Article
Biochemical Research Methods
Alexander Winckelmann, Dalia Morcillo, Silke Richter, Sebastian Recknagel, Jens Riedel, Jochen Vogl, Ulrich Panne, Carlos Abad
Summary: A fast, simple, and cost-effective analytical procedure for traceable determination of lithium concentration in human serum has been proposed. The method is based on monitoring lithium isotope dilution through the partially resolved isotope shift in its electronic transition. The results are comparable to more complex and expensive techniques such as isotope dilution mass spectrometry.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Food Science & Technology
Oluwatofunmilayo Arike Diyaolu, Alfred F. Attah, Emmanuel T. Oluwabusola, Jones Olanrewaju Moody, Marcel Jaspars, Rainer Ebel
Summary: The study compared and analyzed VA and OG vegetable samples from crude oil-rich and crude oil-free communities, revealing significant differences in proximate composition and heavy metal content between the communities, with VA from crude oil-spill areas showing higher toxicity.
Article
Chemistry, Analytical
Nail Altunay, Adil Elik
Summary: A new and green analytical method using UA-alkanol-based-SUPRAS-ME coupled with FAAS detection was developed for extraction and determination of cadmium in food and environmental samples, showing good linear calibration graphs, acceptable limits of detection, and reliable recovery rates. Total cadmium concentrations were successfully determined in the specified ranges for both food and environmental samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Applied
Fernanda Garcia de Almeida, Milena do Prado Ferreira, Mariana Gava Segatelli, Alexandra Beal, Wilma Aparecida Spinosa, Fabio Antonio Suquila Cajamarca, Cesar Ricardo Teixeira Tarley
Summary: A solid phase preconcentration method for cobalt determination at trace levels was developed using a cross-linked polymer as an efficient adsorbent, achieving high sensitivity and recoveries ranging from 91-104% in different samples.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Chemistry, Analytical
Daisuke Kozaki, Masanobu Mori, Shinichi Hamasaki, Tomotaka Doi, Souma Tanihata, Atushi Yamamoto, Takeshi Takahashi, Koutarou Sakamoto, Shigeto Funado
Summary: A simple method using enclosed quartz cell and cold vapour-atomic absorption spectrometry is proposed for determining total inorganic mercury in solution, achieving similar precision to conventional methods while reducing sample volume, reductant, and cost.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Multidisciplinary
Ibrahim A. Darwish, Zongzhi Wang, Ryhan J. Darling, Nourah Z. Alzoman
Summary: This study describes the development of two highly sensitive and selective sensor-assisted fluorescence immunoassays for the trace determination of copper ions, Cu(ii) residues, in food samples. Both assays showed satisfactory accuracy and precision, and had significant advantages over conventional atomic spectrometric methods.
Article
Chemistry, Analytical
Tengpeng Liu, Jixin Liu, Xuefei Mao, Xudong Huang, Yongzhong Qian
Summary: In this work, a novel composite Pt/Ni trap was fabricated to trap Hg and Cd simultaneously, and a solid sampling Hg-Cd analyzer was developed using an MCH, a composite Pt/Ni trap, and an AFS. The Pt/Ni trap fulfilled the complete trapping and fast release of Hg and Cd. Under optimized conditions, the method detection limits of Hg and Cd reached 0.4 μg/kg and 0.04 μg/kg, the RSDs were within 12% and 8%, and the recoveries ranged from 96% to 105%. The proposed Hg-Cd analyzer is suitable for rapid detection of Hg and Cd in soil samples.
