Substance flow analysis and assessment of environmental exposure potential for triclosan in mainland China
Journal
Science of the Total Environment
Journal Volume
499
Pages
265-275
Date Issued
2014
Author(s)
Abstract
Triclosan (TCS) is a widely-used antimicrobial agent in many consumer products around the world, and China is a major producer and consumer of TCS. In this study substance flow analysis (SFA) was used to construct a static model of anthropogenic TCS metabolism in China in 2008. The systematic SFA results were used to determine possible exposure pathways and trends in environmental exposure potential through different pathways. TCS discharged in wastewater mainly flowed into surface water sediment, ocean, and soil, where it accumulates in aquatic and agricultural products that may pose a higher risk to human health than brief exposure during consumption. Only 22% of TCS discharged was removed in the built environment with the remainder discharged into the natural environment, indicating that anthropogenic TCS metabolism in China is unsustainable. Per capita TCS consumption increased 209% from 2003 to 2012, resulting in increased discharge and accumulation in the environment. If current trends continue, it will increase to 713mgcapita-1yr-1 in 2015 and 957mgcapita-1yr-1 in 2020. Accordingly, annual environmental exposure potential will increase from 388mgcapita-1 in 2008 to 557mgcapita-1 in 2015 and 747mgcapita-1 in 2020, indicating an increasing trend of exposure to environmental TCS. Results of Pearson correlation analysis suggested that feasible countermeasures to reduce environmental exposure potential for triclosan would include encouraging the development of small cities, raising awareness of health risks, nurturing environmentally-friendly consumer values, and improving the environmental performance of TCS-containing products. © 2014 Elsevier B.V.
Other Subjects
China; Environmental exposure; Mainland chinas; Substance flow analysis; Triclosan; runoff; triclosan; topical antiinfective agent; triclosan; water pollutant; chemical substance; environmental assessment; health risk; metabolism; pollution exposure; public health; Article; atmosphere; bioaccumulation; biodegradation; China; drug use; environmental exposure; flow measurement; incineration; landfill; microbial community; photolysis; river; sea; sediment; soil; soil pollution; solid waste management; suspended particulate matter; waste component removal; waste water management; waste water treatment plant; water pollution; analysis; environmental exposure; statistics and numerical data; water flow; water pollutant; China; Anti-Infective Agents, Local; China; Environmental Exposure; Triclosan; Water Movements; Water Pollutants, Chemical
Type
journal article