Article
Chemistry, Analytical
Tsugufumi Matsuyama, Yudai Tanaka, Masanori Nakae, Takumi Furusato, Kouichi Tsuji
Summary: This study proposes a new film-like-residue preparation process based on the freeze-drying method to improve the accuracy of Total reflection X-ray fluorescence (TXRF) analysis. The quantitative values and minimum detection limits of the residue prepared using freeze-drying method show improvement due to the weakened absorption effect. This method is significant for accurate TXRF analysis of high-elemental concentration solutions and can be applied to trace element analysis in different types of solutions such as environmental water and wastewater.
Article
Environmental Sciences
Maozhong Zheng, Gang Li, Yongle Hu, Jerome Nriagu, Eric Fru Zama
Summary: The study found that arsenic pollution does not alter the distribution of elements like iron, manganese, copper, and zinc in rice grains, with arsenic mainly affecting sulfur, copper, and zinc in rice caryopsis.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Yadan Ren, Jun Oyama, Tomoki Uchiyama, Yuki Orikasa, Toshiki Watanabe, Kentaro Yamamoto, Tsuyoshi Takami, Yoshinori Nishiki, Shigenori Mitsushima, Yoshiharu Uchimoto
Summary: This study successfully observed the surface reconstruction of oxygen evolution reaction (OER) catalysts through the combination of ex situ and in situ techniques, confirming that surface reconstruction enhances the OER activity. This finding is of great significance for understanding the behavior of OER catalysts and can provide guidance for designing active catalysts.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Biochemistry & Molecular Biology
Valentina Bonanni, Alessandra Gianoncelli
Summary: Scanning transmission X-ray microscopy (STXM) allows imaging of biological specimens and collection of localized spectroscopic information through X-ray fluorescence (XRF) and/or X-ray Absorption Near Edge Spectroscopy (XANES). Recent publications in synchrotrons have utilized soft X-ray spectro-microscopy in life science and environmental research to explore complex metabolic mechanisms by tracing chemical elements involved in metabolic pathways.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Bura Sindhupakorn, Pinit Kidkhunthod
Summary: This study examined structural changes in subchondral bone samples from osteoarthritic knee patients compared to controlled patients, using Synchrotron-based X-ray fluorescence and X-ray absorption spectroscopy techniques. The results revealed lower phosphorus content in older OA patients, leading to lower Ca-P proportions associated with osteoporosis. The majority of bone samples exhibited an amorphous structure of calcium-phosphate.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Chemistry, Analytical
Yves Kayser, Janos Osan, Philipp Hoenicke, Burkhard Beckhoff
Summary: Understanding the distribution and composition of PM in air is crucial for identifying sources and studying environmental impacts. TXRF has sensitivity in element-sensitive investigation, but linear calibration limits must be considered for accurate quantification.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Caroline Bissardon, Olivier Proux, Salvatore Andrea Gazze, Odile Filhol, Benoit Toubhans, Lucie Sauzeat, Sylvain Bouchet, Aled R. Lewis, Thierry Maffeis, Jean-Louis Hazemann, Sam Bayat, Peter Cloetens, R. Steven Conlan, Laurent Charlet, Sylvain Bohic
Summary: This study investigated the effects of sub-toxic concentrations of functionalized selenium nanoparticles on prostate cancer cells and their intracellular localization and fate. The results showed that monodisperse selenium nanoparticles capped with bovine serum albumin could slow down the migration capacity of aggressive prostate cancer cells compared to polydisperse selenium nanoparticles capped with chitosan. The nanoparticles were found to interact with mitochondria in the cells. These findings provide new insight for further research on the cytotoxic mechanisms of selenium nanoparticles.
Article
Medicine, Legal
Hibiki Komatsu, Hikari Takahara, Wataru Matsuda, Yoshinori Nishiwaki
Summary: The study analyzed commercially available red silk samples using TXRF and SR-XRF, with SR-XRF showing stronger discriminating capabilities. Based on the elemental analysis results, a combination of these two methods is proposed as a new nondestructive single fiber identification method for forensic science.
