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
Spectroscopy
Khadouja Harouaka, Caleb Allen, Eric Bylaska, Richard M. Cox, Gregory C. Eiden, Maria Laura di Vacri, Eric W. Hoppe, Isaac J. Arnquist
Summary: Nitrous oxide (N2O) was used as a reaction gas for gas-phase ion-molecule interactions, showing superior oxide formation compared to O2. The study also revealed the potential of N2O to produce significant nitride species and the consistency of experimental results with predicted reaction enthalpies. New platforms demonstrated utility for studying a wide range of elements efficiently.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Multidisciplinary Sciences
Takashi Sano, Kenichiro Tani, Shigekazu Yoneda, Hla Min, Thaung Htike, Zin Maung Maung Thein, Osamu Ishizuka, Nao Kusuhashi, Reiko T. Kono, Masanaru Takai, Chris E. Conway
Summary: A study on the largest volcano in central Myanmar, Mt. Popa, reveals that adakitic magmas with high-pressure crystallization are produced through slab melting and fractional crystallization processes. This research provides important insights into the petrogenesis of magma in an old subduction zone.
SCIENTIFIC REPORTS
(2022)
Article
Geochemistry & Geophysics
Katrin Weber, Michael Weber, Martina Menneken, Anna G. Kral, Regina Mertz-Kraus, Thorsten Geisler, Jochen Vogl, Thomas Tuetken
Summary: Experimental alteration of dental tissues from modern African elephants reveals that temperature and acidity can affect isotope ratios and element distribution in teeth, with enamel being more resistant to changes compared to dentin.
Article
Biochemical Research Methods
Lucas Schmidt, Kayla Peterson, Thieli Schaefer Nunes, Malgorzata Knap, Lauren Petrick, Julio Alberto Landero-Figueroa
Summary: VAMS is a simple and safe method for collecting and storing blood samples. This study presents a new method for determining trace elements in VAMS-collected blood samples using microwave-assisted digestion and ICP-QQQ. The method showed high precision, accuracy, and efficiency, contributing to the advancement of trace element analysis in biomedical research and clinical applications.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Applied
Chiara Telloli, Silvia Tagliavini, Fabrizio Passarini, Stefano Salvi, Antonietta Rizzo
Summary: This study evaluated the mineral composition of olive oil samples from different geographical origin using chemometric techniques and validated the reliability of the method using high-level laboratory facilities for trace element/isotopic analysis. The results showed variations between samples and Principal Component Analysis revealed the geographical characteristics.
Article
Chemistry, Multidisciplinary
Yang-Dan Liu, Hua-Jun Liu, Guan-Wen Gong
Summary: A straightforward charge derivatization strategy was developed for sensitive quantification of DAGs in biological samples. The developed methods for detection and quantification of DAGs showed promising results, and metabolic characterizations of tagged DAGs were explored in disease models.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
S. Ramirez-Acosta, R. Uhlirova, F. Navarro, J. L. Gomez-Ariza, T. Garcia-Barrera
Summary: Selenomethionine can protect HepG2 cells against cadmium toxicity by modulating selenoprotein synthesis and reducing cadmium accumulation.
FRONTIERS IN CHEMISTRY
(2022)
Article
Biochemical Research Methods
Johanna Irrgeher, Thomas Berger, Anastassiya Tchaikovsky, Cornelius Tschegg, Ghazaleh Gouya, Peter Lechner, Anika Retzmann, Christine Opper, Christa Firbas, Michael Freissmuth, Kerstin Peschel-Credner, Karolina Anderle, Claudia Meisslitzer, Michael Wolzt, Thomas Prohaska
Summary: This article presents an analysis method for Pb isotope pattern deconvolution using enriched Pb-204 as a tracer to monitor trace levels of Pb within the human body. The method overcomes the limitations of using natural lead as a tracer and allows for the calculation of isotope pattern from measured isotope ratios without knowing the quantities of different isotope sources.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Lydia A. Rush, John B. Cliff, Dallas D. Reilly, Andrew M. Duffin, Carmen S. Menoni
Summary: The study used extreme ultraviolet laser ablation and ionization time-of-flight mass spectrometry to map uranium isotopic heterogeneity at the nanoscale, revealing variations in U-235/U-238 ratio at different spatial scales. The results suggest that U heterogeneity in the fuel pellet is due to incomplete blending of the source materials, and the ability of EUV TOF to assess isotopic heterogeneity at the nanoscale makes it a promising tool in various fields.
