Review
Instruments & Instrumentation
Vanessa J. Ferreira, Fernanda B. S. Virgens, Lais N. Pires, Fabio de S. Dias, Valfredo A. Lemos, Leonardo S. G. Teixeira
Summary: X-ray fluorescence spectrometry (XRF) is widely used for multi-element determination in various samples. However, for trace level determination, separation and preconcentration procedures are often used to enhance sensitivity. Liquid-phase extraction (LPE) is a simple, fast, and easily automated pretreatment technique, and its combination with XRF has been extensively studied.
APPLIED SPECTROSCOPY REVIEWS
(2023)
Review
Instruments & Instrumentation
Leonardo B. Guimaraes, Leonardo S. G. Teixeira, Fabio A. C. Amorim, Fabio de S. Dias
Summary: This review presents the general aspects of combining solid phase extraction (SPE) with energy dispersive X-ray fluorescence spectrometry (EDXRF) for multielement determination. It also introduces the derivations of SPE, such as dispersive solid phase extraction (DSPE), dispersive micro-solid phase extraction (D mu SPE), and dispersive magnetic micro-solid phase extraction (DM-mu SPE), which allow direct analysis of the solid phase. The sorbents, advantages, disadvantages, and analytical characteristics of this combination method are discussed, along with the future perspectives of this analytical arrangement.
APPLIED SPECTROSCOPY REVIEWS
(2023)
Article
Energy & Fuels
Adam Smolinski, Marek Stempin, Natalia Howaniec
Summary: In this paper, the content of chemical elements in waste was determined using ICP-OES and WDXRF techniques. To overcome the limitations of expensive and time-consuming analyses, a quick and inexpensive method for preliminary identification of the chemical composition of tested samples was developed. The samples were prepared as durable tablets for X-ray measurements. The limits of quantification were determined, and the uncertainty of the results was estimated by comparing them with a calibration method using standards and certified reference materials.
Article
Food Science & Technology
Sharmin Sultana, Husne Ara Khatun, Muhiuddin Faruquee, Md Mizan Ul Islam, Hosna Jannat Tonny, Rafiqul Islam
Summary: The reliability of handheld X-ray fluorescence (XRF) spectrometer was compared with that of inductively coupled plasma optical emission spectrometry (ICP-OES) for determining zinc (Zn) concentration in rice. The results showed a high positive relationship between the two methods, demonstrating that XRF has the potential to be a reliable and low-cost alternative for determining Zn content in rice.
Article
Spectroscopy
Stefano Martinuzzi, Claudia Giovani, Walter Giurlani, Emanuele Galvanetto, Nicola Calisi, Michael Casale, Claudio Fontanesi, Samuele Ciattini, Massimo Innocenti
Summary: The proposed method for measuring metallic coating thickness relies on self-produced standards made through an electroplating process and ensures sufficiently homogeneous thickness distribution consistent with certified standard specifications.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Lanlan Li, Qirui Huang, Jing Xiao, Jiamin Feng, Shu Zhang, Hong Luo, Zhirong Zou, Xiaoli Xiong
Summary: In this study, Fe3O4 served as both an adsorbent and photocatalyst in the photochemical vapor generation-atomic fluorescence spectrometry (PVG-AFS) determination of Bi(III) after preconcentration. The effects of formic and acetic acid concentration, UV irradiation time, Fe3O4 concentration, and interferences from co-existing ions were investigated. Results showed that the AFS intensity was slightly enhanced by the mixed acid solution, but a significant enhancement was observed when Fe3O4 was used as a photocatalyst. Fe3O4 can decompose in the mixed acid solution, generating Fe3+ which acts as a sensitizer for improving Bi(III) efficiency. Under optimized conditions, the LOD of the proposed PVG-AFS system with or without preconcentration (5 mL sample) were 0.44 ng/mL and 0.07 ng/mL, respectively. The PVG-AFS system was successfully applied to the determination of water samples and demonstrated good accuracy and applicability with recoveries ranging from 94% to 104%.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Qianqian Xu, Wenjing Xia, Lazhen Zhou, Zhengwei Zou, Qiuxia Li, Lijun Deng, Sha Wu, Tao Wang, Jingduo Cui, Zhiguo Liu, Tianxi Sun, Junsong Ye, Fangzuo Li
Summary: Liver fibrosis is an important stage in the development of chronic liver disease. In this study, confocal mu-XRF was used to analyze the deposition of iron in liver fibrosis induced by TAA. The results suggest that iron deposition may play a significant role in the progression of hepatic fibrosis induced by TAA.
Article
Chemistry, Applied
Vanessa J. Ferreira, Valfredo A. Lemos, Leonardo S. G. Teixeira
Summary: Dynamic reversed-phase liquid-liquid microextraction (RP-LLME) was employed to prepare vegetable oil samples for the determination of cadmium, chromium, manganese, and nickel. The method involved optimizing parameters and using EDXRF for metal determination, resulting in low limits of quantification and high preconcentration factors.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Thuong Thi Kim Nguyen, Huyen Thu Luu, Loi Duc Vu, Thao Thi Ta, Giang Thi Huong Le
Summary: The anodic stripping voltammetry (ASV) method with a gold electrode was successfully applied for determining total mercury in solid samples. Under optimal conditions, the method showed good accuracy and reproducibility for determining total mercury content.
JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Analytical
Suvi Kulomaki, Elmeri Lahtinen, Siiri Peramaki, Ari Vaisanen
Summary: A simple and sensitive method utilizing 3D printed metal scavenger for preconcentration and speciation of mercury species in water samples has been developed. By studying experimental parameters, MeHg and iHg concentrations in water samples were successfully determined with high analytical accuracy.
Article
Chemistry, Analytical
C. Hommel, J. Hassler, R. Matschat, T. Vogt, A. K. Detcheva, S. Recknagel
Summary: The method utilizing ETV-ICP OES has been optimized for direct solid sampling analysis of soda-lime glass, providing fast and reliable quantification of both major and trace elements. The analytical performance of this method was superior to conventional liquid ICP OES, with high trueness and precision demonstrated in certification interlaboratory comparisons.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
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
Chemistry, Analytical
Yongchun Liu, Jie Zou, Bin Luo, Hairong Yu, Zhigang Zhao, Hui Xia
Summary: Using natural plant extracts as auxiliary matrix or photocatalysts can enhance the efficiency and sensitivity of photochemical vapor generation atomic fluorescence spectrometry for trace mercury determination, while reducing biological toxicity and secondary pollution. This green and sensitive method provides an experimental basis for expanding the photochemical vapor generation system.
MICROCHEMICAL JOURNAL
(2021)
Article
Instruments & Instrumentation
Andre Waehlisch, Malte Wansleben, Jan Weser, Christian Stadelhoff, Ina Holfelder, Yves Kayser, Burkhard Beckhoff
Summary: Performing x-ray scattering analysis can quantitatively describe a sample and complement x-ray fluorescence analysis. In this work, a metrological study is presented to determine differential scattering coefficients for nickel, using a flexible experimental set-up to enable angular scans of scattering intensities at different positions.
Article
Environmental Sciences
Fuat Aslan, Ali Tor
Summary: This study developed a simple method to selectively determine trace As(V) species in water samples, even in the presence of As(III). The method involved a batch adsorption process using a miniaturized MIL-101(Fe) mixed-matrix membrane (MOF-MMM), followed by direct determination through energy dispersive X-ray fluorescence (EDXRF) spectrometry. The method was found to be easy-to-use, operationally convenient, and cost-effective.
