期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 54, 期 23, 页码 15132-15141出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.0c05867
关键词
-
资金
- Research Training Scholarship - QAEHS, The University of Queensland
- QAEHS Research Higher Degree Top-Up Scholarship
- QUEX PhD scholarship - a joint initiative of The University of Queensland
- QUEX PhD scholarship - a joint initiative of The University of Exeter
- Queensland Health
- Australian Research Council Linkage Project [LP150100364]
Plastics are contaminants of emerging concern that can enter the environment from multiple sources, including via land application of treated sewage sludge (biosolids). Biosolids samples collected from 82 wastewater treatment plants (WWTPs) across Australia and covering 34% of the population during census week in 2016 were quantitatively analyzed to estimate the release of seven common plastics. Quantitative analysis was performed by pressurized liquid extraction followed by double-shot microfurnace pyrolysis coupled to gas chromatography mass spectrometry. Ninety nine percent of the samples contained plastics (Sigma(6)plastics) at concentrations of between 0.4 and 23.5 mg/g dry weight (median; 10.4 mg/g dry weight), while polycarbonate was not detected in any sample. Per-capita mass loads of plastics (Sigma(6)plastics) released were between 8 and 877 g/person/year across all investigated WWTPs. Polyethylene was the predominant plastic detected, contributing to 69% of Sigma(6)plastics. Based on the concentrations measured, it was projected that around 4700 metric tons (Mt) of plastics are released into the Australian environment through biosolids end-use each year, equating to approximately 200 g/person/year, which represents 0.13% of total plastics use in Australia. Of this, 3700 Mt of plastics are released to agricultural lands and 140 Mt to landscape topsoil. Our results provide a first quantitative per-capita mass loads and emission estimate of plastic types through biosolids end-use.
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