Article
Chemistry, Applied
Larissa Pinto Silva, Naira Da Silva Campos, Thalles Pedrosa Lisboa, Lucas Vinicius de Faria, Maria Auxiliadora Costa Matos, Renato Camargo Matos, Rafael Arromba de Sousa
Summary: An effective and simple method using SWASV was proposed for simultaneous determination of cadmium, lead and copper in chocolate samples. The method involved ultrasonic bath extraction and achieved good linearity, precision and accuracy. The new method is especially attractive for case studies and routine analysis, offering advantages over traditional methods.
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
(2021)
Article
Chemistry, Analytical
Farida Ait Lhaj, Hecham Elhamri, Zakaria Ait Lhaj, Abdelkader Zarrouk, Abdellah El Abidi, Souad El Hajjaji, Abdelkebir Bellaouchou
Summary: The study examined the quality of breast milk in Kenitra city by assessing essential elements and heavy metals levels, revealing significant correlations and influence from sociodemographic parameters. Some samples exceeded recommended limits for cadmium and lead, indicating low contamination levels, with certain elements surpassing international standards without reported adverse effects on newborns.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Biotechnology & Applied Microbiology
Mohammadi Ahrouch, Jose Manuel Gatica, Khalid Draoui, Dolores Bellido-Milla, Hilario Vidal
Summary: In this study, natural illite-smectite and stevensite Moroccan clays were used to simultaneously remove lead and cadmium from water. The results showed that this approach has good adsorption performance and can effectively remove heavy metal ions, with favorable adsorption of cadmium ions in the bimetallic solution. Honeycomb monoliths, as a compact adsorbent, have the potential for application in water treatment.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Biochemistry & Molecular Biology
Mazyar Yazdani, Sonia Distante, Lars Morkrid, Rune J. Ulvik, Bjorn J. Bolann
Summary: Bloodlettings in the treatment of hemochromatosis may increase the blood concentration of lead.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2023)
Article
Environmental Sciences
Zhihui Yang, Gai Zeng, Lin Liu, Fangshu He, Chukwuma Arinzechi, Qi Liao, Weichun Yang, Mengying Si
Summary: Cationic lead/cadmium and anionic arsenic exhibit opposite geochemical behaviors in soils, making their synchronous remediation challenging. This study developed an iron-manganese modified biochar (BC-Fe-Mn) that can simultaneously immobilize lead, cadmium, and arsenic in soil. After 90 days of immobilization, the efficiency of immobilizing lead, cadmium, and arsenic reached 57%, 51%, and 35% respectively. The simultaneous immobilization mechanisms involve morphological transformation, precipitation/co-precipitation, and surface complexation.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Tulay Borahan, Nazime Ebrar Karlidag, Buse Tugba Zaman, Sezgin Bakirdere
Summary: A method based on dispersive solid-phase microextraction using magnetic effervescent tablets was developed for the preconcentration of cadmium in flame atomic absorption spectrometer systems. This method demonstrated high detection efficiency, reproducibility, and accuracy for the determination of cadmium content, showing potential for practical applications in environmental monitoring.
Article
Chemistry, Analytical
Linda Sagapova, Stanislav Musil, Barbora Kodrikova, Milan Svoboda, Jan Kratzer
Summary: By studying the effect of modifiers, it was found that the Cr3+/KCn and Ti4+/KCn environments exhibited higher CVG efficiency and sensitivity, while the Co2+/ascorbic acid/thiourea environment showed lower efficiency.
ANALYTICA CHIMICA ACTA
(2021)
Article
Polymer Science
Seyyed Alireza Hashemi, Sonia Bahrani, Seyyed Mojtaba Mousavi, Navid Omidifar, Mohammad Arjmand, Kamran Bagheri Lankarani, Seeram Ramakrishna
Summary: The newly developed sensor configuration can simultaneously and differentially detect lead and cadmium with low detection limits and good sensitivity. It shows a favorable recovery rate in human blood plasma and wastewater samples.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Azimatu Seidu, Marc Dvorak, Jari Jarvi, Patrick Rinke, Jingrui Li
Summary: This study presents a detailed first-principles analysis of the (001) surface of methylammonium lead triiodide (MAPbI(3)), revealing that the clean MAI-T model is more stable and conducive to surface reconstructions. The corresponding band structures show surface states originating from the conduction band, but the stable reconstructed surface models do not introduce new states within the bandgap.