JOURNAL OF FORENSIC SCIENCES
(2021)
Article
Spectroscopy
Md. Akhlak Alam, M. K. Tiwari, Devarani Devi, Shilpa Tripathi, Ayushi Trivedi, Sunil Ojha, Rashmi Singh, Mukul Gupta
Summary: Nickel implanted silicon substrate has the potential for various applications such as infrared detectors, solar cells, spintronic devices, and the synthesis of nickel silicide layer in Si substrates. This study investigates the distribution profile of Ni ions and structural changes before and after annealing process in crystalline silicon substrates implanted with Ni ions. The results show significant changes in the in-depth concentration profile of Ni ions due to the inward and outward diffusion of Ni atoms during the annealing process, and the formation of NiSi2 phase around Ni atoms in the implanted region.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Environmental Sciences
Loredana Brinza, Imad Ahmed, Carmen-Madalina Cismasiu, Ioan Ardelean, Iuliana Gabriela Breaban, Florica Doroftei, Konstantin Ignatyev, Cristina Moisescu, Mariana Neamtu
Summary: Auriferous sulphide ores containing micro-fine gold and silver particles pose extraction challenges, with bioleaching as an environmentally friendly alternative. Experimental findings suggest that iron-oxidizing bacteria can facilitate the release of gold and silver. Utilizing synchrotron-based micro-analysis offers insights into the sequestration and speciation of noble metals.
Article
Chemistry, Physical
G. Hermogenes, E. B. Oliveira Jr, J. K. Zambianchi, P. Zambianchi
Summary: The TXRF technique can measure trace concentrations of radium in water with a detection limit of 0.047 Bq/L. With a molybdenum X-ray tube in TXRF geometry, a detection limit of 2.56 x 10-11 g can be achieved, but samples need to be evaporated to a dry residue beforehand. The WHO guideline recommends an upper limit of 1.0 Bq/L for radium in drinking water.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Spectroscopy
P. S. Remya Devi, Trupti A. Chavan, M. Ghosh, K. K. Swain
Summary: The study highlighted the importance of appropriate concentration of standard solutions for calibration and sensitivity measurements of the spectrometer, in addition to the quality of reference standard solution, for ensuring accuracy of the results.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Environmental Sciences
S. L. Matzen, G. P. Lobo, S. C. Fakra, A. Kakouridis, P. S. Nico, C. E. Pallud
Summary: Plant-soil interactions play a crucial role in the availability of arsenic and nutrients in arsenic-contaminated soils, affecting the uptake, tolerance, and leaching of arsenic in plants. The availability of arsenic was higher and nutrient content was lower in coarse-textured soil, resulting in greater arsenic uptake, lower biomass, and higher leaching of arsenic from the soil. Pteris vittata hyperaccumulated arsenic from coarse-textured soil, but not from medium-textured soil. Arsenic uptake by the fern was always greater than the loss through leaching.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Spectroscopy
Huynh Truc Phuong, Nguyen An Son, Nguyen Thi Nguyet Ha, Nguyen Thi Minh Sang, Nguyen Thi Truc Linh, Dinh Thanh Binh, Truong Thi Hong Loan, Ho Manh Dung, Tran Tuan Anh, Nguyen Van Dong
Summary: TXRF technique was used to analyze elements in nails of 62 subjects, revealing significant differences in concentrations of elements Ca, Cr, Fe, Cu, Zn, As, and Se between men with colon cancer and normal subjects. These elements could be potential factors for diagnosing colon cancer risk in men.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Aekkacha Tananonchai, Mau-Tsu Tang, Chih-Wen Pao, Pantawat Sampanpanish, Waraporn Tanthanuch, Somchai Tancharakorn
Summary: In this study, a fast-growing and highly tolerant plant, Pennisetum purpureum, was used as a Cd hyperaccumulator associated with EDTA. The presence of EDTA significantly increased the Cd accumulation in the shoots and roots of P. purpureum. The imaging and spectroscopy results revealed that Cd was accumulated in different tissues of the plant, and the addition of EDTA led to the formation of Cd-S bonding in addition to Cd-N/O bonding.
RADIATION PHYSICS AND CHEMISTRY
(2023)