Article
Environmental Sciences
Wen Fang, Danxing Yang, Paul N. Williams, Yi Yang
Summary: Land application of organic waste can sequester carbon to mitigate climate change, but its influence on the behavior of arsenic in rice-soil systems needs to be understood. This study investigated the impacts of rice straw and humic substance on arsenic speciation and bioavailability in paddy soil, revealing different responses between the two organic matter amendments.
Article
Environmental Sciences
Tiantian Wu, Pingping Liu, Xintian He, Hongmei Xu, Zhenxing Shen
Summary: The study revealed significant seasonal variations in heavy metal elements in atmospheric fine particulate matter in Xi'an, China, with Cd and Pb posing higher risks to the environment and human health. Pb, Cd, Ni, and Zn were identified as potential bioavailable elements with strong biological toxicity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Environmental Sciences
Tyler D. Sowers, Clay M. Nelson, Matthew D. Blackmon, Marissa L. Jerden, Alicia M. Kirby, Gary L. Diamond, Karen D. Bradham
Summary: This study investigated the influence of soil iron content and arsenic speciation on bioaccessibility measurements in contaminated soils. The findings suggested that the heterogeneity of soil Fe content and As speciation plays a significant role in determining variability in bioaccessibility measurements across different IVBA assays and gastrointestinal phases. Focusing on the interaction between As speciation and Fe precipitation chemistry may lead to a better understanding of factors influencing in vitro-in vivo correlations for As bioavailability.
JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART B-CRITICAL REVIEWS
(2022)
Article
Environmental Sciences
Naiyi Yin, Xiaolin Cai, Pengfei Wang, Run Feng, Huili Du, Yaqi Fu, Guoxin Sun, Yanshan Cui
Summary: This study found that gut microbiota can influence the bioavailability of arsenic in soil and is related to the intake and excretion of arsenic in the human body.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Meng Yang, Meichun Zhou, Xin Liu, Fengying Li, Mindong Chen, Huiming Li, Xin Qian, Feihu Li, Jun Zheng
Summary: The study assessed the spatial variation of arsenic species in PM2.5 in Nanjing, China, finding that As(V) was the dominant form. Spatial heterogeneity was moderate for As-total, As(III), and As(V), while DMAs(V) showed considerably high levels. Local road traffic contributed less to As concentration in PM2.5 compared to industrial emissions and biovolatilization sources.
AIR QUALITY ATMOSPHERE AND HEALTH
(2021)
Article
Environmental Sciences
Jennifer L. Griggs, Liang Chi, Nancy M. Hanley, Michael Kohan, Karen Herbin-Davis, David J. Thomas, Kun Lu, Rebecca C. Fry, Karen D. Bradham
Summary: Arsenic exposure can alter the gut microbiome in mice, and the composition of the microbiome can affect arsenic bioaccessibility. This study used a simulated gastrointestinal model to assess the effects of exposure to arsenic-contaminated soils on the gut microbiome and its impact on arsenic bioaccessibility. The results showed that exposure to arsenic did not change the gut microbiome composition in the colon phase, but it led to a decline in bacteria in the cecum phase. The variability in arsenic bioaccessibility may be influenced by the physicochemical properties of different soil types.
ENVIRONMENTAL POLLUTION
(2022)
Review
Environmental Sciences
Farzana Kastury, Hongbo Li, Ranju Karna, Aaron Betts, Kirk G. Scheckel, Lena Q. Ma, Tyler D. Sowers, Karen D. Bradham, Ganga M. Hettiarachchi, Albert L. Juhasz
Summary: This paper critically reviews the opportunities and challenges associated with the immobilization of lead (Pb) and arsenic (As) in contaminated soil. The major amendments used for reducing Pb and As exposure include phosphate, industrial by-products, metal oxides, organic matter, biochar, and treatment with iron sulphate. The efficacy of immobilization may vary depending on amendment type, Pb and As speciation in soil, and the approach used for assessment.
