Article
Chemistry, Analytical
Zhan-Biao Ge, Ming-Ming Chen, Wan-Ying Xie, Ke Huang, Fang-Jie Zhao, Peng Wang
Summary: In this study, a novel approach utilizing a bacterial biosensor in conjunction with amylase hydrolysis was developed for high-throughput detection of inorganic arsenic (iAs) in rice grains. The biosensor demonstrated high specificity and was able to distinguish between arsenite [As(III)] and arsenate [As(V)]. The results obtained using this method were comparable to the standard technique of microwave digestion coupled with HPLC-ICP-MS. The biosensor exhibited excellent reproducibility and a high signal-to-noise ratio, with lower limits of detection than the maximum allowable level for infant rice supplements established by the European Union.
ANALYTICAL CHEMISTRY
(2023)
Article
Biochemical Research Methods
Silvia Wehmeier, Marc Preihs, Julia Dressler, Andrea Raab, Joerg Feldmann
Summary: Rice, a staple food, is known for its accumulation of inorganic arsenic (iAs), a known carcinogen. Field-deployable kits designed for water testing can screen iAs in rice, ensuring food safety without the need for laboratory analysis. By adapting the extraction process to include Cola, the field method becomes safer, cost-effective, and easier to handle. Testing on Austrian rice products showed that most samples were within the European Union's iAs limits.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Review
Environmental Sciences
Yi He, Jingyu Liu, Yanhua Duan, Xiaofei Yuan, Lulu Ma, Ratan Dhar, Yan Zheng
Summary: Approximately 94 to 220 million people worldwide are at risk of drinking well water containing arsenic > 10 pg/L, the WHO guideline value. To identify non-compliant domestic wells, assess health risks and reduce exposure, accurate and rapid on-site inorganic arsenic screening methods are desirable because all domestic wells worldwide need to be tested.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Environmental Sciences
Matthew C. Reid, Maria P. Asta, Lily Falk, Scott C. Maguffin, Vu Hoai Cong Pham, Hoang Anh Le, Rizlan Bernier-Latmani, Phu Le Vo
Summary: This study conducted a survey in the Mekong Delta and found no relationship between rice arsenic concentration and speciation with soil levels, but a strong correlation was observed between rice and groundwater arsenic concentrations. The study hypothesizes that surficial sediments with high concentrations of arsenic may serve as sources of arsenic to downgradient shallow aquifers.
Review
Engineering, Environmental
Amos Musyoki Mawia, Suozhen Hui, Liang Zhou, Huijuan Li, Javaria Tabassum, Changkai Lai, Jingxin Wang, Gaoneng Shao, Xiangjin Wei, Shaoqing Tang, Ju Luo, Shikai Hu, Peisong Hu
Summary: The accumulation of arsenic in rice plants poses a serious global health risk, with conventional methods having limited success in reducing arsenic accumulation. New technologies are being developed to address this issue.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Linjie Wang, Juanli Yang, Yue Yan, Yuan -Song Zhang, Xuechao Xu
Summary: A colorimetric sensing system based on cerium(IV) coordination polymer nanoparticles was proposed for sensitive and selective detection of As(V) in rice. By introducing different substances, As(V) detection was achieved, and the nanoparticles were transformed into test strips for convenient and rapid detection of inorganic arsenic in rice.
ANALYTICA CHIMICA ACTA
(2022)
Article
Soil Science
Linden B. Huhmann, Charles F. Harvey, Jason Gross, Anjal Uddin, Imtiaz Choudhury, Kazi M. Ahmed, John M. Duxbury, Benjamin Bostick, Alexander van Geen
Summary: The primary crop in Bangladesh is rice, and the rice yield is affected by arsenic buildup in the soil from irrigation. Soil testing using an inexpensive kit can help farmers identify high-arsenic areas for mitigation or crop switching decisions. By comparing kit measurements with X-ray fluorescence measurements, it was found that farmers can accurately determine arsenic levels in their fields using a Bayesian approach or linear regression.
