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Method development and comprehensive study of matrix effects for the determination of trace organic contaminants in lake sediments.
J Chromatogr A
December 2024
Department of Chemistry, Université de Sherbrooke, Sherbrooke, QC, Canada; Université de Sherbrooke Water Research Group (GREAUS), Université de Sherbrooke, Sherbrooke, QC, Canada. Electronic address:
The presence of trace organic contaminants (TrOCs), such as pharmaceuticals, personal care products, additives, and polar pesticides in sediments of rivers and lakes highly impacted by anthropogenic activities makes sediments a secondary source of contamination for aquatic ecosystems. Considering this, a method for analyzing 44 TrOCs of diverse nature (including five transformation products, 13 pharmaceuticals, five personal care products, 14 pesticides, and seven additives) was developed and validated. It is based on extraction by pressurized liquid extraction (PLE), followed by purification and pre-concentration by solid phase extraction (SPE) and quantification by liquid chromatography coupled to a triple quadrupole mass spectrometer (LC-QqQMS).
View Article and Find Full Text PDFCorrection to: Assessment of climatic and anthropogenic influences on vegetation dynamics in China: a consideration of climate time-lag and cumulative effects.
Int J Biometeorol
January 2025
College of Resources and Environment, Qingdao Agricultural University, Qingdao, Shandong, 266109, China.
Freshwater Mussel (Unio pictorum) Shells Reveal Hydrological and Environmental Change From 1300 BC to the Present Day.
Glob Chang Biol
October 2024
Department of Zoology, David Attenborough Building, University of Cambridge, Cambridge, UK.
Preserved biological communities can provide baseline data about the historical ecosystems and environmental conditions that preceded recent anthropogenic alteration. Freshwater mussel shells show particularly good preservation, and the shell assemblages commonly found during archaeological excavations can offer insights into past ecosystems. We studied assemblages of Unio pictorum mussel shells from palaeochannel silts associated with the Late Bronze Age site of Must Farm in eastern England (c.
View Article and Find Full Text PDFHas unsustainable groundwater use induced low flow regimes in the Urucuia Aquifer System? An urgent call for integrated water management.
J Environ Manage
November 2024
Department of Water Resources, Universidade Federal de Lavras, Campus Universitário, CP 3037, 37200-900, Lavras, MG, Brazil; Department of Agricultural and Biological Engineering, College of ACES, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
Groundwater depletion in the Urucuia Aquifer System (UAS) has concerned the Brazilian water agencies since it is the principal water source in the arid length of the São Francisco river. In contrast, the irrigation fields increasing and uncertainty regarding climate variability have impaired the management of this important hydrograph region of Brazil. Therefore, the proper management of the UAS relies on the correct definition of the factors that are impacting most of the ground and surface waters, i.
View Article and Find Full Text PDFGeochemical baseline values determination and spatial distribution of trace elements in topsoils: An application in Sicily region (Italy).
Sci Total Environ
December 2024
Università degli studi di Palermo, DiSTeM, Palermo, Italy.
This study proposed an approach to determine the geochemical baseline values in topsoils. The chosen study area is Sicily (Italy), a region characterized by significant lithological heterogeneity. Eighty-three topsoil samples were collected at several sites away from potential anthropogenic pollution sources.
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