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Temporal and Spatial Variations of Potentially Toxic Elements in PM < sub > 10 < /sub > Collected in Jeddah City, Saudi Arabia
In this study, ambient particulate matter with an aerodynamic diameter equal to or less than 10 microns (PM10) has been collected at three different locations in Jeddah city, Saudi Arabia. The locations are characterized by differences in terms of traffic, residential intensity, industrial, and non-road mobile machinery activities. The monthly and annual mass concentration of the PM10 exceeds the recommended annual limit of the World Health Organization (15 µg/m3) and the European air quality standard (40 µg/m3) at the three locations. The collected PM10 samples as well as a certified reference material of atmospheric pa...
Source: Archives of Environmental Contamination and Toxicology - August 22, 2023 Category: Environmental Health Authors: Abdallah A Shaltout Mohammad W Kadi Omar H Abd-Elkader Johan Boman Source Type: research

Glyphosate is Harmful to Early Life Stages of the Viviparous Fish Jenynsia Multidentata: Biochemical and Locomotor Effects
In this study, we assessed the effects of environmentally relevant concentrations of glyphosate (30-100 µg/L) on the early life stages of the viviparous fish Jenynsia multidentata through biochemical and locomotor endpoints. At 96 h of exposure, 30 and 65 µg/L glyphosate caused an increase in acetylcholinesterase (AChE) activity, and 65 µg/L glyphosate also augmented the levels of lipid peroxidation. Glyphosate at 100 µg/L did not alter the activity of acetylcholinesterase or the levels of lipid peroxidation, but it stimulated the activity of the cellular detoxification enzyme glutathione S-transferase. In addition, al...
Source: Archives of Environmental Contamination and Toxicology - August 21, 2023 Category: Environmental Health Authors: Jenifer Silveira Moraes Dennis Guilherme da Costa Silva Bernardo Dos Santos Vaz Cati úscia Weinert Mizuschima Camila de Martinez Gaspar Martins Source Type: research

Subfossil Chironomid Assemblages as Indicators of Remedial Efficacy in the Historically Contaminated St. Lawrence River at Cornwall, Ontario
Arch Environ Contam Toxicol. 2023 Aug 21. doi: 10.1007/s00244-023-01021-1. Online ahead of print.ABSTRACTLong-term data are required to quantify the impacts of historic industrial pollution and subsequent remedial action on the nearshore benthic community in the St. Lawrence River Area of Concern at Cornwall, Ontario. Specifically, high-quality temporal records are needed to understand changes in benthic invertebrate assemblages in response to multiple possible drivers including industrial pollution, environmental heterogeneity, and climate warming. We compare long-term records of subfossil chironomid assemblages and geoch...
Source: Archives of Environmental Contamination and Toxicology - August 21, 2023 Category: Environmental Health Authors: Isaac Armstrong Katherine E Moir Jeffrey J Ridal Brian F Cumming Source Type: research

Long-Term Exposure of the Red Cherry Shrimp Neocaridina davidi to Diclofenac: Impact on Survival, Growth, and Reproductive Potential
In this study, both ovigerous females and males of this species were exposed for 63 d to 0 (control), 0.1, or 1 mg/L of diclofenac. At the highest concentration, significant mortality was detected, and the somatic growth of females was significantly decreased. The percentage of females with a second spawn, observable from day 45, significantly increased at 1 mg/L, while the time between spawns was significantly reduced at both concentrations assayed. However, the gonadal analysis made at the end of the assay in the surviving females showed a significantly lower proportion of advanced oocytes in females exposed to 1 mg/L, a...
Source: Archives of Environmental Contamination and Toxicology - August 18, 2023 Category: Environmental Health Authors: Marina Zanitti Daniel Alberto Medesani Enrique Marcelo Rodr íguez Laura Susana L ópez Greco Source Type: research

Bioaccumulation, Bioindication and Health Risk Assessment of Heavy Metals in Cape Horse Mackerel (Trachurus trachurus) and Slinger Seabream (Chrysoblephus puniceus) in the Durban Basin and Cape Vidal, South Africa
Arch Environ Contam Toxicol. 2023 Aug 17. doi: 10.1007/s00244-023-01028-8. Online ahead of print.ABSTRACTThe bioaccumulation of heavy metals (HMs) in marine fish is a growing global concern due to potential human health risks. The study analyzed HM in the muscle tissue, gills, and gut of adult male and female cape horse mackerel and slinger seabream caught in the polluted Durban Basin and pristine Cape Vidal from April 2018 to February 2019. Results revealed interspecific, spatial, and organ-specific variability in HM levels. In the Durban Basin, slinger seabream had bioaccumulation (in mg/kg) of As (2.3 ± 0.2), Cr (2.6 �...
Source: Archives of Environmental Contamination and Toxicology - August 17, 2023 Category: Environmental Health Authors: Sanjeev Debipersadh Henry Joseph Oduor Ogola Kevin Mearns Ramganesh Selvarajan Source Type: research

Risk of Pesticides Mixtures in Rice to Birds and Humans in Iran
This study investigated the residues of 14 organophosphate insecticides and 2 herbicides in rice cultivated at five locations in the southwest of Iran. The pesticide residues were then used to estimate the risk that they may pose to the health of bird and human consumers. The rice samples from the five locations contained residues from 10 to 13 pesticides. Of the 16 pesticides measured, the mean concentration of 12 pesticides exceeded the maximum residue limit set by the Iranian National Standards Organization at two or more of the sampling sites. The greatest total exceedance (sum of all pesticides detected in rice) of th...
Source: Archives of Environmental Contamination and Toxicology - August 17, 2023 Category: Environmental Health Authors: Zohreh Moghiseh Nematollah Jaafarzadeh Sahand Jorfi Afshin Takdastan Mojtaba Kalantar Ryan Prosser Source Type: research

A Quantitative Comparison of Oil Sources on Shorelines of Prince William Sound, Alaska, 17 Years After the Exxon Valdez Oil Spill
Arch Environ Contam Toxicol. 2023 Aug 16. doi: 10.1007/s00244-023-01019-9. Online ahead of print.ABSTRACTEnvironmental damage caused by accidental discharges of pollutants depends in part on the degree of prior contamination, in that increased pollution of an already heavily contaminated region will usually be considered less detrimental than equivalent pollution of a pristine region. Quantitative comparisons of specific pollution events with the extent and severity of prior contamination are rare, owing to difficulties in identifying and assessing contaminants remaining from prior pollution events, and in some cases conta...
Source: Archives of Environmental Contamination and Toxicology - August 16, 2023 Category: Environmental Health Authors: Jeffrey W Short Jacek M Maselko Source Type: research