Article
Environmental Sciences
Enrique Lozano-Bilbao, Gonzalo Lozano, Alba Jurado-Ruzafa, Arturo Hardisson, Carmen Rubio, Soraya Paz, Veronica Martin, Angel J. Gutierrez
Summary: Mercury is a toxic metal that easily accumulates in organisms and spreads through the food chain. The concentration of mercury in Scomber colias has significantly decreased over the past few decades, possibly due to environmental regulations and measures to reduce mercury emissions. Additionally, historical collections of biological specimens are valuable sources of information for monitoring the effectiveness of legislative measures on the environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
M. M. Subasinghe, B. K. K. K. Jinadasa, A. N. Navarathne, S. Jayakody
Summary: This study assessed the health risks posed by selected metals in cultured and wild Crassostrea madrasensis in Sri Lanka. The concentrations of metals in the oysters varied on a monthly basis, with significant variations between cultured and wild oysters for zinc and copper. While the concentrations of most metals were below international standards, lead, cadmium, arsenic, and zinc exceeded the limits. Weekly intake of mercury, copper, iron, and zinc from C. madrasensis did not exceed the provisional tolerable intake, but cadmium intake exceeded the limit, indicating potential carcinogenic effects for long-term consumption.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Environmental
Eduard Villagrasa, Cristina Palet, Irene Lopez-Gomez, Diana Gutierrez, Isabel Esteve, Alejandro Sanchez-Chardi, Antonio Sole
Summary: The study analyzed the response of Ochrobactrum anthropi DE2010 to heavy metal exposure, including tolerance, removal capacity, and metal localization patterns. The research found that the bacterium exhibited high resistance to the tested metals, and demonstrated good removal and metal sequestration capabilities.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Environmental Sciences
Eepsita Priyadarshini, Sushree Sangita Priyadarshini, Brian G. Cousins, Nilotpala Pradhan
Summary: The adverse outcome of industrialization is the contamination of the ecosystem with toxic heavy metals. These metals negatively affect microbial systems, but microbes have developed resistance mechanisms such as biosorption, bioaccumulation, biotransformation, and efflux of metal ions. Fungal cells respond to metal exposure by forming metal nanoparticles, which can immobilize metals in less toxic forms. Understanding how fungi resist metal toxicity can lead to the development of techniques for detoxification and removal of metals from the environment.
Article
Environmental Sciences
Yutong Zong, Qing Xiao, Zaffar Malik, Yuan Su, Yefeng Wang, Shenggao Lu
Summary: The study found that biochar can effectively control the bioavailability and translocation of heavy metals in soil, reducing their accumulation in crops. Application of biochar led to an increase in soil pH, organic carbon, and cation exchangeable capacity, with rice husk biochar showing the most significant effects. The sequential extraction also showed changes in the exchangeable and residual fractions of heavy metals under biochar treatments.
Article
Environmental Sciences
Gabriel Oliveira de Carvalho, Rodrigo Ornellas Meire, Adan Santos Lino, Debora Regina Yogui, Arnaud Leonard Jean Desbiez, Joao Paulo Machado Torres, Olaf Malm
Summary: This study investigated the mercury (Hg) levels in the fur of giant anteaters in the state of Mato Grosso do Sul, Brazil. The study found that juveniles had lower Hg concentrations than adults, and that the stage of carcass decomposition and vehicular traffic volume did not influence Hg levels. A spatial pattern of higher Hg concentrations in the eastern-southeastern region of the state was identified, potentially due to anthropogenic impacts.
Article
Biodiversity Conservation
Yanju Ma, Wen Zheng, Yuxin An, Lianghua Chen, Qing Xu, Aiwu Jiang
Summary: The study found that the mercury concentrations in bird feathers from Northeast China were not high, but there were significant differences among different species, with brown shrikes having the highest mercury content. There was a strong correlation between mercury levels in primary and tail feathers, which can be used for monitoring mercury levels.
