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
Spectroscopy
Ondrej Zverina, Monika Vychytilov, Jaqueline Rieger, Walter Goessler
Summary: This article presents a rapid and accurate method for determining the zinc and iron content in food using high-resolution continuum source graphite-furnace atomic absorption spectrometry. By monitoring a narrow spectral interval, both elements can be measured simultaneously in a single firing, making the analysis fast and sensitive. Analysis of a large set of vegetable samples indicates higher zinc and iron contents in homegrown vegetables compared to store-bought ones.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
Angelica C. Frohlich, Leticia S. F. Pereira, Andrizia F. Junges, Erico M. M. Flores, Jose N. G. Paniz, Fabio A. Duarte
Summary: A new method for the determination of Co, Cr, Cu, Mn and Ni in pitch using DS-GF AAS technology was proposed, showing multiple advantages. The sample handling process of pitch was simplified and no chemical modifier was required for the analysis.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2021)
Article
Chemistry, Analytical
Pilaipan Chaikhan, Yuthapong Udnan, Richmond J. Ampiah-Bonney, Wipharat Chuachuad Chaiyasith
Summary: A novel hybrid air-assisted solvent terminated dispersive liquid-liquid microextraction (AA-ST-DLLME) method using a domestic fish-tank pump as a bubble generator was developed for the determination of Pb in water and beverage samples by GFAAS. The method achieved a high enrichment factor, preconcentration factor, and extraction efficiency under optimized conditions, with low LOD and LOQ. The method was successfully applied for the determination of trace level of Pb in various samples, with satisfactory spiked recovery results and good agreement with standard reference materials.
MICROCHEMICAL JOURNAL
(2021)
Article
Spectroscopy
Denis S. Irisov, Rustam Kh Musin, Yuri A. Zakharov
Summary: A new two-stage probe atomization method was proposed for determining total arsenic in urine, using a high-resolution continuum source graphite furnace atomic absorption spectrometer. This method effectively separates arsenic from matrix components, with a low detection limit and a wide quantification range.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Mikhail Yu Burylin, Elena S. Kopeyko, Viktoriya A. Bauer
Summary: The study compared the determination characteristics of copper and manganese in seawater by high-resolution continuum-source and low-resolution line-source graphite furnace atomic absorption spectrometry. HR-CS GFAAS can determine elements in undiluted samples, while LR-LS GFAAS only allows determination at double dilution. The detection and quantification limits for manganese were significantly lower in HR-CS GFAAS.
ANALYTICAL LETTERS
(2022)
Article
Chemistry, Analytical
Emmanouil Evgenakis, Katerina Giouri, Anna Bourliva, Christophoros Christophoridis, Constantinos K. Zacharis, Konstantinos Fytianos
Summary: In recent years, tattooing has emerged as a popular form of self-expression and art. However, the process of injecting ink into the skin for tattoos exposes individuals to various elements, posing potential health risks. This study examined the presence of 8 elements in different tattoo ink colors available in the Greek market, imported from the USA and China. The results showed that most inks contained chromium, copper, nickel, and lead, with higher concentrations found in brown ink from the USA.