Article
Environmental Sciences
Zhihui Yang, Hangyuan Gong, Fangshu He, Eveliina Repo, Weichun Yang, Qi Liao, Feiping Zhao
Summary: In this study, a novel iron-doped hydroxyapatite composite (Fe-HAP) was developed for the simultaneous remediation of lead-, cadmium-, and arsenic-co-contaminated soil. Fe-HAP exhibited immobilization efficiencies of 79.77%, 51.3%, and 37.5% for Pb, Cd, and As, respectively. The adsorption kinetics of Pb, Cd, and As on Fe-HAP followed a pseudo-second-order model, indicating chemisorption control. XRD, SEM, and XPS analysis confirmed the formation of stable minerals between Fe-HAP and Pb, Cd, and As. Overall, Fe-HAP showed promising potential for the remediation of co-contaminated soil.
ENVIRONMENTAL POLLUTION
(2022)
Article
Food Science & Technology
Leandro Rossi Castilho, Vanessa dos Santos Fernandes Correa, Mariana Azevedo Rosa, Ayla Campos do Lago, Giovana de Fatima Lima Martins, Eduardo Costa Figueiredo
Summary: Lead and cadmium in non-mineralized raw milk samples were determined using dispersive solid-phase extraction with magnetic restricted access carbon nanotubes (M-RACNTs) followed by flame atomic absorption spectrometry analysis. M-RACNTs with magnetite nanoparticles and a chemically crosslinked bovine serum albumin (BSA) external layer efficiently captured the metals and excluded proteins from the milk, and could be easily separated using a neodymium magnet. The method was validated and proved to be simple, fast, sensitive, and selective, with a determination coefficient of 0.998 and a limit of quantification of 10 μg/L for both Pb2+ and Cd2+ ions, below the maximum residue limits in Brazil.
FOOD ANALYTICAL METHODS
(2023)
Review
Chemistry, Analytical
Nasrullah Syed Shah, Mustafa Soylak
Summary: This study discusses the importance of detecting trace elements in edible oils and proposes solutions. Emphasis is placed on the necessity of simplifying the sample treatment process and introduces methods for analyzing trace elements in oils.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Wenxian Zhang, Jun Chen, Guangchun Xiao, Weiguang Su, Anqing Li, Pengbo Liu, Wenhong Zhang, Xiangxiang Zhou, Chonghai Xu, Li Wang
Summary: A novel hydrogel electrode for simultaneous detection of Cd2+ and Pb2+ was developed, showing good electrochemical performance and sensitivity in experiments. By optimizing the modification conditions, the selectivity and detection limit of the hydrogel electrode can be improved, making it suitable for detecting heavy metal ions in real human serum samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Review
Environmental Sciences
Maciej Marcin Durkalec, Agnieszka Nawrocka, Ignacy Kitowski, Aleksandra Filipek, Bartosz Sell, Miroslawa Kmiecik, Piotr Jedziniak
Summary: The golden eagle and white-tailed eagle in Poland have been found to accumulate different environmental contaminants, including toxic elements. Analysis of liver samples revealed interspecific and regional differences in the levels of certain trace elements. Despite most elements being below the suggested thresholds for adverse health effects, the presence of hepatic lead in some individuals suggests an ongoing threat to the health of Polish eagles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Analytical
Xing Liu, Linjie Chen, Huan Peng, Guan Wang, Nicholas Stanley Belshaw, Hongtao Zheng, Shenghong Hu, Zhenli Zhu
Summary: A fast, highly sensitive and cost-effective method for Cd isotopic analysis has been developed based on plasma electrochemical vapor generation (PEVG) coupled with MC-ICPMS. PEVG enhances sensitivity by more than 6 times compared with conventional pneumatic nebulization (PN) system and simplifies the complex purification process.
ANALYTICA CHIMICA ACTA
(2022)
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)