期刊
WATER RESEARCH
卷 115, 期 -, 页码 245-255出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2017.03.010
关键词
Pesticide; Urban runoff; Stormwater management; Alternative water source; Spatio-temporal pattern; Principal component analysis
资金
- CRC for Water Sensitive Cities
- Australian Government
- Cities as Water Supply Catchments program - National Water Commission
- Victoria Smart Water Fund
- South East Queensland Urban Water Security Research Alliance (UWSRA)
- CSIRO Water for a Healthy Country Flagship
- University of Queensland
- Griffith University
- Spanish MINECO [RYC-2012-12181]
- National Science Foundation [OISE-1243543]
- ICREA Funding Source: Custom
- Office Of The Director
- Office Of Internatl Science &Engineering [1243543] Funding Source: National Science Foundation
Stormwater is a major driving factor of aquatic ecosystem degradation as well as one of the largest untapped urban freshwater resources. We present results from a long-term, multi-catchment study of urban stormwater pesticides across Australia that addresses this dichotomous identity (threat and resource), as well as dominant spatial and temporal patterns in stormwater pesticide composition. Of the 27 pesticides monitored, only 19 were detected in Australian stormwater, five of which (diuron, MCPA, 2,4-D, simazine, and triclopyr) were found in >50% of samples. Overall, stormwater pesticide concentrations were lower than reported in other countries (including the United States, Canada and Europe), and exceedances of public health and aquatic ecosystem standards were rare (<10% of samples). Spatiotemporal patterns were investigated with principal component analysis. Although stormwater pesticide composition was relatively stable across seasons and years, it varied significantly by catchment. Common pesticide.associations appear to reflect 1) user application,of common registered formulations containing characteristic suites of active ingredients, and 2) pesticide fate properties (e.g., environmental mobility and persistence). Importantly, catchment-specific occurrence patterns provide opportunities for focusing treatment approaches or stormwater harvesting strategies. Crown Copyright (C) 2017 Published by Elsevier Ltd. All rights reserved.
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