP between 2013 and 2016 switched over to 6:2 FTOH in 2020-2021. This work highlighted the textile manufacturing industry as a significant discharge route for FTOHs to municipal WWTP, as well as the dramatic change in the usage of FTOHs in the textile manufacturing industry in Wuxi.

}, issn = {1879-1298}, doi = {10.1016/j.chemosphere.2022.134442}, author = {Ma, Chunmeng and Peng, Hui and Chen, Hongrui and Shang, Wei and Zheng, Xingcan and Yang, Min and Zhang, Yu} } @article {82, title = {Relationship between perfluorooctanoate and perfluorooctane sulfonate blood concentrations in the general population and routine drinking water exposure.}, journal = {Environ Int}, volume = {126}, year = {2019}, month = {2019 Feb 15}, pages = {54-60}, abstract = {

In regions with heavily contaminated drinking water, a significant contribution of drinking water to overall human perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) exposure has been well documented. However, the relationship of PFOA/PFOS blood concentrations in the general population to routine drinking water exposure is not well characterized. This study determined the PFOA and PFOS concentrations in 166 drinking water samples across 28 cities in China. For 13 of the studied cities, PFOA and PFOS concentrations were analyzed in 847 human blood samples which were collected in parallel with the drinking water samples. The geometric mean PFOA and PFOS concentrations in drinking water were 2.5 {\textpm} 6.2 ng/L and 0.7 {\textpm} 11.7 ng/L, and population-weighted geometric mean blood concentrations were 2.1 {\textpm} 1.2 ng/mL and 2.6 {\textpm} 1.3 ng/mL, respectively. We found a significant correlation between the PFOA concentration in drinking water and blood (r = 0.87, n = 13, p \< 0.001). The total daily intake of PFOA (0.24-2.13 ng/kg/day) and PFOS (0.19-1.87 ng/kg/day) were back-calculated from the blood concentrations with a one-compartment toxicokinetic model. We estimated relative source contributions (RSCs) of drinking water to total daily intake in China of 23 {\textpm} 3\% for PFOA and 12.7 {\textpm} 5.8\% for PFOS. Using the mean RSCs, we derived the health advisory values of 85 ng/L for PFOA and 47 ng/L for PFOS in China.

}, issn = {1873-6750}, doi = {10.1016/j.envint.2019.02.009}, author = {Zhang, Shiyi and Kang, Qiyue and Peng, Hui and Ding, Mengyu and Zhao, Fanrong and Zhou, Yuyin and Dong, Zhaomin and Zhang, Haifeng and Yang, Min and Tao, Shu and Hu, Jianying} } @article {91, title = {Detection, Occurrence, and Fate of Fluorotelomer Alcohols in Municipal Wastewater Treatment Plants.}, journal = {Environ Sci Technol}, volume = {51}, year = {2017}, month = {2017 Aug 15}, pages = {8953-8961}, abstract = {

Fluorotelomer alcohols (FTOHs) are the most well-known precursors of perfluoroalkyl carboxylic acids (PFCAs), but limited information is available on their occurrence and fate in municipal wastewater treatment plants (WWTPs). The occurrence of FTOHs was investigated in influent, secondary effluent, and sludge of 12 municipal WWTPs in nine cities of China. FTOHs were detected in all WWTPs, and 8:2 FTOH was the predominant congener, with concentrations of 2.10-11.0 ng/L, 3.05-12.4 ng/L, and 0.36-1.91 ng/g dry weight in the influent, secondary effluent, and sludge, respectively. Relatively high proportions of long-chain FTOHs (C) were mainly detected in sludge samples. The mass balance of FTOHs and PFCAs in one of the WWTPs with an anaerobic-anoxic-oxic process was further explored. The decrease of mass loads was observed for 4:2 FTOH (mass change percentage: 21 {\textpm} 3.3\%), 8:2 FTOH (22 {\textpm} 1.5\%), and 10:2 FTOH (29 {\textpm} 7.3\%) through aerobic treatment, while the increase of mass loads was observed for 12 PFCAs from 18 {\textpm} 16\% (perfluorononanoic acid) to 165 {\textpm} 15\% (perfluorobutyric acid)), suggesting the potential biotransformation of FTOHs to PFCAs in the aerobic unit. This work provides the first report on the occurrence of FTOHs in sludge samples of municipal WWTPs and their mass balance and highlights a new emission route to environment via WWTPs.

}, keywords = {Alcohols, China, Cities, Fluorocarbons, Sewage, Waste Water}, issn = {1520-5851}, doi = {10.1021/acs.est.7b00315}, author = {Chen, Hongrui and Peng, Hui and Yang, Min and Hu, Jianying and Zhang, Yu} } @article {116, title = {Simultaneous determination of mono- and disubstituted polyfluoroalkyl phosphates in drinking water by liquid chromatography-electrospray tandem mass spectrometry.}, journal = {J Chromatogr A}, volume = {1227}, year = {2012}, month = {2012 Mar 02}, pages = {245-52}, abstract = {

A sensitive liquid chromatography-electrospray tandem mass spectrometry method was established for the simultaneous determination of five monosubstituted polyfluoroalkyl phosphates (monoPAPs) and eight disubstituted polyfluoroalkyl phosphates (diPAPs) in drinking water. Complete separation and good retention for 13 polyfluoroalkyls phosphates (PAPs) were achieved with a Waters ACUITY UPLC BEH C8 column using a mixture of methanol/water containing 0.1\% NH$_{4}$OH as the mobile phases. Extraction of drinking water samples was performed on weak anion exchange (WAX) cartridges, and the recoveries of target compounds were from 65 to 110\%. The limits of quantization (LOQs) for 13 analytes were in the range of 0.4-40 ng/L. This method was applied to analyze the PAPs in drinking water samples from three cities in China. Of the 13 PAPs, six PAPs including 6:2 monoPAP (13.0 ng/L), 8:2 monoPAP (3.6 ng/L), 10:1 monoPAP (4.3-70.3 ng/L), 10:2 monoPAP (1.4-5.6 ng/L), 8:2 diPAP (0.10 ng/L), and 10:1 diPAP (0.8-3.8 ng/L) were detected.

}, keywords = {China, Chromatography, Ion Exchange, Drinking Water, Fluorocarbons, Phosphates, Reproducibility of Results, Sensitivity and Specificity, Solid Phase Extraction, Tandem Mass Spectrometry, Water Pollutants, Chemical}, issn = {1873-3778}, doi = {10.1016/j.chroma.2012.01.004}, author = {Ding, Huanhuan and Peng, Hui and Yang, Min and Hu, Jianying} }