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Mobilization of Heavy Metals in a Saline Confined Aquifer as a Consequence of Rainwater Injection: A Case Study in Southern Vietnam
In this study, a 30-m-deep well was installed in a confined aquifer. Pyrite framboids were observed in the sediment samples collected during the well drilling. A total of 400 L rainwater was injected into the well for 70 min. After waiting 63 h, the well was extracted at a pump speed of 2.7 L/min and the chemistry of the pumped groundwater was monitored for 10 h. The groundwater showed geochemical features close to rainwater at the early stage of pumping and gradually changed to those of the background waters, especially, in electrical conductivity and Cl- concentration, as the pumping proceeded. However, the groundwater p...
Source: Archives of Environmental Contamination and Toxicology - July 21, 2023 Category: Environmental Health Authors: Quang-Khai Ha Kangjoo Kim Kyungseok Ko Nam Long Phan Thanh-Huy Phung Source Type: research

Correction to: Preliminary Study on the Role of Mangroves in Entrapping Microplastics in Tuticorin Coast of Gulf of Mannar, Southeast Coast of India
Arch Environ Contam Toxicol. 2023 Jul 21. doi: 10.1007/s00244-023-01014-0. Online ahead of print.NO ABSTRACTPMID:37477657 | DOI:10.1007/s00244-023-01014-0 (Source: Archives of Environmental Contamination and Toxicology)
Source: Archives of Environmental Contamination and Toxicology - July 21, 2023 Category: Environmental Health Authors: S Shelciya V Glen Esmeralda Jamila Patterson Source Type: research

Exposure to Low Concentrations of AMPA Influences Morphology and Decreases Survival During Larval Development in a Widespread Amphibian Species
In this study, we investigated sublethal effects of environmental concentrations of AMPA on the larval development of a widespread amphibian species, the spined toad Bufo spinosus. We performed a factorial experiment to study the effect of concentration and the timing of exposure (during embryonic development, larval development or both) to AMPA on the morphology, rate of development and survival of tadpoles. AMPA and timing of exposure interactively affected tadpole size (individuals exposed to AMPA after hatching were transitorily smaller, while individuals exposed to AMPA before hatching were longer), but not duration o...
Source: Archives of Environmental Contamination and Toxicology - July 19, 2023 Category: Environmental Health Authors: Marion Cheron Fran çois Brischoux Source Type: research

Benefits of Short-term Premature Mortality Reduction Attributed to PM < sub > 2.5 < /sub > Pollution: A Case Study in Long an Province, Vietnam
This study aimed to evaluate PM2.5-related human health effects causing early deaths attributable to respiratory, cardiovascular, and circulatory diseases in all ages and genders. Health end-points and health impact estimation, economic loss model, groups of PM2.5 concentration data, data of exposed population, data of baseline premature mortality rate, and data of health impact functions were used. Hourly PM2.5 concentration data sets were generated specifically using the coupled Weather Research and Forecasting Model (WRF)/Community Multiscale Air Quality Modelling System (CMAQ) models. Daily PM2.5 pollution levels consi...
Source: Archives of Environmental Contamination and Toxicology - July 19, 2023 Category: Environmental Health Authors: Long Ta Bui Han Thi Ngoc Lai Phong Hoang Nguyen Source Type: research

Sediment Spatial Distribution and Quality Assessment of Metals in Chinook Salmon and Resident Killer Whale Marine Habitat in British Columbia, Canada
Arch Environ Contam Toxicol. 2023 Jul 14. doi: 10.1007/s00244-023-01013-1. Online ahead of print.ABSTRACTAt-risk resident killer whale (Orcinus orca) populations of the northeastern Pacific, Canada, and their main prey, Chinook Salmon (Oncorhynchus tshawytscha), are exposed to a variety of contaminants including chemical elements from both natural and anthropogenic sources, which may be constraining their recovery. Concentrations of 36 chemical elements in subtidal surface sediments (1-435 m depth) collected from 98 sites along the British Columbia coast were used to characterize coast-wide patterns, and a subset of metals...
Source: Archives of Environmental Contamination and Toxicology - July 14, 2023 Category: Environmental Health Authors: Joseph J Kim Kelsey Delisle Tanya M Brown Peter S Ross Marie No ël Source Type: research

Mercury in Ten Storm-Petrel Populations from the Antarctic to the Subtropics
In this study, we compared mercury levels among seven species of storm-petrels breeding on the Antarctic South Shetlands and subantarctic Kerguelen Islands, in temperate waters of the Chatham Islands, New Zealand, and in temperate waters of the Pacific off Mexico. We tested for differences in the level of contamination associated with breeding and inter-breeding distribution and trophic position. We collected inert body feathers and metabolically active blood samples in ten colonies, reflecting long-term (feathers) and short-term (blood) exposures during different periods ranging from early non-breeding (moult) to late bre...
Source: Archives of Environmental Contamination and Toxicology - July 12, 2023 Category: Environmental Health Authors: Petra Quillfeldt Yuliana Bedolla-Guzm án Marcela M Libertelli Yves Cherel Melanie Massaro Paco Bustamante Source Type: research

Large Dataset-Based Regression Model of Chemical Toxicity to Vibrio fischeri
Arch Environ Contam Toxicol. 2023 Jul 5. doi: 10.1007/s00244-023-01010-4. Online ahead of print.ABSTRACTFor the first time, a global regression quantitative structure-toxicity/activity relationship (QSTR/QSAR) model was developed for the toxicity of a large data set including 1236 chemicals towards Vibrio fischeri, by using random forest (RF) regression algorithm. The optimal RF model with RF parameters of mtry = 3, ntree = 150 and nodesize = 5 was based on 13 molecular descriptors. It can achieve accurate prediction for the toxicity of 99.1% of 1236 chemicals, and yield coefficients of determination R2 of 0.893 for 930 lo...
Source: Archives of Environmental Contamination and Toxicology - July 5, 2023 Category: Environmental Health Authors: Xinliang Yu Minghui He Limin Su Source Type: research