Article
Chemistry, Analytical
Raquel Gonzalez de Vega, Samantha Goyen, Thomas E. Lockwood, Philip A. Doble, Emma F. Camp, David Clases
Summary: This study investigates various strategies to enhance the detection and characterization of microplastics in complex matrices like seawater. It is found that ICP-MS/MS methods can improve size detection limits, reduce background signal, and increase selectivity.
ANALYTICA CHIMICA ACTA
(2021)
Review
Chemistry, Analytical
Andrei R. Timerbaev, Olga Kuznetsova, Bernhard K. Keppler
Summary: This article critically analyzes the current and emerging capabilities of analytical methods for the analysis and characterization of ENPs in seawater in the past decade, focusing on the importance of experimental strategies to avoid the high-salt matrix effect and enrich the nanoparticulate fraction before analysis. The methods rely on elemental mass spectrometry and single-particle mode to characterize the transformation of ENPs in seawater.
Article
Chemistry, Analytical
Xiangwei Tian, Haowen Jiang, Meng Wang, Wenbin Cui, Yingying Guo, Lingna Zheng, Ligang Hu, Guangbo Qu, Yongguang Yin, Yong Cai, Guibin Jiang
Summary: To meet the demand for multi-element/isotope analysis at the single nanoparticle (NP) or cell level, different types of inductively coupled plasma mass spectroscopy (ICP-MS) have been used to simultaneously monitor multiple mass-to-charge ratios in single-particle/cell ICP-MS (SP/SC-ICP-MS) analysis. Systematic evaluation and comparison of the performance of these techniques are urgently required.
ANALYTICA CHIMICA ACTA
(2023)
Article
Geochemistry & Geophysics
Alexander Simpson, Sarah Gilbert, Renee Tamblyn, Martin Hand, Carl Spandler, Jack Gillespie, Angus Nixon, Stijn Glorie
Summary: Lu-Hf geochronology is a powerful method for constraining the temporal evolution of geological systems, with traditional methods requiring time-consuming chemical separations and potentially losing the textural context of analysed minerals. In contrast, the in-situ approach offers rapid analysis with high spatial resolution, but is hindered by isobaric interferences of Yb-176 and Lu-176 on Hf-176.
Article
Environmental Sciences
Nadine Belkouteb, Henning Schroeder, Julia Arndt, Jan G. Wiederhold, Thomas A. Ternes, Lars Duester
Summary: Triple-quadrupole inductively coupled plasma mass spectrometry (ICP-QQQ-MS) is a unique analytical technique used for determining total element concentrations in various matrices, with wide linear range and short analysis times. By applying this method in future river water monitoring networks, a better understanding of natural transport processes and global biogeochemical element cycles can be achieved, and the number of methods can be reduced.
Article
Chemistry, Analytical
Yan Xu, Beibei Chen, Man He, Zewei Cui, Bin Hu
Summary: This study developed an all-in-one microfluidic chip system for efficient separation and quantitative analysis of rare CTCs and their ASGPR surface biomarkers.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yan Xu, Beibei Chen, Man He, Zewei Cui, Bin Hu
Summary: This study developed an all-in-one microfluidic chip system combined with single cell-inductively coupled plasma mass spectrometry (SC-ICP-MS) for efficient separation and quantitative analysis of circulating tumor cells (CTCs). The method showed high separation efficiency and purity, allowing for accurate analysis of surface receptors on CTCs, which can be useful for studying targeted drug delivery in cancer therapy.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Guosheng Yang, Jian Zheng, Eunjoo Kim, Shuai Zhang, Hatsuho Seno, Munehiko Kowatari, Tatsuo Aono, Osamu Kurihara
Summary: A method for urinary bioassay of ultra-trace Np-237 and Pu isotopes using SF-ICP-MS and ICP-MS/MS was developed in this study. The method showed high decontamination efficiency and sensitivity, making it suitable for screening activities in unexpected actinide exposure. Validation experiments and practical applications confirmed the effectiveness of the method.
ANALYTICA CHIMICA ACTA
(2021)
Article
Food Science & Technology
Ruth Vanderschueren, Jasmien Doevenspeck, Florence Helsen, Sandra Mounicou, Jakob Santner, Jan A. Delcour, Eduardo Chavez, Erik Smolders
Summary: Previous studies have shown that the cadmium (Cd) concentration in cacao nibs decreases during fermentation, but only at a sufficiently low pH. However, this study found that acid amendments were ineffective in reducing the total Cd concentration in lab-scale experiments. Instead, decreasing the pH increased the water-extractable fraction of Cd. When embedded in a fermentation box, single pod derived beans showed a 1.25-fold decrease in Cd concentration after four days of fermentation. Visualization of the Cd gradient within beans revealed that fermentation enhances Cd mobility in the nibs.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Food Science & Technology
Hong-lin Liu, Qing Meng, Xin Zhao, Yu-long Ye, Hua-rong Tong
Summary: The study utilized multi-element and stable isotopes analysis combined with chemometrics to establish a model for discriminating the authenticity of teas, and through validation and testing, confirmed the high accuracy and feasibility of this method in identifying the authenticity of teas.
