Article
Environmental Sciences
Eliza M. Kaltenberg, Kavitha Dasu, Lisa F. Lefkovitz, Jonathan Thorn, Denise Schumitz
Summary: Passive sampling methods, such as the newly developed PFAS INSIGHT sampler, offer advantages in obtaining time-integrated results and separating contaminant fractions for a better understanding of associated risks. This study demonstrates the effectiveness of the PFAS INSIGHT sampler in sampling ionic and non-ionic PFAS from water, with detection limits comparable to conventional water sample analysis. Laboratory characterization and field deployments show good agreement between passive sampler data and direct water sample measurements for PFAS concentrations.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Ying Wang, Xianhai Yang, Songyan Zhang, Tai L. Guo, Bin Zhao, Qiong Du, Jingwen Chen
Summary: A quantitative structure-activity relationship (QSAR) model was developed to predict the AhR-mediated luciferase activity of PAHs, with the EC50, free model meeting acceptable criteria for goodness-of-fit, robustness, and external predictive power. Molecular polarizability and aromaticity index were identified as effective predictors of AhR-mediated potencies of PAHs.
Article
Environmental Sciences
Na Yeong Kim, Bommanna G. Loganathan, Gi Beum Kim
Summary: Polycyclic aromatic hydrocarbons (PAHs), known for their recalcitrant properties and biotoxicity, pose serious environmental and health problems. Accurate determination of the bioavailable fraction is crucial for evaluating the toxic potential of these compounds. This study employed different types of passive samplers (LLDPE and LDPE) to determine the freely dissolved concentrations of PAHs using performance reference compounds in three different bodies of water. The results showed that LLDPE is a suitable alternative to LDPE for monitoring PAHs in both short-term and long-term studies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Michiel T. O. Jonker
Summary: This study investigated the impact of freezing, freeze-drying, and grinding on the C-free of HOCs in field sediments determined with SPME. Freezing and subsequent grinding of samples increased the C-free of PAHs up to a factor of 16. It is suggested that these sample manipulations should be avoided before ex situ C-free determinations to prevent overestimation of risks.
Article
Environmental Sciences
Muhammad Sohail, Syed Ali Musstjab Akber Shah Eqani, Habib Bokhari, Muhammad Zaffar Hashmi, Nadeem Ali, Ambreen Alamdar, Joel E. Podgorski, Dave Adelman, Rainer Lohmann
Summary: This study measured the freely dissolved OCPs and PCBs in the Indus River using polyethylene passive samplers. It found spatial variations in the distribution of these contaminants and identified agricultural fields, health sector, and industrial activities as major sources. The contaminated water intake from the river poses considerable cancer and non-cancer risks to human health.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Tariq Hussain, Dimitrios Athanasiou, Balaji Rao, Michelle Bejar, Magdalena Rakowska, Ilektra Drygiannaki, D. Bart Chadwick, Marienne A. Colvin, Nickolas T. Hayman, Gunther H. Rosen, Megan Otto, Brandon Steets, Robert Pitt, Danny D. Reible
Summary: This study focused on the influence of stormwater on sediment recontamination and biota bioaccumulation. The results showed that a majority of contaminants were associated with coarser particles, and that sediment contamination did not directly correlate with bioaccumulation in the studied organism.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Chemistry, Analytical
Kun Hong, Wenming Fu, Mengmeng Guang, Yaning Zhang, Bingxi Li
Summary: The study investigated the microwave heating performances of LDPE plastic particles under different microwave powers, feeding loads, and chamber volumes. Results showed that temperatures and heating rates of the plastic particles varied with these factors. Equations were proposed to estimate temperatures with relative errors between -18.04% and 9.10%.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Engineering, Environmental
Yuliana Rodriguez Lamar, Jose Noboa, Andres S. Torres Miranda, Daniela Almeida Streitwieser
Summary: The kinetic study focused on thermal cracking of polypropylene, high-density polyethylene, and low-density polyethylene showed that the liquid fraction yield was highest for LDPE, with properties similar to diesel, while PP was closer to gasoline.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Engineering, Environmental
Songjing Yan, Mandar Bokare, Upal Ghosh
Summary: This research compared direct porewater extraction and passive sampling for measuring the freely dissolved concentration of hydrophobic pollutants in sediment porewater (C-pw). The results showed that the direct water extraction method accurately quantified C-pw for low to moderately hydrophobic compounds and could assess the toxicity of PAHs. However, it may have detection limit challenges for strongly hydrophobic pollutants. A new extrapolation approach was proposed to address the uncertainty of C-pw measurement for strongly hydrophobic compounds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Thermodynamics
