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Health Risk Assessment of Organophosphate Flame Retardants in Soil Across China Based on Monte Carlo Simulation
This study aims to utilize data on the concentrations of organophosphate flame retardants (OPFRs) in surface soil across China coupled with Monte Carlo simulations to compensate for uncertainties in exposure to evaluate the health risks associated with contamination of soil with this class of flame retardants. Results revealed that concentrations of ∑OPFRs were 0.793-406 ng/g dry weight (dw) with an average of 23.2 ng/g dw. In terms of spatial distribution, higher OPFRs concentrations were found in economically developed regions. Although the values of health risk of OPFRs in soil across China were below the threshold, t...
Source: Archives of Environmental Contamination and Toxicology - August 14, 2023 Category: Environmental Health Authors: Mei-Hong Chen Shi-Ming Jia Pu-Fei Yang Fu-Jie Zhu Wan-Li Ma Source Type: research

Comparison of Two Total Mercury Screening and Assessment Methods in Fishes: Biopsy Punch and Dried Muscle Samples
Arch Environ Contam Toxicol. 2023 Aug 12. doi: 10.1007/s00244-023-01020-2. Online ahead of print.ABSTRACTRapid and effective quantification of total mercury concentrations ([THg]) in fish muscle is an important part of ongoing monitoring to provide reliable and near real-time public health guidance. Methods for quantifying THg in fish muscle frequently require the use of large sample mass and numerous preparation steps. Wet (aka fresh weight) biopsy punch samples of fish muscle have been used to quantify THg directly, without drying and homogenization. Both methods have advantages and disadvantages. We compare the use of f...
Source: Archives of Environmental Contamination and Toxicology - August 12, 2023 Category: Environmental Health Authors: Andrew Cyr Daniella A Murillo-Cisneros J Andr és López Christoff Furin Todd O'Hara Source Type: research

Influences of Wastewater Treatment on the Occurrence of Parabens, p-Hydroxybenzoic Acid and Their Chlorinated and Hydroxylated Transformation Products in the Brazos River (Texas, USA)
This study evaluates both parabens and paraben transformation products in the Brazos River upstream and downstream of a wastewater facility located in Waco, Texas. Concentrations of thirteen compounds were reported in this study, five parent parabens and eight paraben disinfection by-products. Analyte concentrations were spatially evaluated to determine if release of wastewater effluent affects their concentrations in the river. Two Brazos River tributaries were also sampled to determine if they released parabens and related compounds to the Brazos. Sampling occurred weekly for one year with at least 40 samples collected a...
Source: Archives of Environmental Contamination and Toxicology - August 9, 2023 Category: Environmental Health Authors: Michael T Penrose George P Cobb Source Type: research

Land Use Influencing the Distribution of Pesticides in Surface Water: The Case of the Ma River and Its Tributaries in Thanh Hoa Province, Vietnam
This study presents an investigation of banned pesticides used across the range of land use in catchments of the Ma river and its tributaries in Thanh Hoa province, Vietnam. Applying principal component analysis (PCA), we investigated the relationship between specific pesticides and land use. Besides, cluster analysis (CA), the method of aggregating monitoring locations, was applied in this study to find spatial pattern of pesticides pollution. Due to their persistence and remobilization during floods and runoff, all ten banned pesticides-eight insecticides (aldrin/dieldrin, BHC, chlordane, endrin, heptachlor, lindane, mal...
Source: Archives of Environmental Contamination and Toxicology - July 29, 2023 Category: Environmental Health Authors: Trong Dieu Hien Le Luan Hong Pham Quang Toan Dinh Tran Minh Thao Le Nguyen Thi Bich Tram Source Type: research