Article
Environmental Sciences
Minh N. Nguyen, Anh T. Q. Nguyen, Stefan Dultz, Toshiki Tsubota, Lim T. Duong, Anh M. Nguyen, Nga T. T. Pham
Summary: The study reveals that silica phase in rice straw can encapsulate arsenic (As), leading to a tighter association between As and phytolith during open burning or heat-treatment, reducing As dissolution and delaying its cycle in rice ecosystems. The ban of on-site open burning to reduce air pollution will alter the handling routines of straw, impacting the cycle of straw phytolith and As route.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Applied
Lucas Suchecki Barnet, Dirce Pozebon, Valderi L. Dressler, Daiane Cioato
Summary: This study optimized a method for As speciation in rice and found that the concentrations of total arsenic, inorganic arsenic and DMA in brown and parboiled rice were higher than those in white rice. The average extraction efficiencies for different rice types were also determined.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Article
Water Resources
Monira Begum, Litian Li, Ellen Young, Manus Carey, Gang Li, Yong-Guan Zhu, Stephen Banwart, Andrew A. Meharg, Caroline Meharg
Summary: Investigating the impact of soil fertilization/amendments on arsenic speciation in paddy rice, rice was grown with different fertilizer sources in growth chambers. The study found that fertilizer source did not affect arsenic speciation concentration in grain, but significantly influenced the total grain arsenic and inorganic arsenic and dimethylarsinic acid (DMA) concentrations. Porewater analysis revealed that as anaerobic conditions set in, inorganic arsenic, phosphorus, and manganese concentrations decreased, while methylated arsenic species concentrations increased over time. Methanogenic archaea, sulfate-reducing bacteria, and Acidobacteria increased with time, while some Actinobacteria and Firmicutes increased due to pig slurry and then decreased over time.
EXPOSURE AND HEALTH
(2023)
Article
Plant Sciences
Cristina P. Fernandez-Baca, Anna M. McClung, Jeremy D. Edwards, Eton E. Codling, Vangimalla R. Reddy, Jinyoung Y. Barnaby
Summary: The study found that irrigation management practices and genotypic differences between rice cultivars influence arsenic accumulation. Seven QTLs associated with grain arsenic content were identified, with combinations of multiple QTLs significantly impacting arsenic concentrations. The study suggests that combining suitable irrigation practices and genotypic characteristics can help reduce arsenic exposure through rice consumption.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Felix Moran, Mario Herrero-Cervera, Sofia Carvajal-Rojas, Ester Marco-Noales
Summary: Huanglongbing (HLB) is a devastating disease that affects all commercial citrus species worldwide, and it is transmitted by psyllid vectors. This study presents a new real-time recombinase polymerase amplification (RPA) protocol that can detect the three bacteria species associated with HLB in both plant and insect samples. The protocol is accurate, sensitive, specific, and reliable, and it does not require specialized equipment, making it ideal for field use. The results indicate the potential of this new RPA protocol to be implemented as a reliable on-site detection kit for HLB.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Environmental Sciences
Hao Wang, Xin Wang, Bo Peng
Summary: In this study, rice husk with concentrated Si deposition was processed to increase soil Si availability and limit arsenic concentration in rice fields. The incorporation of Si-ash led to higher Si dissolution in the rhizosphere, resulting in decreased porewater As levels and increased As sequestration in soil solid phase and root plaque. Consequently, the concentration of inorganic As in white rice decreased significantly, highlighting the potential of Si-ash in mitigating arsenic accumulation in rice.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Analytical
Kamayani Vajpayee, Preet Desai, Prakshal B. Parekh, Hrishita C. Sitwala, Kanishkaa Suri, Hirak Ranjan Dashd, Ritesh K. Shukla
Summary: Detection of body fluid is crucial in forensic investigation, with blood being the most frequently encountered evidence at crime scenes. However, current methods using reagents for blood detection often show toxic behavior and false-positive results. This study aims to develop a state-of-the-art methodology using a fluorescein-derived dye, DCFDA, for preliminary blood detection and screening, without causing DNA damage or false-positive reactions.
