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Title: Detection and Screening of Organic Contaminants in A Riverine System of Georgia Using Non-Targeted Analysis

Journal Article · · Environments (Online)
 [1];  [2]; ORCiD logo [3]
  1. Univ. of Georgia, Athens, GA (United States); Savannah River Ecology Laboratory - University of Georgia
  2. Univ. of Georgia, Athens, GA (United States)
  3. Univ. of Georgia, Athens, GA (United States); Savannah River Site (SRS), Aiken, SC (United States). Savannah River Ecology Laboratory (SREL)

Numerous organic chemicals exist within aquatic environments, yet effectively screening and prioritizing them is a huge challenge. This study provides a comprehensive investigation into the ecological dynamics of the North Oconee River within Athens-Clarke County, Georgia, with a specific focus on the distribution of 33 identified compounds, including a prominent pesticide. The research, conducted in the riverine ecosystems proximal to the Firefly trail, employs advanced analytical techniques to elucidate potential contamination sources arising from agricultural and urban runoff. Intriguingly, the study reveals North Oconee River near the Firefly Trail as a notable site for heightened pesticide contamination, warranting a meticulous exploration of its origins. Furthermore, the investigation unveils the intricate microbial degradation processes of malathion within the North Oconee River, elucidating the pivotal role played by microbial activity in river water. The detection of degradant byproducts prompts the considerations of bioavailability and toxicity, associating potential implications for the river’s overall ecological health. Ongoing research endeavors to precisely quantify environmental risks and unravel indigenous microbial degradation pathways, presenting pivotal contributions to the scientific community’s understanding of complex riverine ecosystems. This research serves as a foundational piece in informing sustainable environmental management practices and emphasizes the urgency of comprehensive stewardship in safeguarding aquatic ecosystems.

Research Organization:
Savannah River Site (SRS), Aiken, SC (United States). Savannah River Ecology Laboratory (SREL)
Sponsoring Organization:
USDOE Office of Environmental Management (EM)
Grant/Contract Number:
EM0005228
OSTI ID:
2349081
Journal Information:
Environments (Online), Journal Name: Environments (Online) Journal Issue: 5 Vol. 11; ISSN 2076-3298
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (19)

Biodegradation of malathion by Brevibacillus sp. strain KB2 and Bacillus cereus strain PU journal October 2011
Organophosphate toxicity: updates of malathion potential toxic effects in mammals and potential treatments journal May 2020
The relationship of land use practices to surface water quality in the Upper Oconee Watershed of Georgia journal March 2000
Transformation pathway and toxicity assessment of malathion in aqueous solution during UV photolysis and photocatalysis journal November 2019
A fuzzy cognitive map approach to predict the hazardous effects of malathion to environment (air, water and soil) journal January 2021
Data mining for pesticide decontamination using heterogeneous photocatalytic processes journal May 2021
Oxygenated polycyclic aromatic hydrocarbons in the surface water environment: Occurrence, ecotoxicity, and sources journal May 2022
Emerging organic contaminants in global community drinking water sources and supply: A review of occurrence, processes and remediation journal June 2022
Pesticides in the urban environment: A potential threat that knocks at the door journal April 2020
Wide exposure of persistent organic pollutants (PoPs) in natural waters and sediments of the densely populated Western Bengal basin, India journal May 2020
Sub-organism (acetylcholinesterase activity), population (survival) and chemical concentration responses reinforce mechanisms of antagonism associated with malathion toxicity journal July 2021
The concentration of persistent organic pollutants in water resources: A global systematic review, meta-analysis and probabilistic risk assessment journal November 2021
Comprehensive two-dimensional gas chromatography in environmental analysis journal September 2018
Comparison of photocatalysis and photolysis of malathion, isomalathion, malaoxon, and commercial malathion—Products and toxicity studies journal November 2007
Synthetic Phenolic Antioxidants: A Review of Environmental Occurrence, Fate, Human Exposure, and Toxicity journal September 2020
Nontarget Screening with High Resolution Mass Spectrometry in the Environment: Ready to Go? journal September 2017
Suspect and Nontarget Screening for Contaminants of Emerging Concern in an Urban Estuary journal December 2019
A comprehensive review on enzymatic degradation of the organophosphate pesticide malathion in the environment journal September 2019
Assessing the Potential Impact of Rising Production of Industrial Wood Pellets on Streamflow in the Presence of Projected Changes in Land Use and Climate: A Case Study from the Oconee River Basin in Georgia, United States journal January 2019