Article
Environmental Sciences
Jae-Kyoung Moon, Pil-Gon Kim, Keum Young Lee, Jung-Hwan Kwon, Yongseok Hong
Summary: An equilibrium passive sampler made of PDMS fiber was developed to measure VOCs in soil vapor. ePTFE was used to protect PDMS from pollution and direct contact with soil components. The equilibrium partition coefficients of VOCs between PDMS, gas, and water were measured.
Article
Environmental Sciences
Pil-Gon Kim, Abhrajyoti Tarafdar, Keum Young Lee, Jung-Hwan Kwon, Yongseok Hong
Summary: This study characterized the potential human health risks associated with soil vapor intrusion and volatile organic compounds (VOCs) exposure. By quantifying gaseous VOCs in soil pores using a passive sampling technique, the researchers found significant variations in the concentration of gaseous tetrachloroethene (PCE) in soil pores, which depended on groundwater PCE concentrations. The study also highlighted the importance of conducting vapor intrusion risk assessments using passive soil gas sampling for accurate risk characterization. Furthermore, the results demonstrated the potential for wider application of passive sampling techniques in environmental studies due to their lower cost and labor intensity compared to traditional methods.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Shuai Xie, Eric Suuberg
Summary: This research investigated the sorption capacities of trichloroethylene (TCE) vapors on building materials in different temperature and humidity conditions, with a focus on vapor intrusion investigations. The study found that the sorption capacities of materials like drywall and cinderblock significantly decreased at elevated humidity levels. These findings highlight the importance of considering temperature and humidity variations in vapor intrusion investigations.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Yang Wang, Shijie Wang, Lin Jiang, Lin Ma, Xiaoyan Li, Maosheng Zhong, Wenyu Zhang
Summary: This study used Monte Carlo simulations to analyze the effects of soil properties on the derivation of unified national soil screening levels (NSSLs). The results showed that NSSLs were insufficient in identifying contaminated sites in the south, central, and northwest regions, while they were too conservative in screening out sites that required no further action in the east and northeast regions. The findings of this study could contribute to more scientific and effective soil quality management in other large countries.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Wenjun Zhu, Xiao Chen, Chuang Li, Zhongmin Liu, Changhai Liang
Summary: The controllable fabrication of hierarchical Co3O4 materials with various morphologies was reported in this study. Among them, the book-shaped Co3O4-B exhibited the highest catalytic activity in propane oxidation, showing promising potential for practical applications.
JOURNAL OF CATALYSIS
(2021)
Review
Environmental Sciences
Kunlong Hui, Yuan Ying, Xi Beidou, Tan Wenbing
Summary: The soil environment is a key location for the production, release, and absorption of atmospheric pollutants, including nitrogen oxides (NOx) and volatile organic compounds (VOCs), which are the main chemical precursors for ground-level ozone formation. Current research primarily focuses on emissions from industrial sources, forest vegetation, and urban vehicle exhaust, neglecting the role of the soil environment in NOx and VOCs emissions. Therefore, it is necessary to study the environmental factors related to NOx and VOCs release in the soil and improve our understanding of emission fluxes to effectively control ground-level ozone pollution.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Engineering, Civil
Xinyue Liu, Enze Ma, You-Kuan Zhang, Xiuyu Liang
Summary: This study developed an analytical model for vapor intrusion with fluctuated water table, showing that fluctuated water table affects VOC dynamics by changing vapor migration path length and delivering residual VOCs into the unsaturated zone. The analytical solution matches well with experimental data and could be a simple tool for vapor intrusion risk assessment.
JOURNAL OF HYDROLOGY
(2021)
Article
Green & Sustainable Science & Technology
Yancui Liang, Yilin Li, Yu Lin, Xinya Liu, Yunfan Zou, Peirong Yu, Yuying Zeng, Xiuqi Wang, Yanbo Wang, Constance Van Horne, Yigal Achmon
Summary: This study is the first attempt to use separated fish residues as a soil amendment for soil biosolarization (SBS), and it has shown that fish waste residues can be used to improve soil respiration and can act as indicators for the SBS process through their volatile organic compounds (VOCs) profile.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Water Resources
Q. G. Bingham, C. Lutes, R. Grand, S. Quadri, R. Dollhopf, N. Posavatz, E. Birkett
Summary: Groundwater and soil contamination with shallow trichloroethene (TCE) in Michigan led to a vapor intrusion investigation in condominium units. A gas chromatograph/mass spectrometer (GS/MS) was used to successfully identify a bedroom furniture set as the source of indoor TCE. The study findings suggest that emissions from finished furniture products can lead to TCE concentrations in indoor air that exceed regulatory guidelines.
