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
Biochemical Research Methods
Maria S. Jimenez, Mariam Bakir, Daniel Isabal, Maria T. Gomez, Josefina Perez-Arantegui, Juan R. Castillo, Francisco Laborda
Summary: In this study, hydrodynamic chromatography coupled to inductively coupled plasma mass spectrometry was used to simultaneously determine dissolved and nanoparticulate species of gold and silver, with optimized mobile phase for resolution and recovery. The developed methods allowed for quick and accurate detection of nanoparticulate and dissolved species of gold and silver in dietary supplements, showing good agreement with other analysis methods. Due to achievable resolution, the quality of quantitative results is influenced by the relative abundance and size of nanoparticles present.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Shuang-Qing Zhang, Sui-Han Cheng, Shi Shen, Bi-Ying Luo, Yan Zhang
Summary: A new method was developed for quantifying Cr(III) and Cr(VI) in Chromium-enriched yeast, using ion chromatography-inductively coupled plasma mass spectrometry. Cr(III) and Cr(VI) were extracted using ultrasound-assisted weakly alkaline EDTA solution combined with boiling, and separated on two successive anion-exchange columns. The method was sensitive, accurate, and precise, with no Cr(VI) species found in CrY.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2021)
Article
Chemistry, Analytical
Kamal K. Jinadasa, Paloma Herbello-Hermelo, Elena Pena-Vazquez, Pilar Bermejo-Barrera, Antonio Moreda-Pineiro
Summary: A pre-concentration method for low mercury levels in seaweed was developed, utilizing an imprinted polymer for selective extraction and determination of mercury species. The method showed low detection limits, good repeatability, and was successfully applied to certified reference materials and edible seaweeds for analysis of methylmercury and Hg(II).
Article
Chemistry, Analytical
Qing Yang, Hanjiao Chen, Jing Hu, Ke Huang, Xiandeng Hou
Summary: Efficient simultaneous photochemical vapor generation (PVG) of ruthenium (Ru) and osmium (Os) in formic acid medium was demonstrated, with impressive limits of detection achieved for both elements. The synergistic enhancement from cobalt and cadmium ions on PVG efficiency was discovered, and the accuracy of the proposed PVG-ICP-MS method was validated through analysis of water samples. Additionally, volatile compounds of Ru were trapped and generation of Ru carbonyls was verified by high-resolution ESI-MS.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Zhiming Xiao, Jitong Wang, Jiangpeng Guo, Decheng Suo, Shi Wang, Jing Tian, Lili Guo, Xia Fan
Summary: The newly developed analytical method is rapid, sensitive, and species-preservative, allowing for the simultaneous determination of multiple selenium species. It has been successfully applied to various reference materials and feed samples for selenium speciation analysis.
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
(2021)
Article
Biochemical Research Methods
M. Ribeiro, E. Galli, T. Guerin, J. A. L. Silva, I. Castanheira, A. Leufroy, P. Jitaru
Summary: This study presents the development and validation of a new analytical method for simultaneous speciation analysis of selenium and mercury in fish muscle. The method involves the extraction and separation of the different species using microwave-assisted enzymatic hydrolysis and HPLC with a specific column and mobile phase. The method was validated and successfully applied to analyze muscle samples from various fish species.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yihuan Song, Qingfang Ma, Heyong Cheng, Jinhua Liu, Yuanchao Wang
Summary: A method utilizing online solid-phase extraction coupled with high performance liquid chromatography and inductively coupled plasma mass spectrometry was developed for simultaneous enrichment and analysis of ultra-trace lead and mercury species in water. This method allows for efficient and accurate determination of lead and mercury species in water samples, with high enrichment factors and low LODs and LOQs. The method was successfully applied to analyze trace lead and mercury species in various types of water samples, showing promising results for unstable sample analysis.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Liang Dong, Hanjiao Chen, Yongyan Ning, Yaowen He, Ying Yu, Ying Gao
Summary: Photochemical vapor generation (PVG) is an alternative sample introduction method in atomic spectrometry, and the addition of transition metals can enhance its efficiency. This study introduced vanadium species as novel sensitizers in PVG and applied it for the determination of tellurium.
