The Total Mass of Per- and Polyfluoroalkyl Substances (PFASs) in California Cosmetics.

Cosmetics make up one of the consumer product categories most widely known to contain perfluoroalkyl and polyfluoroalkyl substances (PFASs), including precursors to perfluorooctanoic acid (PFOA) and other perfluoroalkyl acids (PFAAs). Because of the way cosmetics are used, most of the PFASs present in these products are likely to reach wastewater treatment plants (WWTPs), which suggests that cosmetics may contribute significantly to the load of PFOA and other PFASs at WWTPs. However, the majority of PFASs present as intentional ingredients in cosmetics cannot be quantified with the available analytical methods. To address this issue, we developed a methodology to estimate the total PFAS mass in cosmetics as well as the corresponding mass of total organic fluorine and of fluorinated side chains associated with PFAA precursors, using various ingredient databases and ingredient concentrations reported by manufacturers. Our results indicate that the cosmetics sold in California during a one-year period cumulatively contain 650-56 000 kg of total PFASs, 370-37 000 kg of organic fluorine, and 330-20 000 kg of fluorinated side chains associated with PFAA precursors. Among the 16 product subcategories considered, >90% of the PFAS mass came from shaving creams and gels, hair care products, facial cleansers, sun care products, and lotions and moisturizers, while the sum of all nine makeup subcategories accounted for <3%. Comparing our estimates to available WWTP influent data from the San Francisco Bay Area suggests that cosmetics may account for at least 4% of the precursor-derived PFAAs measured in wastewater. As the first study ever to estimate the total mass of PFASs contained in cosmetics sold in California, our results shed light on the significance of certain cosmetics as a source of PFASs to WWTPs and can inform effective source reduction efforts.

The Use of the Internet for Prevention of Binge Drinking Among the College Population: A Systematic Review of Evidence.

AIMS: There are many consequences of binge drinking compared with light or moderate drinking behaviors. The prevalence rate and intensity of binge drinking is highest among the college-aged population. Given the popularity and high use of the Internet among college students, a novel approach for programming is through Internet-based interventions. The purpose of this study was to conduct a systematic review of Internet-based interventions targeting binge drinking among the college population. METHODS: Eligibility criteria included peer-reviewed articles evaluating Internet-based interventions for binge drinking prevention among college students published between 2000 and 2014. Only English language articles were included. Review articles and articles only explaining intervention pedagogies were not included. After a systematic screening process, a total of 14 articles were included for the final review. Each article was read thoroughly in order to extract the following variables: study design and sample size, average age of participants, underpinning theoretical framework, and intervention description and duration. This review also synthesized a methodological assessment with variables such as outcome measures, sample size justification, number of measurements and use of process evaluations. RESULTS: All studies but one reported a significant reduction in the frequency and quantity of alcohol consumption and problems related with heavy drinking. Furthermore, Internet-based interventions appeared to be more effective than traditional print-based interventions; however, face-to-face interventions were typically more effective. CONCLUSIONS: This review supports using the Internet as a brief intervention approach that can effectively support efforts to reduce binge drinking among college students.