Hamzeh Shahrajabian, Seyed Amin Bagherzadeh, Mehdi Moghri, Vahid Karimi, Mehdi Jamali
Summary: The study aimed to create a mathematical model to predict the mechanical properties of nanocomposites and found that the model was consistent with experimental results.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Polymer Science
Pooja B. Jaiswal, Bhupendra K. Pushkar, Kamalakanta Maikap, Prakash Anna Mahanwar
Summary: This study investigated the preliminary degradation of packaging PE film composed of a blend of LLDPE and LDPE using enrichment cultures. The results showed that abiotic aging had a greater impact on the film than thermal aging, and the enrichment cultures were able to increase the oxidation level of the film. Biotic aging also resulted in the deterioration of the film's surface properties. Furthermore, the SEM analysis confirmed microbial growth and utilization of the PE material.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Food Science & Technology
Zhi Zhou Siew, Eric Wei Chiang Chan, Chen Wai Wong
Summary: This study aims to improve the barrier properties and mechanical strength of cellulose acetate (CA) by incorporating polyethylene glycol (PEG) 1450. The addition of PEG 1450 enhances the resistance to UV and water vapor, as well as the tearability. However, high concentrations of PEG 1450 result in increased opacity.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Engineering, Environmental
Songjing Yan, Mandar Bokare, Upal Ghosh
Summary: This research compared direct porewater extraction and passive sampling methods for measuring the concentration of hydrophobic pollutants in sediment. The results showed that direct water extraction provided accurate measurements for low to moderately hydrophobic compounds and could assess toxicity and bioaccumulation. However, detection limit challenges exist for strongly hydrophobic compounds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Prapatsorn Kaewkam, Apichaya Kanchanapaetnukul, Janista Khamyan, Nattapon Phadmanee, Kun-Yi Andrew Lin, Krisana Kobwittaya, Sanya Sirivithayapakorn
Summary: The study investigated the effects of TiO2 phases and UV light on photodegradation of LDPE films, finding that using TiO2-900°C with UV-C light resulted in the highest degradation efficiency. Analysis of crystal structure and elemental composition provided insights into the degradation mechanism of LDPE films.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Fabrizio Monaci, Stefania Ancora, Luca Paoli, Stefano Loppi, Frank Wania
Summary: Lichens play an important role in the cycling of mercury and can be used as indicators of mercury enrichment. By analyzing data from lichen transplants and passive air samplers, it was found that there is a linear relationship between mercury concentrations in lichen and gaseous elemental mercury concentrations in air. The combined use of passive sampling and lichen transplants allows for a more comprehensive understanding of the role of lichens in the deposition of atmospheric mercury to terrestrial ecosystems.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Dandan Duan, Wenlu Lan, Fengyuan Chen, Pei Lei, Hao Zhang, Jie Ma, Yang Wei, Ke Pan
Article
Environmental Sciences
Xiaokang Xin, Hong Zhang, Pei Lei, Wenzhong Tang, Wei Yin, Jian Li, Huan Zhong, Kefeng Li
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Engineering, Environmental
Jibao Liu, Xianglin He, Yufeng Xu, Zhuang Zuo, Pei Lei, Junya Zhang, Yongguang Yin, Yuansong Wei
Summary: The fate of mercury and MeHg during full-scale anaerobic digestion was investigated, showing that demethylation of MeHg was dominant and likely due to physico-chemical impacts. Microbial methylation or demethylation seemed negligible in terms of MeHg transformation during the anaerobic digestion process.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Dandan Duan, Pei Lei, Wenlu Lan, Tianshen Li, Hao Zhang, Huan Zhong, Ke Pan
Summary: This study investigated the concentrations of total mercury and methylmercury in sediments from seven mangrove forests in China, finding that litterfall plays a significant role in regulating the levels of mercury. The organic matter in the sediments was predominantly derived from litterfall, influencing the accumulation of MeHg. Furthermore, the addition of mangrove litter stimulated the production of MeHg under anaerobic conditions, suggesting that litterfall acts as a source of inorganic Hg and labile carbon, facilitating Hg methylation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Editorial Material
Environmental Sciences
Wei Li, Jianbo Shi, Lei Huang, Xiaosan Luo, Pei Lei
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Editorial Material
Environmental Sciences
Fuwei Pi, Zongyan Cui, Qiaoying Chang, Pei Lei