MICROCHEMICAL JOURNAL
(2023)
Review
Food Science & Technology
Zheng Zhou, Guiling Yang, Pengcheng Xun, Qiang Wang, Kan Shao
Summary: This study quantitatively characterized the bioaccessibility of iAs in rice and identified its influencing factors through meta-analysis and regression analysis. The results showed that grain size and the inorganic-to-total proportion of arsenic are negatively associated with bioaccessibility.
FOOD REVIEWS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Steffen Heuckeroth, Tengetile N. Nxumalo, Andrea Raab, Joerg Feldmann
Summary: This study demonstrated the utility of a hard ionization source (ICP-MS/MS) as a fluorine-specific detector in combination with ESI-MS for the identification of fluorine-containing compounds. The simultaneous hyphenation of HPLC-ICP-MS/MS with HR-ESI-MS was used to evaluate biodegradation products of organofluorine compounds by sewage sludge.
ANALYTICAL CHEMISTRY
(2021)
Article
Geochemistry & Geophysics
J. Parnell, X. Wang, A. Raab, J. Feldmann, C. Brolly, R. Michie, J. Armstrong
Summary: Iron oxide grain coatings in red sandstones contain trace metals that are released upon dissolution of the coatings. The dissolved metals may constitute an ore-forming fluid, aiding in the formation of red bed ore deposits.
Article
Geochemistry & Geophysics
John Parnell, Temitope O. Akinsanpe, Joseph G. T. Armstrong, Adrian J. Boyce, John W. Still, Stephen A. Bowden, David Clases, Raquel Gonzalez de Vega, Joerg Feldmann
Summary: The symbiotic partnership between plants and fungi played a crucial role in nutrient uptake during the colonization of terrestrial surfaces. The Lower Devonian Rhynie Chert provides evidence for extensive phosphorus mobilization in plant debris that was extensively colonized by fungi. However, the ecosystem was also exposed to toxic elements from hot springs. The mineral component of the ecosystem modified the geochemistry of surrounding waters.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Chemistry, Analytical
Wladiana O. Matos, Francisco L. F. da Silva, Savarin Sinaviwat, Andrea Raab, Eva M. Krupp, Gisele S. Lopes, Ana R. A. Nogueira, Joerg Feldmann
Summary: This study evaluated the shrimp production cycle and focused on the accumulation of trace elements in shrimps and effluent. The results showed secure levels of elements in the final product, while the effluent from farms was found to be a significant source of contamination to the mangrove environment.
ENVIRONMENTAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Joerg Feldmann
ENVIRONMENTAL CHEMISTRY
(2023)
Article
Chemistry, Applied
Julia Monika Dressler, Andrea Raab, Silvia Wehmeier, Joerg Feldmann
Summary: A survey was conducted on 51 rice samples from the Austrian market, revealing that the average concentrations of inorganic arsenic in rice, rice products, and baby foods were 120 μg/kg, 191 μg/kg, and 77 μg/kg, respectively. Most rice samples had cadmium and lead levels below the European maximum levels. Upland grown rice from Austria exhibited low concentrations of inorganic arsenic (<19 μg/kg) and cadmium (<38 μg/kg).
FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE
(2023)
Article
Water Resources
Shaun Lancaster, Warren T. Corns, Eva M. Krupp, Joerg Feldmann
Summary: This article introduces a new analyzer for online monitoring of mercury in flue gas desulfurization wastewater, based on syringe injections of chemicals combined with gold amalgamation - atomic fluorescence spectrometry. The instrument has been validated and proven to meet the new legislation requirements.