ANALYTICAL CHEMISTRY
(2022)
Article
Biochemical Research Methods
Catharina Erbacher, Nils Flothkoetter, Marcel Macke, C. Derrick Quarles, Michael Sperling, Jens Mueller, Uwe Karst
Summary: A fast and automated method for separation and quantification of bromide and 5-BrdU via IC and ICP-MS was developed, relevant for monitoring electron transfer efficiency along DNA. With a LOD of 30 ng/L, the method is suitable for screening applications with a multitude of samples.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Review
Chemistry, Multidisciplinary
Kate Moghadam, Diane Beauchemin
Summary: To analyze trace evidence at crime scenes, non-destructive or low-sample analysis techniques are preferred. One such technique is solid sampling ETV-ICPOES, which requires only a small amount of sample. This article discusses the capabilities of ETV-ICPOES in forensic analysis and presents various methods for analyzing physical evidence. Internal standardization and multivariate analysis are used to compensate for sample loading effects and enable quantification and discrimination of evidence. The article also explores future perspectives for utilizing ETV-ICPOES in forensic settings.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Satoki Okabayashi, Leona Kawane, Nanda Yusentri Mrabawani, Takahiro Iwai, Tomohiro Narukawa, Motohiro Tsuboi, Koichi Chiba
Summary: A novel technique using HILIC combined with ICP-MS was developed to identify and quantify Gd-based contrast agents in river water. The study found both known Gd-based contrast agents and unidentified Gd compounds in river water samples, suggesting potential transformation or dissociation of Gd chelates during treatment in WWTP.
Article
Materials Science, Multidisciplinary
Corliss Kin Sio, Teresa Baumer, James Cahill, Sarah Hansen, Sharee Harris, Josh Wimpenny, Rachel Lindvall, Wyatt Du Frane, Josh Kuntz
Summary: The phase stability of cBN is influenced by the presence of impurities, but quantitative analysis methods are currently lacking. This study presents a flux fusion method for fully digesting cBN samples and analyzing impurities using ICPMS. High levels of Si impurities were found in all cBN powders studied.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Analytical
Zhenbin Zhang, Norman J. Dovichi
Summary: This study presents an integrated platform that combines a miniaturized filter-aided sample preparation method with high-pH reversed phase or strong cation exchange microreactors for efficient sample preparation and fractionation prior to LC-ESI-MS/MS analysis. The platform generated a large number of unique peptides and protein groups, comparable to state-of-the-art methods, but with reduced cost and time. This integrated platform has significant potential in deep proteomics analysis of mass-limited samples.
ANALYTICAL CHEMISTRY
(2022)
Article
Spectroscopy
Dan Zhou, Yao Lin, Haoqi Long, Yuwei Xu, Bo Wang, Liang Xian, Chuanqin Xia, Xiandeng Hou, Chengbin Zheng
Summary: A simple and effective system was developed for speciation analysis of 99Tc, which showed advantages in reducing sample consumption, improving sensitivity, and saving radioactive waste.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Yujia Ying, Huilin Li
Summary: Enzymes play a crucial role as biological catalysts in accelerating biochemical reactions in living organisms. This study proposes a convenient method for monitoring enzymatic catalytic processes using native top-down mass spectrometry. By exploring the heterogeneity of the chymotrypsin sample and using tandem mass spectrometry, the researchers were able to monitor covalent and noncovalent enzymatic complexes, substrates, and products during catalysis. The results demonstrate that this method has the potential to be a promising tool for characterizing biocatalysts.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Kang Yang, Shuaibo Shi, Jinyu Wu, Shaolong Han, Shengdi Tai, Shishen Zhang, Kun Zhang
Summary: H2O and D2O are important analogues closely related to various industries and monitoring fields. This study successfully distinguishes and detects H2O and D2O by designing a novel eu(III)-macrocycle with dual emitters, Eu-2a, and conducting fluorescence titration experiments.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Julia Kuligowski, Alvaro Perez-Rubio, Marta Moreno-Torres, Polina Soluyanova, Judith Perez-Rojas, Ivan Rienda, David Perez-Guaita, Eugenia Pareja, Ramon Trullenque-Juan, Jose Castell, Marcha Verheijen, Florian Caiment, Ramiro Jover, Guillermo Quintas
Summary: This study introduces a novel variable selection approach called cluster PLS (c-PLS) to assess the joint impact of variable groups selected based on biological characteristics on the predictive performance of a multivariate model. The usefulness of c-PLS is shown using miRNomic and metabolomic datasets obtained from the analysis of liver tissue biopsies.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Meixue Lai, Lijie Zhong, Siyi Liu, Yitian Tang, Tingting Han, Huali Deng, Yu Bao, Yingming Ma, Wei Wang, Li Niu, Shiyu Gan
Summary: This study presents a method for constructing wearable sweat electrolyte sensors using carbon fiber-based solid-contact ion-selective electrodes (SC-ISEs). By using carbon fibers extracted from commercial cloth as electrode material, the cost and reproducibility issues of flexible SC-ISEs were addressed. The results showed that the carbon fiber-based SC-ISEs exhibited reversible voltammetric and stable impedance performances, and had high reproducibility of standard potentials between normal and bending states.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Yang, Ying Liu, Min Deng, Peipei Wang, Dan Cheng, Songjiao Li, Longwei He