CURRENT POLLUTION REPORTS
(2023)
Article
Environmental Sciences
Yuling Liu, Haowei Zeng, Hanglv Zhou, Shijing Zhang, Baiqing Tie, Qingru Zeng, Anwei Chen, Si Luo
Summary: This study investigates the potential impacts of contaminated straw return on the availability of metal(loid)s and on microbial activity in paddy soils. The results show that returning contaminated rice straw to paddy fields may increase the risk of arsenic release, while the utilization of straw-decomposing microbial inoculants can accelerate straw decomposition and enhance the immobilization of cadmium.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Engineering, Environmental
Kewei Li, Jun Chen, Wenjin Sun, Hao Zhou, Yu Zhang, Hao Yuan, Aibin Hu, Dongsheng Wang, Weijun Zhang
Summary: This study investigates the molecular mechanisms of different biostabilized sludge addition on arsenic fraction transformation and bioavailability in tailings soil using co-occurrence network analysis based on Fourier-transform ion cyclone resonance mass spectrometry and high-throughput sequencing. The results show that sludge amendments decrease the bioavailable fraction of arsenic and promote humification of dissolved organic matter in soil. Biostabilized sludge increases the contents of labile compounds that provide nutrients for microbial metabolism and shape the microbial community composition into a more copiotrophic state, which in turn increases the abundance of As(V)-reducing bacteria and converts As(V) into As(III) and precipitates as As2S3.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Multidisciplinary Sciences
Ranju R. Karna, Matt R. Noerpel, Clay Nelson, Brittany Elek, Karen Herbin-Davis, Gary Diamond, Karen Bradham, David J. Thomas, Kirk G. Scheckel
Summary: The study demonstrates that remediation of contaminated soils with lead can effectively reduce the bioavailability of lead, minimizing the impact of lead exposure on children's health.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Environmental Sciences
Michael D. Dutton, Ryan Thorn, Wilson Lau, Luba Vasiluk, Beverly Hale
Summary: Oral bioaccessibility (BAc) serves as a useful surrogate for assessing oral exposure and risk, with nickel BAc shown to be a conservative measure of bioavailability (BAy) in soil. The relationship between oral BAy and BAc of nickel provided conservative estimates for exposure assessment, reflecting the underlying chemistry and speciation of the samples tested.
ENVIRONMENTAL POLLUTION
(2021)
Article
Food Science & Technology
Lena Ruzik, Malgorzata Jakubowska
Summary: The popularity of plant-based food products has grown in response to the increasing demand for plant foods. This study analyzed the total arsenic content and its species in plant-based beverages purchased in Poland. The research validated a method for analyzing arsenic using high-performance liquid chromatography combined with inductively coupled plasma mass spectrometry.
Article
Environmental Sciences
Nathan Kyle Smith, Erin Keltie, Ellen Sweeney, Swarna Weerasinghe, Kathleen MacPherson, Jong Sung Kim
Summary: Long-term exposure to environmental arsenic is linked to chronic diseases. Urinary studies have identified arsenic speciation as an important risk factor. This study establishes an analytical method for arsenic speciation analysis in toenails and shows significant differences in speciation profiles between certain cancer groups and the reference group.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Zhongqing Huang, Bingyu Chen, Jing Zhang, Changliang Yang, Jie Wang, Fei Song, Shigang Li
Summary: This study found that the presence of copper (Cu) can promote the absorption and accumulation of arsenic (As) by algae, which has significance in the possible bioremediation of arsenic pollution in aquatic environments.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Haijuan Wang, Suping Cui, Li Ma, Zhongzhen Wang, Hongbin Wang
Summary: The study revealed that aquatic plants accumulate arsenic mainly through biological uptake rather than physicochemical adsorption, and arsenate reductase plays a crucial role in arsenic detoxification in these plants, especially in those exposed to As(V).
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)