DOI: 10.1016/j.watres.2018.08.005
Scopus记录号: 2-s2.0-85053106138
论文题名: Tracking hospital effluent-derived gadolinium in Atlantic coastal waters off Brazil
作者: Pedreira R.M.A. ; Pahnke K. ; Böning P. ; Hatje V.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145 起始页码: 62
结束页码: 72
语种: 英语
英文关键词: Anthropogenic gadolinium
; Gadolinium contrasting agent
; GEOTRACES
; REE
; Sewage outfalls
Scopus关键词: Discharge (fluid mechanics)
; Effluents
; Hospitals
; Magnetic resonance imaging
; Outfalls
; Rare earths
; Sewage
; Submarines
; Freshwater inputs
; GEOTRACES
; Hospital effluent
; Magnetic Resonance Imaging (MRI)
; Negative Ce anomaly
; Seawater samples
; Sewage outfall
; Submarine outfalls
; Gadolinium compounds
; anthropogenic source
; coastal water
; effluent
; freshwater environment
; freshwater input
; gadolinium
; hospitality industry
; point source pollution
; research program
; underwater environment
; wastewater
; wastewater treatment
; Atlantic Coast [Brazil]
; Atlantic Coast [South America]
; Atlantic Ocean
; Atlantic Ocean (South)
; Atlantic Ocean (Tropical)
; Brazil
英文摘要: The use of gadolinium (Gd) complexes as contrast agents in magnetic resonance imaging (MRI) has resulted in point source releases of anthropogenic Gd into the environment and presents the opportunity to trace the fate of wastewater plumes. Here we collected seawater samples along the coast of Northeast Brazil to investigate the influence of two submarine sewage outfalls on the distribution of Gd and other rare earth elements (REE) in the coastal waters. The shale-normalized REEs only show a small light over heavy REE enrichment and negative Ce anomalies, likely reflecting the influence of freshwater inputs. Positive Gd anomalies are observed at most of the sampling sites, indicating the ubiquitous presence of anthropogenic Gd in coastal waters. The highest Gd anomalies are found in the vicinity of the submarine sewage outfalls and decrease with increasing distance from point source. The total daily discharge of 216 ± 82 g Gd and 92.0 ± 19.3 g Gd was calculated for the Rio Vermelho (ERV) and Boca do Rio (EBR) submarine outfalls, respectively, which on population bases equates to 11.5 ± 4.3 g Gd d−1 for ERV and 15.5 ± 3.3 g Gd d−1 for EBR per 100 000 persons. It is estimated that in 2016 the annual emission of anthropogenic Gd by hospitals and clinics in Brazil varied between 527 kg and 5.3 tons. It was roughly estimated that between 698 and 2021 g Gd d−1 are discharged into the Tropical and South Atlantic waters due to submarine outfall sewage along the coast of Brazil. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112432
Appears in Collections: 气候减缓与适应
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作者单位: Centro Interdisciplinar de Energia e Ambiente, CIENAM, Inst. de Química, Universidade Federal da Bahia, Ondina, Salvador, Bahia 40170-115, Brazil; Max Planck Research Group for Marine Isotope Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Oldenburg, Germany
Recommended Citation:
Pedreira R.M.A.,Pahnke K.,Böning P.,et al. Tracking hospital effluent-derived gadolinium in Atlantic coastal waters off Brazil[J]. Water Research,2018-01-01,145