期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 54, 期 19, 页码 12326-12334出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.0c03211
关键词
-
资金
- UK Water Industry Research (UKWIR) [EQ01A231]
- NERC [noc010009] Funding Source: UKRI
Microplastics were characterized in eight water treatment works (WTWs) in England and Wales (UK). Sources included river water, groundwater, and an upland reservoir. Water treatment varied from disinfection, filtration, sedimentation, and activated carbon techniques. At each WTW, five repeat samples of raw and potable water and two repeat sludge samples were taken over 5 months. Microplastics in water were captured on 10 mu m filters and nonplastic materials digested in the laboratory. Microplastics >= 25 mu m were analyzed using Fourier-transform infrared microscopy. Blanks revealed consistent polyethylene (PE), poly-(ethylene terephthalate) (PET), and polypropylene (PP) contamination. Spike recoveries for 63-90 mu m polyamide microplastics demonstrated 101% (standard deviation, SD 27%) and 113% (SD 15%) recovery for raw and potable waters and 52% (SD 13%) for sludge. Only four of the six WTWs sampled for raw water and only two of eight WTWs in their potable water had microplastics above the limit of quantification. Considering only the WTWs with quantifiable microplastics, then on average, 4.9 microplastic particles/L were present in raw water and only 0.00011 microplastic particles/L were present in potable water (99.99% removal). Values in waste sludge were highly variable. PE, PET, and PP were the most common polymers quantified in raw water and sludge, and polystyrene and acrylonitrile butadiene styrene were the most common polymers quantified in potable water.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据