Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.scitotenv.2017.04.203 |
Long-term variation in concentrations and mass loads in a semi-arid watershed influenced by historic mercury mining and urban pollutant sources | |
Mckee, Lester J.1; Bonnema, Autumn2; David, Nicole1; Davis, Jay A.1; Franz, Amy1; Grace, Richard3; Greenfield, Ben K.4; Gilbreath, Alicia N.1; Grosso, Cristina1; Heim, Wesley A.2; Hunt, Jennifer A.1; Leatherbarrow, Jon E.1; Lowe, Sarah1; Pearce, Sarah A.1; Ross, John R. M.1; Yee, Donald1 | |
通讯作者 | Mckee, Lester J. |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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ISSN | 0048-9697 |
EISSN | 1879-1026 |
出版年 | 2017 |
卷号 | 605页码:482-497 |
英文摘要 | Urban watersheds are significantly anthropogenically-altered landscapes. Most previous studies cover relatively short periods, without addressing concentrations, loads, and yields in relation to annual climate fluctuations, and datasets on Ag, Se, PBDEs, and PCDD/Fs are rare. Intensive storm-focused sampling and continuous turbidity monitoring were employed to quantify pollution at two locations in the Guadalupe River (California, USA). At a downstream location, we determined loads of suspended sediment (SS) for 14 yrs., mercury (HgT), PCBs, and total organic carbon (TOC) (8 yrs), total methylmercury (MeHgT) (6 yrs), nutrients, and trace elements including Ag and Se (3 yrs), DDTs, chlordanes, dieldrin, and PBDEs (2 yrs), and PCDD/Fs (1 yr). At an upstream location, we determined loads of SS for 4 yrs. and HgT, MeHgT, PCBs and PCDD/Fs for 1 yr. These data were compared to previous studies, climatically adjusted, and used to critically assess the use of small datasets for estimating annual average conditions. Concentrations and yields in the Guadalupe River appear to be atypical for total phosphorus, DDTs, dieldrin, HgT, MeHgT, Cr, Ni, and possibly Se due to local conditions. Other pollutants appear to be similar to other urban systems. On average, wet season flow varied by 6.5-fold and flow-weighted mean (FWM) concentrations varied 4.4-fold, with an average 7.1-fold difference between minimum and maximum annual loads. Loads for an average runoff year for each pollutant were usually less than the best estimate of long-term average. The arithmetic average of multiple years of load data or a FWM concentration combined with mean annual flow was also usually below the best estimate of long-term average load. Mean annual loads using sampled years were also less than the best estimate of long-term average by a mean of 2.2-fold. Climatic adjustment techniques are needed for computing estimates of long-term average annual loads. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | PCB Methylmercury Yield Inter-annual variation Turbidity surrogate Management |
类型 | Article |
语种 | 英语 |
国家 | USA ; Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000408275500051 |
WOS关键词 | SAN-FRANCISCO BAY ; POLYBROMINATED DIPHENYL ETHERS ; DIBENZO-P-DIOXINS ; POLYCHLORINATED-BIPHENYLS PCBS ; RICHMOND RIVER CATCHMENT ; STORMWATER RUNOFF ; TRACE-METALS ; CHESAPEAKE BAY ; ORGANIC CONTAMINANTS ; MEDITERRANEAN SEA |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/202247 |
作者单位 | 1.San Francisco Estuary Inst, 4911 Cent Ave, Richmond, CA 94804 USA; 2.Moss Landing Marine Labs, Pob 450, Moss Landing, CA 95039 USA; 3.SGS AXYS, Sidney, BC, Canada; 4.Southern Illinois Univ, Edwardsville, IL USA |
推荐引用方式 GB/T 7714 | Mckee, Lester J.,Bonnema, Autumn,David, Nicole,et al. Long-term variation in concentrations and mass loads in a semi-arid watershed influenced by historic mercury mining and urban pollutant sources[J],2017,605:482-497. |
APA | Mckee, Lester J..,Bonnema, Autumn.,David, Nicole.,Davis, Jay A..,Franz, Amy.,...&Yee, Donald.(2017).Long-term variation in concentrations and mass loads in a semi-arid watershed influenced by historic mercury mining and urban pollutant sources.SCIENCE OF THE TOTAL ENVIRONMENT,605,482-497. |
MLA | Mckee, Lester J.,et al."Long-term variation in concentrations and mass loads in a semi-arid watershed influenced by historic mercury mining and urban pollutant sources".SCIENCE OF THE TOTAL ENVIRONMENT 605(2017):482-497. |
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