Unravelling the microplastic menace: different polymers additively increase bee vulnerability
Environ Pollut. 2024 May 2:124087. doi: 10.1016/j.envpol.2024.124087. Online ahead of print.ABSTRACTMicroplastics (MPs) are growing and ubiquitous environmental pollutants and represent one of the greatest contemporary challenges caused by human activities. Current research has predominantly examined the singular toxicological effects of individual polymers, neglecting the prevailing reality of organisms confronted with complex contaminant mixtures and potential synergistic effects. To fill this research gap, we investigated the lethal and sublethal effects of two common MPs, polystyrene (PS - 4.8-5.8 μm) and poly(methyl ...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Federico Ferrante Elisa Pasquini Federico Cappa Lorenzo Bellocchio David Baracchi Source Type: research

Reproductive and endocrine-disrupting toxicity of Pyrogallol in catfish (Clarias gariepinus)
Environ Pollut. 2024 May 2:124104. doi: 10.1016/j.envpol.2024.124104. Online ahead of print.ABSTRACTEndocrine disruptors are synthetic or natural chemicals that can agonize/antagonize hormone receptors or can interfere with the production and secretion of hormones, leading to altered tissue histology and physiology. Pyrogallol is a contaminant widely distributed in aquatic environments that presents health risks to both humans and animals. However, the potential for endocrine disruption by pyrogallol, particularly in fish, are lacking. The purpose of this study was to shed light on how pyrogallol may affect hormone signall...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Mohamed Hamed Rashad E M Said Christopher J Martyniuk Hamdy A M Soliman Alaa El-Din H Sayed Alaa G M Osman Source Type: research

The synergistic effect of typical chiral organic acids and solution chemistry conditions on the transport of 2-arylpropionic acid chiral derivatives in porous media
This study evaluated the transport of 2-arylpropionic acid derivatives enantiomers (2-APA) in porous media under a variety of solution chemistry conditions via column packing assays. The results revealed the introduction of Malic acid (MA) enantiomers enhanced the mobility of 2-APA enantiomers, but the enhancement effect was different for different 2-APA enantiomers. Batch sorption experiments confirmed that the MA enantiomers occupied the sorption site of the quartz sand, thus reducing the deposition of the 2-APA enantiomer. Homo- or heterochirality between 2-APA and MA dominates the transport of 2-APA enantiomers, with h...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Duo Xu Yantian Ji Bowen Du Bo He Hongyang Chen Huimin Sun Xianqiang Yin Source Type: research

Long-Neglected Contribution of Nitrification to N < sub > 2 < /sub > O Emissions in the Yellow River
This study investigated the isotopic signatures of N2O, thereby quantifying the microbial source of N2O production and the degree of N2O reduction in the Yellow River. Although denitrification has long been considered to be the dominant pathway of N2O production in rivers, our findings indicated that denitrification only accounted for 18.3% (8.2%-43.0%) of the total contribution to N2O production in the Yellow River, with 50.2%-80.2% being concurrently reduced. The denitrification contribution to N2O production (R2 = 0.44, p < 0.01) and N2O reduction degree (R2 = 0.70, p < 0.01) were positively related to the dissolv...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Shuo Wang Shengjie Li Mingfei Ji Jiarui Li Jilin Huang Zhengzhu Dang Zhuo Jiang Shuqi Zhang Xianfang Zhu Guodong Ji Source Type: research

Inorganic UV filter-based sunscreens labelled as eco-friendly threaten sea urchin populations
Environ Pollut. 2024 May 2:124093. doi: 10.1016/j.envpol.2024.124093. Online ahead of print.ABSTRACTAlthough the negative effects of inorganic UV filters have been documented on several marine organisms, sunscreen products containing such filters are available in the market and proposed as eco-friendly substitutes for harmful, and already banned, organic UV filters (e.g. octinoxate and oxybenzone). In the present study, we investigated the effects of four sunscreen products, labelled by cosmetic companies as "eco-friendly", on the early developmental stages of the sea urchin Paracentrotus lividus, a keystone species occurr...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: F Marcellini S Varrella M Ghilardi G Barucca A Giorgetti R Danovaro C Corinaldesi Source Type: research