GROUND WATER MONITORING AND REMEDIATION
(2023)
Article
Environmental Sciences
Sa Liu, Eileen Ziyao Yan, Mary Ellen Turyk, Sankalp Srisai Katta, Arteen Fazl Rasti, Jung Hyun Lee, Marwan Alajlouni, Thomas Edward Wallace, Wade Catt, Elizabeth Ann Aikins
Summary: This study evaluated the extent and level of tetrachloroethylene (PCE) contamination in the Martinsville community. PCE was detected in exhaled breath and tap water samples from residents living both inside and outside contaminated areas. Targeted measures should be taken to reduce exposure among highly exposed groups and address moderately elevated exposures in the community.
ENVIRONMENTAL POLLUTION
(2022)
Article
Multidisciplinary Sciences
Dominique Grandjean, Caroline Elie, Capucine Gallet, Clotilde Julien, Vinciane Roger, Loic Desquilbet, Guillaume Alvergnat, Severine Delarue, Audrey Gabassi, Marine Minier, Laure Choupeaux, Solen Kerneis, Constance Delaugerre, Jerome Le Goff, Jean-Marc Treluyer
Summary: The study evaluates the diagnostic accuracy of canine olfaction in non-invasive detection of SARS-CoV-2 infection. The results show that canine detection has a high sensitivity and can be used as an alternative method in mass screening.
Article
Agriculture, Multidisciplinary
Jingwen Li, Zhixin Wang, Jonathan Crane, Yu Wang
Summary: This study investigated the contribution of volatile and non-volatile metabolites to the flavor variation of five carambola cultivars using a combination strategy of GC-MS/O-based volatilomics and LC-MS-based metabolomics. Several significant flavor-related pathways were identified, including amino acid biosynthesis or metabolism, terpenoids, fatty acids, sugar and organic acid, and flavonoids. The results showed that flavor traits of different carambola cultivars differed due to the up- or downregulation of metabolites in the flavor-related pathways. This study provides a valuable reference for breeders and researchers interested in the regulation of flavor.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Editorial Material
Plant Sciences
Sumit Ghosh
Summary: Forest vegetation emits terpene enantiomers, but their emission mechanisms and ecological functions are not well understood. In a study on tropical rainforest ecosystem, Byron et al. observed distinct diel trends and sources of enantiomer emission, as well as a significant change in (-)-alpha-pinene emission during severe drought, potentially promoting cloud formation.
TRENDS IN PLANT SCIENCE
(2023)
Review
Agronomy
Vikash Kumar, Nikhil Raghuvanshi, Abhay K. Pandey, Abhishek Kumar, Emily Thoday-Kennedy, Surya Kant
Summary: Soil salinity is a major constraint for agriculture globally, impacting plant growth, soil properties, and soil microorganisms. Traditional approaches to address salinity problems are expensive and time-consuming. Halotolerant plant growth-promoting rhizobacteria (HT-PGPR) have been recognized for their beneficial effects in promoting plant growth and mitigating the negative impacts of salinity stress. HT-PGPR maintain ion homeostasis, increase nutrient availability, and produce secondary metabolites, osmoprotectants, growth hormones, and volatile organic compounds. Understanding and applying suitable HT-PGPR in agriculture can play a crucial role in reducing the adverse effects of salinity stress and improving crop productivity.
Review
Environmental Sciences
Qi Pan, Qing-Yu Liu, Jing Zheng, Yan-Hong Li, Song Xiang, Xiao-Jie Sun, Xiao-Song He
Summary: Gas emitted from landfills contains a large quantity of volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs), some of which are carcinogenic, teratogenic, and mutagenic. The global hazards of VOCs and SVOCs in landfill gas to human health remain unclear. To quantify the global risk distributions of these pollutants, the composition and concentration data of VOCs and SVOCs from 72 landfills in 20 countries were collected and their human health risks were assessed. Organic compounds in landfill gas primarily result from the biodegradation of natural organic waste or the emissions and volatilization of chemical products. The respiratory system, particularly the lung, was found to be the major target organ of VOCs and SVOCs, with additional adverse health impacts ranging from headache and allergies to lung cancer. Aromatic and halogenated compounds were the primary sources of health risk, while ethyl acetate and acetone from the biodegradation of natural organic waste also exceeded the acceptable levels for human health. Overall, VOCs and SVOCs affected residents within 1,000 m of landfills. Air temperature, relative humidity, air pressure, wind direction, and wind speed were the major factors that influenced the health risks of VOCs and SVOCs. Currently, landfill risk assessments of VOCs and SVOCs are primarily based on respiratory inhalation, with health risks due to other exposure routes remaining poorly elucidated. In addition, potential health risks due to the transport and transformation of landfill gas emitted into the atmosphere should be further studied.
ENVIRONMENT INTERNATIONAL
(2023)