ANALYTICAL CHEMISTRY
(2023)
Article
Spectroscopy
Joanna Dobrzynska, Marzena Dabrowska, Ryszard Dobrowolski, Kinga Morlo
Summary: Pt(IV) ion-imprinted thiocyanato-functionalized SBA-15 material (Pt(IV)S1) was used for preconcentration of Pt(IV) ions from digested geological samples before ETAAS determination. The ion-imprinted material showed high adsorption affinity and selectivity towards Pt(IV) ions. The proposed procedure achieved a high enrichment factor of 38 and a low limit of quantification of 0.079 mg kg-1.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Multidisciplinary Sciences
Michelle Gende, Martina Schmeling
Summary: An analytical method was developed for the determination of lead and cadmium in biological samples. The method showed high recovery, repeatability, and specificity. It was first applied to lead determination and then extended for cadmium determination.
Review
Chemistry, Analytical
Guanghui Niu, Alexander Knodel, Sebastian Burhenn, Sebastian Brandt, Joachim Franzke
Summary: The development of miniature, sensitive, high throughput, and in-situ analytical instruments using dielectric barrier discharge (DBD) has become a hot topic in modern analytical chemistry. DBD offers advantages such as easy operation, simple configuration, ambient working temperature and pressure, low power consumption, and miniature dimension. Its applications in analytical atomic spectrometry include serving as excitation or atomization sources in AES, AAS, and AFS, as well as functioning as a vapor generation system.
ANALYTICA CHIMICA ACTA
(2021)
Article
Spectroscopy
Yan Wu, Dingming Huang, Tong Feng, Lanlan Jin, Dan Xiong, Jie Yu, Qian Xu, Ruimin Huang, Shenghong Hu
Summary: An effective method for trace silver detection in geological samples was developed using aerosol dilution inductively coupled plasma-mass spectrometry after extraction with inverse aqua regia to reduce interference from Nb and Zr. The method was successfully applied to determine silver levels in various geological samples with promising accuracy.
ATOMIC SPECTROSCOPY
(2021)
Review
Food Science & Technology
Jorgelina Zaldarriaga Heredia, Marcelo Wagner, Florencia Cora Jofre, Marianela Savio, Silvana Mariela Azcarate, Jose Manuel Camina
Summary: Food products, especially those with high value-added, undergo strict quality controls to attest to their specific features. The use of multi-element composition analysis combined with chemometrics has proven to be an effective method for food authentication and quality control. This review provides an overview of the state-of-the-art in this field, highlighting the characteristics and strengths and weaknesses of applied analytical techniques.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Chemistry, Analytical
Long Li, Kehan Xu, Zuohua Huang, Xinxin Xu, Jibran Iqbal, Liang Zhao, Yiping Du
Summary: The new method proposed in this study utilizes in-syringe membrane SPE and solid-phase visible spectral method for the rapid extraction and determination of trace Cu2+. It simplifies the experimental procedure, improves sensitivity, avoids the use of organic solvents, and is environmentally friendly. The method has been validated for the determination of trace Cu2+ in water and blood plasma samples with a LOD of 0.04 μg L-1 and recoveries of 96.0-103.7%.
ANALYTICAL METHODS
(2021)
Article
Spectroscopy
Ignacio Lopez-Garcia, Maria J. Munoz-Sandoval, Manuel Hernandez-Cordoba
Summary: Silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) can be extracted from their ions using magnetic dispersive micro-solid phase extraction with non-functionalised ferrite particles. The extraction is based on controlling the acidity of the medium, without involving oxidation-reduction processes. The analytes are desorbed and determined by electrothermal atomization atomic absorption spectrometry. The method has a high enrichment factor, low detection limits, and good reproducibility.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Chemistry, Applied
Tugce Unutkan Gosterisli, Buse Tugba Zaman, Emine Gulhan Bakirdere, Seyfullah Keyf, Sezgin Bakirdere
Summary: A new, green, and simple liquid-phase microextraction method, sieve conducted two syringe-based pressurized liquid-phase microextraction methods, combined with flame atomic absorption spectrometry for the preconcentration and determination of cobalt. The utilized ligand as complexing agent was synthesized in the laboratory, and the developed method showed a 33.7-fold enhancement in detection power. This method was effectively applied for the determination of cobalt in quince samples.
