Benzophenone-UV filters in personal care products and urine of schoolchildren from Shenzhen, China: Exposure assessment and possible source

Sci Total Environ. 2018 Nov 1:640-641:1214-1220. doi: 10.1016/j.scitotenv.2018.06.015. Epub 2018 Jun 7.

Abstract

The use of benzophenone (BP)-type UV filters in personal care products (PCPs) has rapidly increased in China over the past decade, leading to growing concerns on the potential adverse effects associated with the usage. Urine analysis is an ideal non-invasive approach for human biomonitoring of xenobiotics that are excreted mainly through urinary system. To investigate human exposure of PCPs to children from South China, we determined BP-type UV filters in a total of 156 commercial PCP goods covering 11 categories, as well as 280 urine samples collected from elementary school students in Shenzhen, China. Five BP analogues (i.e., BP1, BP2, BP3, BP8, and 4HB) were frequently detected in both PCPs and urine, among which BP3 was the dominant analogue, accounting for 96.3% of the total BPs in PCPs and 53.2% in urine, respectively. Sunscreens contained the highest BP concentrations (mean: 2.15 × 104 ng g-1) among all PCP goods. Girls exhibited higher urinary BP concentrations than boys, and body mass index positively influenced BP concentrations. However, no regional difference in urinary BP concentration was observed. The estimated dermal uptake of BPs from PCPs after considering the percutaneous absorption rates was much lower than the estimated dermal intake. The total daily excretion doses estimated from urinary BPs were 74.4 and 47.4 ng·kg-1bw day-1 for girls and boys, respectively. The higher usage of body lotions, hand lotions, and sunscreens by girls than boys (1.49 vs. 1.03 times week-1) might play an important role.

Keywords: Benzophenone-type UV filter; Dermal intake; Dermal uptake; Personal care products; Urine.

MeSH terms

  • Benzophenones / urine*
  • Body Mass Index
  • Child
  • China
  • Cosmetics / metabolism*
  • Environmental Exposure / statistics & numerical data*
  • Environmental Monitoring
  • Environmental Pollutants / urine*
  • Female
  • Humans
  • Male
  • Sunscreening Agents / metabolism*

Substances

  • Benzophenones
  • Cosmetics
  • Environmental Pollutants
  • Sunscreening Agents