Marine degradation and ecotoxicity of conventional, recycled and compostable plastic bags
In this study, we assess the degradation of commercially available plastic bags in marine conditions at two scales: aquariums (60 days) and outdoors flow-through mesocosm (120 days). Strength at break point and other tensile strength parameters were used as ecologically relevant endpoints to track mechanical degradation. Ecotoxicity has been assessed along the incubation period using the sensitive Paracentrotus lividus embryo test. Whereas PE bags did not substantially lose their mechanical properties within the 60 d aquarium exposures, compostable bags showed remarkable weight loss and tensile strength decay, some of them...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Sara L ópez-Ibáñez Jakob Quade Angelika Wlodarczyk Mar ía-José Abad Ricardo Beiras Source Type: research

Down to Size: Exploring the Influence of Plastic Particle Dimensions on Physiological and Nervous Responses in Early-Stage Zebrafish
This study brings a straight approach to compare MPs and NPs, and assess their direct and indirect effects on zebrafish embryos and larvae. Zebrafish eggs were exposed before 2 h post fertilization (hpf) to polystyrene MPs (5 μm) and NPs (250 nm) at a concentration of 1000 μg L-1 until 96 hpf. Physiotoxicity and neurotoxicity were assessed prior and post-hatching through several biomarkers. Response to hypoxia (upregulation of hif-1aa and hif-1ab) were found in embryos exposed to MPs, and partly found in those exposed to NPs. Embryos exposed to NPs showed significant tachycardia, reduced O2 consumption and increased apop...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Mathilde J L Oger Oc éane Vermeulen J érôme Lambert Thomas L Madanu Patrick Kestemont Val érie Cornet Source Type: research

Elevated CO < sub > 2 < /sub > exacerbates the risk of methylmercury exposure in consuming aquatic products: Evidence from a complex paddy wetland ecosystem
Environ Pollut. 2024 May 2:124095. doi: 10.1016/j.envpol.2024.124095. Online ahead of print.ABSTRACTElevated CO2 levels and methylmercury (MeHg) pollution are important environmental issues faced across the globe. However, the impact of elevated CO2 on MeHg production and its biological utilization remains to be fully understood, particularly in realistic complex systems with biotic interactions. Here, a complete paddy wetland microcosm, namely, the rice-fish-snail co-culture system, was constructed to investigate the impacts of elevated CO2 (600 ppm) on MeHg formation, bioaccumulation, and possible health risks, in multip...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Danni Wu Lei Chen Xueying Zong Fan Jiang Xiaojie Wang Meiling Xu Fuxun Ai Wenchao Du Ying Yin Hongyan Guo Source Type: research

Retention of ZnO nanoparticles onto polypropylene and polystyrene microplastics: Aging-associated interactions and the role of aqueous chemistry
Environ Pollut. 2024 May 2:124097. doi: 10.1016/j.envpol.2024.124097. Online ahead of print.ABSTRACTMicroplastics (MPs) are pervasive and undergo environmental aging processes, which alters potential interaction with the co-contaminants. However, to assess their contaminant-carrying capacity, mimicking the weathering characteristics of secondary MPs is crucial. To this end, this study investigated the interaction of Zinc oxide (nZnO) nanoparticles with non-irradiated (NI) and UV-irradiated (UI) forms of the most abundant MPs in aqueous environments such as polypropylene (PP) and polystyrene (PS). SEM images revealed mechan...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Jayant Karwadiya Johannes L ützenkirchen Gopala Krishna Darbha Source Type: research

Submerged plant-biochar composite system exhibits effective control over residual organic pollutants in the benthic organisms of aquaculture ponds
This study assesses a submerged plant-biochar system's efficacy in removing HOCs from simulated freshwater aquaculture ponds. Vallisneria natans was planted in sediment with varying levels of wheat straw biochar, while Corbicula fluminea served as the targeted benthic organism. The bioaccumulation experiment identified the optimal biochar ratio for the Vallisneria natans-biochar system in controlling HOCs in aquaculture products. Analyses included final accumulation concentrations in benthic organisms, changes in freely-dissolved concentrations in aquaculture sediment, and a mass balance calculation to explore key factors ...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Juan-Ying Li Siyu Yao Zilong Mo Yabo Miao Yiqin Chen Wenhui He Ling Jin Wenzhong Tang Source Type: research