Article
Biochemical Research Methods
Shaun T. Lancaster, Thomas Prohaska, Johanna Irrgeher
Summary: This study proposes the use of nitrous oxide (N2O) as a non-corrosive and non-toxic alternative for calcium isotope analysis. Instrument performance testing shows that N2O can achieve equivalent detection limits and background concentrations compared to traditional gases. Further testing with synthetic standards highlights N2O's advantage in separating interferences from potassium and magnesium.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Francesca Ferraris, Carlos Adelantado, Andrea Raggi, Sara Savini, Mohammed Zougagh, Angel Rios, Francesco Cubadda
Summary: A method using ICP-MS and microwave-assisted acid digestion was developed for the determination of total titanium in food and food supplements. The method was successfully validated and enables rapid screening of food samples for the presence of TiO2 particles.
Article
Chemistry, Multidisciplinary
Benjamin T. T. Manard, Veronica C. C. Bradley, C. Derrick Quarles, Lyndsey Hendriks, Daniel R. R. Dunlap, Cole R. R. Hexel, Patrick Sullivan, Hunter B. B. Andrews
Summary: This study developed an innovative autosampler to mix and transport the blanks, standards, and samples into a high-efficiency single particle introduction system for the analysis of gold nanoparticles (Au NPs) and silver shelled gold core nanospheres (Au/Ag NPs). The optimized transport efficiency into the inductively coupled plasma-time of flight-mass spectrometry (ICP-TOF-MS) was more than 80%, allowing for high-throughput sample analysis. The methodology displayed good long-term reproducibility, with a relative standard deviation (%RSD) of 3.54% for in-run variation and 9.52% for day-to-day variation.
Review
Biochemistry & Molecular Biology
Bernhard Michalke
Summary: Element analysis in clinical or biological samples plays a crucial role in clinical diagnostics, drug development, and drug-effect monitoring. By combining sophisticated sample delivery systems with ICP-MS, it is possible to gain deeper insights into the specific forms of element binding, the actual redox state, and the spatial distribution in tissue or single cells. This can provide a better understanding of biological processes and their dynamics.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Nancy Lara-Almazan, Graciela Zarazua-Ortega, Pedro Avila-Perez, Carlos Eduardo Barrera-Diaz, Alberto Cedillo-Cruz
Summary: Phytochelatins are peptides in plants that help maintain homeostasis and detoxify heavy metals. Researchers have proposed them as potential biomarkers for aquatic pollution. A new method using UPLC-MS was validated for accurate and precise quantification of PCs in aquatic plants, with excellent linearity and precision.
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
Reproductive Biology
Peter J. Boogaard, Jochen Buschmann, Rainer Fuhst, Katharina Bluemlein, Wolfgang Koch, Dirk Schaudien, Katharina Schwarz, Christine McAlinden, Lize Deferme, Mathieu Vaissiere, Hans B. Ketelslegers, Anna Steneholm
Summary: Rats exposed to fumes of oxidised asphalt did not show prenatal developmental toxicity, however, high-dose exposure resulted in effects on maternal body weight gain, food consumption, lung weights, and histopathological changes in lungs and the upper respiratory tract.
REPRODUCTIVE TOXICOLOGY
(2021)
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
Environmental Sciences
Katharina Bluemlein, Norman Nowak, Birthe Ellinghusen, Susanne Gerling, Philipp Badorrek, Tanja Hansen, Jens M. Hohlfeld, Roland Paul, Sven Schuchardt
Summary: Occupational exposure to veterinary antibiotics in hen houses at poultry feeding farms, particularly enrofloxacin, was investigated in this study. The pharmacokinetics of enrofloxacin and its metabolite ciprofloxacin were studied in six healthy volunteers using dermal, oral, and inhaled intake routes. Physiologically based pharmacokinetic (PBPK) modeling was used but showed underestimation of elimination rate, indicating limitations in available information and physico-chemical properties of the drug. The results suggested that oral uptake, including airborne enrofloxacin and direct hand-mouth contact, was the major source of occupational exposure in hen houses, while dermal exposure was considered negligible.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(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
Public, Environmental & Occupational Health
Katharina Schwarz, Katharina Bluemlein, Thomas Goeen, Stefan Hahn, Ralph Hebisch, Wolfgang Koch, Ulrich Poppek, Anja Schaeferhenrich, Urs Schlueter, Monika Krug
Summary: The application of biocidal products by foam as an alternative to droplet spraying has inhalation exposure to aerosols as a concern. The study quantified the formation of inhalable aerosols during foaming and measured the aerosol release fractions of the active substance. The results showed that the aerosol release fractions varied and could be correlated to the process and foam parameters.
ANNALS OF WORK EXPOSURES AND HEALTH
(2023)
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)