WATER QUALITY RESEARCH JOURNAL
(2023)
Article
Engineering, Environmental
Viktoria Mueller, Andrew Kindness, Joerg Feldmann
Summary: Wastewater treatment plants are a significant source of PFAS in the environment. This study analyzed influent, effluent, and sludge from two wastewater treatment plants in Austria for target PFAS compounds and extractable organic fluorine content. The results showed that the sum of target PFAS increased from influent to effluent, with higher concentrations in effluent and sludge. Mass balance analysis suggested the biotransformation of non-targeted PFAS precursor compounds.
Article
Chemistry, Analytical
Rebecca Sim, Joerg Feldmann, Dagmar B. Stengel, Asta H. Petursdottir
Summary: This study investigates the origins of arsenosugars in common seaweed species. The results suggest that arsenosugars are a by-product of normal biological activity, rather than a detoxification pathway for inorganic arsenic.
ENVIRONMENTAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Zuzana Gajdosechova, Patricia Grinberg, Kevin Kubachka, Mesay Wolle, Andrea Raab, Joerg Feldmann, Rebecca Sim, asta H. Petursdottir, Tomas Matousek, Stanislav Musil, Ben Wozniak, Stephen Springer, Nausheen W. Sadiq, Hakan Gurleyuk, Calvin H. Palmer, Indumathi Pihillagawa Gedara, Zoltan Mester
Summary: The study aimed to investigate the issues in arsenic speciation analysis in biological matrices and validate the analytical methods. An international round-robin study showed that inadequate verification of the analyte's mass fractions in calibration standard solutions could introduce significant biases. The choice of extraction method had minimal impact on quantitation of arsenic species in plant and terrestrial biological tissues, but following a prescribed extraction method resulted in reduced uncertainties in complex samples such as marine animal tissues.
ENVIRONMENTAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Georg Raber, Sonja Weishaupt, Fabian Lappi, Michael Stiboller, Joerg Feldmann
Summary: A new analytical method using gas chromatography-mass spectrometry (GC-MS) was developed for the quantitative determination of arsenic-containing hydrocarbons (AsHCs) in marine samples. The novel method allows for compound independent quantification using triphenylarsine (TPA) as a commercially available standard, expanding the screening application for these toxic compounds in the environment.
ENVIRONMENTAL CHEMISTRY
(2023)
Article
Biochemical Research Methods
Silvia Wehmeier, Marc Preihs, Julia Dressler, Andrea Raab, Joerg Feldmann
Summary: Rice, a staple food, is known for its accumulation of inorganic arsenic (iAs), a known carcinogen. Field-deployable kits designed for water testing can screen iAs in rice, ensuring food safety without the need for laboratory analysis. By adapting the extraction process to include Cola, the field method becomes safer, cost-effective, and easier to handle. Testing on Austrian rice products showed that most samples were within the European Union's iAs limits.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Viktoria Mueller, Larissa Cristine Andrade Costa, Filipe Soares Rondan, Eleonora Matic, Marcia Foster Mesko, Andrew Kindness, Joerg Feldmann
Summary: This study analyzed ski waxes, snowmelts, and soil samples from family skiing areas in Alpine locations to investigate the distribution of PFAS in the environment. The researchers found a diverse pattern of PFAS in the analyzed media, with higher levels in skiing areas compared to non-skiing areas. Snowmelt was dominated by short-chained PFAS, while soil and wax contained both short and long-chained PFAS. The study highlights the importance of non-targeted analysis and extractable organic fluorine (EOF) for a better understanding of PFAS distribution.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)
Correction
Chemistry, Analytical
Marco Roman, Chiara Rigo, Hiram Castillo-Michel, Dagmar S. Urgast, Jorg Feldmann, Ivan Munivrana, Vincenzo Vindigni, Ivan Micetic, Federico Benetti, Carlo Barbante, Warren R. L. Cairns
Article
Chemistry, Analytical
Marco Roman, Chiara Rigo, Hiram Castillo-Michel, Dagmar S. Urgast, Jorg Feldmann, Ivan Munivrana, Vincenzo Vindigni, Ivan Micetic, Federico Benetti, Carlo Barbante, Warren R. L. Cairns