ANALYTICAL CHEMISTRY
(2021)
Article
Biochemical Research Methods
Kelly L. LeBlanc, Tantima Kumlung, Andres Suarez Priede, Paramee Kumkrong, Thippaya Junvee, Suladda Deawtong, Jorg Bettmer, Maria Montes-Bayon, Zoltan Mester
Summary: Mushrooms are considered a valuable food source due to their high protein and fiber and low fat content. This study showed that selenium-enriched Lingzhi mushrooms contained low levels of selenium, with selenomethionine being the most abundant form. The mycelium of these mushrooms showed significant selenium accumulation and the presence of selenium nanoparticles, which could have potential medicinal value.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Yue Cen, Jiasheng Wang, Thomas J. Algeo, Zhou Wang, Xiaochen Ma, Can Chen
Summary: Upward diffusing methane in gas hydrate geological systems is consumed in the sediment and water column by biogeochemical reactions, leading to diagenetic alteration of buried foraminiferal tests. This study focuses on the microstructure and elemental composition of buried foraminiferal tests to understand the impact of methane release events. The results suggest that foraminiferal tests are highly susceptible to alteration by methane-bearing fluids, and the elemental ratios of diagenetically altered tests can serve as reliable proxies for paleo-methane release events. The study also reveals frequent vertical fluctuations of the sulfate-methane transition zone in the studied area, indicating variable fluid flux and methane release rates.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Food Science & Technology
Giovanna Cafeo, Antonella Satira, Marina Russo, Monica Mondello, Paola Dugo
Summary: This research aimed to determine oxygen heterocyclic compounds in twenty-six Citrus- and cinnamon-flavoured foods using supercritical fluid chromatography in combination with triple-quadrupole mass spectrometry. The presence of these compounds in all samples analyzed confirmed the use of Citrus fruits in the preparation of the Citrus-flavoured foods. Mandarin juice was found to be the richest source of bioactive compounds, specifically polymethoxyflavones.
Review
Biochemistry & Molecular Biology
Chaoting Wen, Xudong He, Jixian Zhang, Guoyan Liu, Xin Xu
Summary: Se-enriched proteins have good bioavailability and bioactivities, and can be extracted using solvent extraction and novel extraction technologies. These proteins exhibit various bioactivities including antioxidant, immune regulation, neuroprotective, and hyperglycemic inhibition activities. Future research should focus on the relationship between Se-enriched protein metabolism and the selenium regulatory protein metabolic pathway, as well as the structure-activity relationship of Se-enriched proteins/hydrolysates from different sources.
Article
Chemistry, Analytical
Yue Luo, Gang Chen, Xiuqing Deng, Hanqing Cai, Xueheng Fu, Fujian Xu, Xiaonian Xiao, Yumeng Huo, Jin Luo
Summary: A method using high performance liquid chromatography-inductively coupled plasma-tandem mass spectrometry (HPLC-ICP-MS/MS) was developed for the speciation of six selenium species. The six species could be completely separated within 20 minutes under optimized conditions, and the method showed low detection limits and good recovery for selenium-enriched foods.
Article
Chemistry, Analytical
Michelle Buoso, Beatrice Campanella, Massimo Onor, Emanuela Pitzalis, Alessandro D'Ulivo
Summary: The use of BH intermediates as derivatization reagents significantly improves the tolerance to interference from transition metal ions in the generation of SbH3 and BiH3, and shows high tolerance in a wide range of acidity. The method has been successfully applied to the determination of Sb and Bi in complex samples, providing further understanding of the chemical behavior of borohydrides.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Chao-Feng Li, Xuan-Ce Wang, Zhu-Yin Chu, Peng Peng
Summary: Thermal ionization mass spectrometry (TIMS) is the standard method for obtaining precise Sr-87/Sr-86 isotopic ratios. However, our developed hydrofluoric acid coprecipitation method offers a low-cost, rapid, simple, and high-throughput alternative for analyzing red wine samples, effectively eliminating isobaric interference and matrix element inhibition.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Ivan B. Krstic, Bratislav M. Obradovic, Milorad M. Kuraica
Summary: This paper presents the spatio-temporal dynamics of a Grimm-type microsecond pulsed glow discharge (mu PGD) in argon at 6 mbar. The occurrence of a high current peak during the discharge ignition is analyzed and the importance of displacement current is emphasized. The development of electron excitation temperature for argon atoms and ions at various distances from the cathode is measured. The spatio-temporal evolution of selected spectral lines of argon and copper atoms and ions is analyzed during different phases of the discharge. The results suggest that the behavior of spectral line emissions differs between the pre-peak and afterglow periods, with different lines reaching maximum intensity during these phases. The appearance time and decay time of the afterpeak are shorter for ions than for atoms. These findings are explained in terms of three-body recombination processes and ion mobilities.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Qiuyun Wang, Anmin Chen, Xun Gao
Summary: In this paper, the combination of Tesla coil discharge (TCD) and laser-induced breakdown spectroscopy (LIBS) was used to enhance the emission of Al atomic lines and AlO molecular bands. The optimized distance between the TCD tip and the sample surface was found to be 5 mm, and the optimal laser energy was 25.1 mJ. Furthermore, TCD-SELIBS showed lower limits of detection (LoDs) for Cr and Pb elements compared to surface enhanced LIBS (SELIBS). The combination of TCD and LIBS is a promising technology for high-sensitivity analysis of heavy metals in water, with the advantages of simplicity, low cost, ease of operation, industrialization, and commercialization.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)
Article
Chemistry, Analytical
Yanwen Tang, Tingguang Lan, Jianfeng Gao, Zhongjie Bai, Xiaowen Huang, Junjie Han, Na Liu
Summary: Titanium is an important metal widely used in various industries. Ilmenite minerals are the main source of titanium metal and can be found in igneous and metamorphic rocks as well as different types of deposits. To accurately determine U-Pb ages of ilmenite, a new calibration method and appropriate reference materials are urgently needed. Laser ablation sector field inductively coupled plasma mass spectrometry has been used to minimize matrix effects and zircon 91500 has been identified as a suitable reference material for measuring the Pb/U ratio in ilmenite. The direct calibration method using zircon 91500 as an external standard has been found to be effective for in situ U-Pb dating of ilmenite samples under different ablation settings.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2024)