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Environmental Sciences
Jiating Zhao, Erwei Wu, Bowen Zhang, Xu Bai, Pei Lei, Xiuwen Qiao, Yu-Feng Li, Bai Li, Gang Wu, Yuxi Gao
Summary: Through sampling and analyzing surface sediments in FRS, this study identified 12 metal pollutants mainly distributed in Xingtai City's river reaches, posing potential health risks. It was found that Cd accumulates strongly in sediment in sections such as the Ming River and Aixinzhuang dam, potentially causing ecological risks.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Pei Lei, Jin Zhang, Jinjie Zhu, Qiaoguo Tan, Raymond W. M. Kwong, Ke Pan, Tao Jiang, Mohammad Naderi, Huan Zhong
Summary: This study reveals the impact of algal organic matter on microbial Hg methylators and MeHg production, showing that bioavailable components of AOM can increase the abundance and activity of methanogens, leading to enhanced levels of dissolved MeHg.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Environmental Sciences
Hong Zhang, Wenzhong Tang, Weidong Wang, Wei Yin, Honglei Liu, Xiaomin Ma, Yiqi Zhou, Pei Lei, Dongyang Wei, Litian Zhang, Cao Liu, Jinmiao Zha
Summary: Constructed wetlands have been introduced and developed in China for environmental engineering over the past three decades, showing significant improvement and moving towards diverse development patterns. However, their distribution is still limited by socio-economic factors and climatic conditions. Future research and management focusing on lifecycle studies are needed to formulate better strategies.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2021)
Article
Environmental Sciences
Pei Lei, Chao Tang, Yongjie Wang, MengJie Wu, Raymond W. M. Kwong, Tao Jiang, Huan Zhong
Summary: This study examines the impact of sulfur input on MeHg production in paddy soils. The results show that different types and amounts of sulfur input can increase MeHg levels, primarily due to increased Hg mobility. Additionally, sulfate input can increase MeHg levels in soils with low ambient sulfate levels, but has no effect on high-sulfate soils.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Wenqin Wang, Yu Gong, Ben K. Greenfield, Luis M. Nunes, Qianqi Yang, Pei Lei, Wenbo Bu, Bin Wang, Xiaomiao Zhao, Lei Huang, Huan Zhong
Summary: The study revealed that in China, rice is more significant than fish in contributing to human dietary exposure risk of metal(loids), especially the carcinogenic risk from iAs in rice warrants particular attention.
ENVIRONMENT INTERNATIONAL
(2021)
Review
Environmental Sciences
Chengjun Li, Jun Shen, Jin Zhang, Pei Lei, Yaqi Kong, Jichao Zhang, Wenli Tang, Tianyu Chen, Xin Xiang, Shuxiao Wang, Wei Zhang, Huan Zhong
Summary: Research on mercury has been hot due to poisoning incidents, but a biased view may occur without considering long-term effects. Mercury may have mysterious impacts in critical intervals, and achieving safe applications relies on understanding ecosystem dynamics. Swift actions to mitigate impacts on the mercury cycle from human activities are crucial for maintaining sustainability.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Environmental Sciences
Hong Li, Yunyun Li, Wenli Tang, Huan Zhong, Jiating Zhao, Xu Bai, Shengnan Sha, Diandou Xu, Pei Lei, Yuxi Gao
Summary: Mercury sulfides, previously considered highly inert, have been found to be reactive and bioavailable in paddy soils. By extracting dissolved mercury from mercury sulfide particles in rice paddies using sodium thiosulfate, a strong positive correlation was found between the extracted mercury and soil methylmercury levels. This method shows potential for predicting mercury bioavailability in paddy soils.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Environmental Sciences
Chao Wang, Hong Zhang, Pei Lei, Xiaokang Xin, Aijing Zhang, Wei Yin
Summary: As the largest inter-basin water transfer project in the world, the South-to-North Water Diversion Project plays a crucial role in addressing the water crisis in North China. This study examines the impact of dissolved organic matter (DOM) derived from planktonic algae on the water quality along the main channel of the middle route. The findings indicate a significant correlation between algal density and COD Mn levels, suggesting that controlling algal density is essential for maintaining excellent water quality.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Article
Engineering, Environmental
Siqi Zhang, Yongguang Yin, Peijie Yang, Cong Yao, Shanyi Tian, Pei Lei, Tao Jiang, Dingyong Wang
Summary: This study investigated the impact of changes in DOM characteristics driven by end-member mixing on DOM biogeochemical reactivities. The results showed that the variations of DOM characteristics significantly affected its biogeochemical reactivities, but not all parameters and reactivities followed the conservative mixing behavior. Therefore, the effect of end-member mixing should be evaluated in the given reactivity instead of generalization.