ECOLOGICAL INDICATORS
(2021)
Article
Construction & Building Technology
Chunhua Xia, Xueying Zhang, Linghui Xia
Summary: The study found that POSB has a good adsorption effect on heavy metal ions in water, especially Ni(II), Zn(II), and Mn(II). The control of OS content, adsorption time, and water pH values is important in the manufacturing process of POSB.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Environmental Sciences
Eugenia Rolon, Juan Jose Rosso, Ezequiel Mabragana, Pamela Tripodi, Marta Bavio, Camila Bidone, Alejandra V. Volpedo, Esteban Avigliano
Summary: This research assessed the accumulation and distribution of major and trace elements in water, sediments, muscle, and gills of native fishes in two protected areas of the Atlantic Rainforest. It found that some elements exceeded international guidelines for aquatic biota and human consumption. Bioaccumulation factors were higher in gills than in muscle, and certain fish species were identified as macroconcentrators of specific elements. The study concluded that there is no risk from chronic consumption of water or fish.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Abdus Samad, Dulon Roy, Md. Mahmodul Hasan, Khondoker Shahin Ahmed, Smita Sarker, Md. Muzammel Hossain, Md. Shajahan
Summary: The concentrations of Cu, Pb, Fe, and Zn in hen eggs exceeded the maximum permissible limit, posing potential health risks. However, the evaluated foodstuffs showed low or less risk of exposure to heavy metals, indicating that they can be consumed with minimal risk.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Environmental Sciences
Si-Yi Liu, Qiang Pu, Tian-Jin Mo, Guixiang Peng, Yan Sun, Yulong Zhang, Jinjin Wang, Yongtao Li, Hui-Juan Xu
Summary: This study screened and investigated phosphate-solubilizing bacteria capable of Cd(II) immobilization to find efficient methods of enhancing phosphorus uptake and reducing cadmium uptake by plants. Bacillus sp. B19 was isolated from cadmium-contaminated soil and showed the ability to solubilize phosphate while immobilizing Cd(II). Factors such as initial pH, contact time, and initial Cd(II) concentration affected the biosorption of Cd(II) by Bacillus sp. B19. The findings also provided insights into the kinetics and mechanisms of Cd(II) biosorption by strain B19 using various techniques such as zeta potential, SEM, and FTIR.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Engineering, Environmental
Nan Geng, Yinfeng Xia, Debao Lu, Yu Bai, Yufeng Zhao, Hui Wang, Lingxiao Ren, Cundong Xu, Ertian Hua, Guojin Sun, Xiaoyang Chen
Summary: Submerged macrophytes and their epiphytic biofilms play important roles in metal transport and transformation in aquatic environments. This study collected samples from the moat in the industrial area of Hangzhou to analyze the bacterial community structure and the contribution of epiphytic biofilms to heavy metal accumulation. The results showed that the bacterial community structure was significantly influenced by TN concentrations and that the epiphytic biofilms were dominated by heavy metal pollutant-resistant bacteria such as Aeromonas, Acinetobacter, and Pseudomonas. The study also found that the epiphytic biofilms had higher Cr accumulation compared to leaves, while leaves had higher Cu accumulation than the biofilms. The findings suggest that the epiphytic biofilms can effectively accumulate metals, particularly Cr, and can be a potential method for metal remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Xuekui Niu, Yanming Jia, Xueyong Wu, Shuting Wang, Juan Hou, Weihua Zhang
Summary: Indigenous plants growing in mining spoils have attracted great interest for phytoremediation. Metal concentrations in plants and rhizosphere soils were analyzed for six plant species popular in the mine slag heaps. The results showed that the adaptation strategies varied among the species.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2023)
Article
Environmental Sciences
Jian Ding, Shengnan Wang, Wenzhi Yang, Huijie Zhang, Fei Yu, Yingmei Zhang
Summary: The bioaccumulation of heavy metals in tree sparrows from polluted and unpolluted sites was investigated. The concentrations of heavy metals were significantly higher in birds from the polluted site. Adult birds had higher metal concentrations compared to nestlings and juveniles. Heavy metals were mainly accumulated in feathers, and correlations between metals in different organs and tissues varied with age.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Rui Liu, Weiwei Jiang, Fujuan Li, Yulong Pan, Chunhui Wang, Hua Tian
Summary: This study found that heavy metals in the marine ecosystem of the eastern sea area of Shandong Peninsula in China mainly come from terrestrial sources, with higher concentrations in sediments and seawater. Concentrations of heavy metals in mollusc were generally higher and poses potential risks.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)