Summary: A near-infrared fluorescent probe has been developed to accurately measure the levels of peroxynitrite (ONOO-) in the endoplasmic reticulum (ER) in acute lung injury (ALI). The probe demonstrated rapid response, high selectivity, good sensitivity, and enhanced fluorescence intensity in response to ONOO-. It was successfully used to detect changes in ONOO- levels and showed significant increases in an ALI cell model and an ALI mouse model.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yanping Wang, Yuemei Chen, Kejun Li, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang
Summary: In this work, a portable analytical system based on point discharge chemical vapor generation atomic emission spectrometry (PD-CVG-AES) coupling with gold filament enrichment was designed. The highly sensitive analysis of Hg2+ indirectly realized the detection of ascorbic acid (AA). The measurement is based on the fact that Ag+ can decrease the concentration of Hg2+ by forming Ag-Hg amalgam in the presence of the reductant SnCl2, while AA can pre-reduce Ag+ to Ag0, leading to the generation of silver nanoparticles (Ag NPs). The developed novel analytical strategy broadens the application of microplasma-based AES and offers a higher level of sensitivity compared to current AA detection techniques.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yundi Huang, Bo Song, Kaiwen Chen, Deshu Kong, Jingli Yuan
Summary: This study developed two lysosome-targetable background-free TGL probes for efficient and accurate detection of 1O2, which can be used for monitoring endogenous 1O2 concentrations in lysosomes and discriminating variability induced by different photosensitizers. Furthermore, a smart luminescent sensor film was successfully prepared for on-site 1O2 production detection during PDT processes, offering a promising clinical monitoring tool for skin diseases.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Wei Lang, Jia-Mei Qin, Qian-Yong Cao
Summary: A novel polymer-based probe P1 was successfully synthesized for fluorescently ratiometric sensing of H2S with high selectivity and sensitivity. A smartphone sensing platform was constructed to conduct visual quantitative detection of H2S. P1 can be employed in evaluating the level fluctuations of H2S in living cells, testing water samples/wine samples, and monitoring food freshness.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yuanyuan Qin, Shuda Liu, Shuyun Meng, Dong Liu, Tianyan You
Summary: The study developed a split aptamer-based sandwich-type ratiometric biosensor for the detection of 17 beta-estradiol (E2) using photoelectrochemical and electrochemical assays. The biosensor utilized split aptamer fragments to recognize E2 and trigger a hybridization chain reaction, resulting in the production of double-stranded DNA labeled with CdTe quantum dots. This DNA complex was able to sensitize CdTe quantum dots and generate response signals for E2 detection. The developed biosensor demonstrated high sensitivity and accuracy with two linear ranges and low detection limits.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Siriwan Teepoo, Jongjit Jantra, Khaunnapa Panapong, David Taiwo Ajayi
Summary: A novel immunochromatographic assay based on hyperbranched Au plasmonic blackbodies with a smartphone readout was developed for rapid and sensitive detection of leucomalachite green residues in fish and shrimp products.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Andrea L. Larraga-Urdaz, Borja Moreira-Alvarez, Jorge Ruiz Encinar, Jose M. Costa-Fernandez, Maria Luisa Fernandez-Sanchez
Summary: A major challenge in the 21st century is the development of point-of-care diagnostic tools. In this study, a highly sensitive and simple bioassay using AuNPs and MNAzymes was developed for rapid detection and quantification of miRNA-4739. The proposed strategy shows potential for breast cancer diagnosis.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Xiaohan Zhao, Anyu Wang, Lingzi Zhai, Jiuhe Gao, Sizhe Lyu, Yingshan Jiang, Tian Zhong, Ying Xiao, Xi Yu
Summary: A novel method using polystyrene-coated magnetic nanoparticles for extracting monohydroxy polycyclic aromatic hydrocarbons from urine samples was investigated. The proposed method is simple, sensitive, and efficient, with desirable sensitivity for analyzing low-abundance metabolites in large volumes of complex urine samples.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Quan, Yuqing Zeng, Wenke Zhang, Fengfeng Li, Mengjiao Li, Zhihe Qing, Linlin Wu
Summary: In this study, a visual and reusable biosensor was developed for detecting substrates that are closely associated with human physiological health. The immobilized oxidase showed higher stability and sensitivity under harsh conditions, enabling reliable detection of substrates in complex fluids.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Dongjuan Wang, Xiuqian Ding, Jinling Xie, Juan Wang, Guanhao Li, Xin Zhou
Summary: In this study, a three-in-one sensor was developed for real-time detection of biogenic amines (BAs) with high sensitivity and selectivity. The sensor showed multimodal responses and could be used to fabricate portable devices for on-site non-destructive assessment of food spoilage indicators.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Jinting Meng, Zihao Xu, Shasha Zheng, Hongqun Yang, Tianfu Wang, Hong Wang, Yingwei Zhang
Summary: This study demonstrates the development of a cascade signal amplification system using a multi-pedal DNA walker and strand displacement reactions for the electrochemical detection of miRNA-155. The biosensor exhibited high sensitivity, selectivity, and the potential for clinical applications.
ANALYTICA CHIMICA ACTA
(2024)