Association between long-term exposure to fine particulate matter and its chemical constituents and premature death in individuals living with HIV/AIDS
This study provides epidemiological evidence that SO42- and NH4+ increased the risk of ARD and that NH4+ increased the risk of ACD in PLWHA. Multi-constituent analyses further suggested that NH4+ may be a key component in increasing the risk of premature death in patients with HIV/AIDS. Individuals aged ≥65 with HIV/AIDS are more vulnerable to SO42-, and consequent ACD.PMID:38703976 | DOI:10.1016/j.envpol.2024.124052 (Source: Environmental Pollution)
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Shijie Zhu Faxue Zhang Xiaoxin Xie Wei Zhu Heng Tang Dingyuan Zhao Lianguo Ruan Dejia Li Source Type: research

Unravelling the microplastic menace: different polymers additively increase bee vulnerability
Environ Pollut. 2024 May 2:124087. doi: 10.1016/j.envpol.2024.124087. Online ahead of print.ABSTRACTMicroplastics (MPs) are growing and ubiquitous environmental pollutants and represent one of the greatest contemporary challenges caused by human activities. Current research has predominantly examined the singular toxicological effects of individual polymers, neglecting the prevailing reality of organisms confronted with complex contaminant mixtures and potential synergistic effects. To fill this research gap, we investigated the lethal and sublethal effects of two common MPs, polystyrene (PS - 4.8-5.8 μm) and poly(methyl ...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Federico Ferrante Elisa Pasquini Federico Cappa Lorenzo Bellocchio David Baracchi Source Type: research

Reproductive and endocrine-disrupting toxicity of Pyrogallol in catfish (Clarias gariepinus)
Environ Pollut. 2024 May 2:124104. doi: 10.1016/j.envpol.2024.124104. Online ahead of print.ABSTRACTEndocrine disruptors are synthetic or natural chemicals that can agonize/antagonize hormone receptors or can interfere with the production and secretion of hormones, leading to altered tissue histology and physiology. Pyrogallol is a contaminant widely distributed in aquatic environments that presents health risks to both humans and animals. However, the potential for endocrine disruption by pyrogallol, particularly in fish, are lacking. The purpose of this study was to shed light on how pyrogallol may affect hormone signall...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Mohamed Hamed Rashad E M Said Christopher J Martyniuk Hamdy A M Soliman Alaa El-Din H Sayed Alaa G M Osman Source Type: research

The synergistic effect of typical chiral organic acids and solution chemistry conditions on the transport of 2-arylpropionic acid chiral derivatives in porous media
This study evaluated the transport of 2-arylpropionic acid derivatives enantiomers (2-APA) in porous media under a variety of solution chemistry conditions via column packing assays. The results revealed the introduction of Malic acid (MA) enantiomers enhanced the mobility of 2-APA enantiomers, but the enhancement effect was different for different 2-APA enantiomers. Batch sorption experiments confirmed that the MA enantiomers occupied the sorption site of the quartz sand, thus reducing the deposition of the 2-APA enantiomer. Homo- or heterochirality between 2-APA and MA dominates the transport of 2-APA enantiomers, with h...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Duo Xu Yantian Ji Bowen Du Bo He Hongyang Chen Huimin Sun Xianqiang Yin Source Type: research

Long-Neglected Contribution of Nitrification to N < sub > 2 < /sub > O Emissions in the Yellow River
This study investigated the isotopic signatures of N2O, thereby quantifying the microbial source of N2O production and the degree of N2O reduction in the Yellow River. Although denitrification has long been considered to be the dominant pathway of N2O production in rivers, our findings indicated that denitrification only accounted for 18.3% (8.2%-43.0%) of the total contribution to N2O production in the Yellow River, with 50.2%-80.2% being concurrently reduced. The denitrification contribution to N2O production (R2 = 0.44, p < 0.01) and N2O reduction degree (R2 = 0.70, p < 0.01) were positively related to the dissolv...
Source: Environmental Pollution - May 4, 2024 Category: Environmental Health Authors: Shuo Wang Shengjie Li Mingfei Ji Jiarui Li Jilin Huang Zhengzhu Dang Zhuo Jiang Shuqi Zhang Xianfang Zhu Guodong Ji Source Type: research