Insights of Emerging Contaminants in Environmental Matrices: Analysis, Behaviour and Fate

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Ecotoxicology".

Deadline for manuscript submissions: closed (10 March 2023) | Viewed by 1422

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U.S. Air Force Civil Engineer Center, Joint Base, San Antonio, TX, USA
Interests: emerging contaminants; per- and polyfluoroalkyl substances; environmental analysis; environmental toxicity; risk assessment
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Special Issue Information

Dear Colleagues,

Equally critical to the inherent toxicology of chemicals is the ability to accurately measure them in the environment and predict their stability and transport potential at a variety of spatial scales. In certain cases, the physical and/or chemical processes that contribute to the toxicology of a chemical/substance are also operative in regulating their environmental fate. Thus, researchers that focus on toxicology and the risk of emerging contaminants should also be aware of the relevant literature on environmental fate and vice versa. This Special Edition is intended to bridge this gap and will focus on timely studies or review articles related to the analysis, transport (i.e., sorption and desorption), degradability, and/or phase behavior of chemicals or substances of emerging concern. Authors are invited and welcome to submit original research papers, reviews, and short communications.

Dr. Richard Anderson
Guest Editor

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Keywords

  • emerging contaminants
  • toxicology
  • analysis
  • transport
  • degradability
  • phase behavior
  • environmental fate

Published Papers (1 paper)

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Research

12 pages, 2500 KiB  
Article
The Migration Rules of Malathion during Indoor Simulated Lake Freezing
by Yan Zhang, Xiaozhuang Wang, Wanli Zhao, Yucan Liu, Tongshuai Liu and Peiyuan Yang
Toxics 2023, 11(3), 222; https://doi.org/10.3390/toxics11030222 - 26 Feb 2023
Viewed by 1108
Abstract
The effect of malathion in ice is a poorly researched area, and ice is an important habitat for organisms at the base of the food web. This study presents laboratory-controlled experiments designed to investigate the migration rule of malathion during lake freezing. Concentrations [...] Read more.
The effect of malathion in ice is a poorly researched area, and ice is an important habitat for organisms at the base of the food web. This study presents laboratory-controlled experiments designed to investigate the migration rule of malathion during lake freezing. Concentrations of malathion were determined in samples of melted ice and in under-ice water. The effects of the initial sample concentration, freezing ratio, and freezing temperature on the distribution of malathion in the ice–water system were investigated. The concentration effect and migration capacity of malathion during freezing was characterized by the concentration rate and distribution coefficient. The results showed that the formation of ice led to the concentration of malathion appearing as follows: concentration in under-ice water > concentration in raw water > concentration in ice. This implied that malathion tended to migrate from the ice to the under-ice water during the freezing process. The increase in the initial malathion concentration, freezing ratio, and freezing temperature caused a more pronounced repulsion of the malathion by the ice and increased the migration to the under-ice water. When the solution of malathion with an initial concentration of 50 μg/L was frozen at –9 °C and the freezing ratio reached 60%, the concentration of malathion in the under-ice water was concentrated to 2.34 times the initial concentration. The migration of malathion to under-ice water during freezing may pose a potential threat to under-ice ecology; therefore, the environmental quality and impact of under-ice water in icebound lakes needs to be given more attention. Full article
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