ANALYTICAL LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Amir Ghaderi, Amir Hossein Khoshakhlagh, Masoome Irani, Azam Ghaseminezhad, Prem Gautam, Nezam Mirzaei, Hamid Reza Banafshe, Bahador Nemati, Heshmatollah Moradpour Ghalerashidi
Summary: This study investigated the levels of heavy metals and elements in urine and blood of hookah users and non-users, as well as their clinical symptoms. Results showed significantly higher levels of lead, arsenic, and thallium in hookah users compared to non-users, along with common clinical symptoms of constipation and fatigue. These findings can guide policy development to regulate hookah smoking and prevent associated health risks.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2023)
Article
Chemistry, Analytical
Juntao Yan, Chenghao Zhang, Chunlei Wang, Dengbo Lu, Shizhong Chen
Summary: This study proposes a new method based on direct immersion dual-drop microextraction for simultaneous speciation and enrichment of V(IV) and V(V). The method avoids tedious and complicated pre-oxidation/pre-reduction and centrifugation/filtration operations, and has been successfully applied to determine V(IV) and V(V) in water samples.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Applied
Shizhong Chen, Juntao Yan, Chunlei Wang, Chenghao Zhang, Dengbo Lu
Summary: A two-step direct immersion single-drop microextraction (TS-DI-SDME) procedure was developed for the separation and enrichment of Tl(III) and Tl(I) before graphite furnace atomic absorption spectrometry detection. Tl(III) formed complexes and was extracted into one organic drop, while Tl(I) remained in the solution. The method demonstrated satisfactory detection limits, repeatability, and reproducibility, and was successfully applied to food sample analysis.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Food Science & Technology
Karl Bryan S. Perelonia, Kathlene Cleah D. Benitez, Riza Jane S. Banicod, Gezelle C. Tadifa, Flordeliza D. Cambia, Ulysses M. Montojo
Summary: This paper validates an analytical method for determining heavy metal content in fish and fishery resources using microwave-assisted digestion method combined with Graphite Furnace Atomic Absorption Spectrometry (GFAAS) and Cold Vapor Atomic Absorption Spectrometry (CVAAS). The method showed high reliability and accuracy in terms of experimental parameters, linearity, and accuracy.
Article
Chemistry, Applied
Juntao Yan, Chenghao Zhang, Chunlei Wang, Dengbo Lu, Shizhong Chen
Summary: A direct immersion dual-drop microextraction (DIDDME) method was developed for the separation and preconcentration of Cr(III) and Cr(VI). Using two organic drops on needle tips of microsyringes, each containing a specific chelating reagent, Cr(III) and Cr(VI) were selectively extracted into different drops. The method showed low detection limits, wide linear range, high enrichment factors, and good precision, and was successfully applied to quantify Cr(III) and Cr(VI) in food samples.
Article
Spectroscopy
Bingshan Zhao, Man He, Beibei Chen, Bin Hu
Summary: A magnetic porous organic polymer (MPOPs) with good magnetism, high porosity, and large surface area was synthesized in aqueous phase. This material showed fast adsorption kinetics and high adsorption capacities towards lead and mercury ions. A magnetic solid phase extraction method coupled with graphite furnace atomic absorption spectrometry was developed for trace lead and mercury determination in environmental water samples using the prepared MPOPs as a sorbent. The method exhibited low detection limits and satisfactory recoveries.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Energy & Fuels
Vikas Sharma, Abul Kalam Hossain, Alamgir Ahmed, Ahmed Rezk
Summary: Using waste cooking oil to produce biodiesel and adding graphene and graphite nanoparticle additives can improve combustion characteristics, reduce exhaust emissions, and improve engine efficiency.
Article
Chemistry, Analytical
Zofia Kowalewska, Carlos Abad, Michael Okruss, Sebastian Recknagel
Summary: This study aimed to evaluate the potential of high-resolution continuum source molecular absorption spectrometry (HR-CS MAS) in determining the new element vanadium. Using VO as the target molecule, high-resolution overview spectra were obtained and analyzed in a wide range of wavelengths. A unique instrumental setup combining a prototype Modular Simultaneous Echelle Spectrograph (MOSES) and a commercial HR-CS MAS apparatus was employed. The results showed that HR-CS MAS can be used to determine vanadium in heavy petroleum oil catalysts using a flame version of the spectrometer. However, the sensitivity was relatively poor and only a small population of VO molecules could be generated in graphite furnace measurements.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Chemistry, Analytical
Vanderlea de Souza, Michele Schantz, Vinicius L. Mateus, Rosana M. Alberici, Eliane C. P. do Rego, Werickson F. Rocha, Janaina M. Rodrigues, Marcos N. Eberlin
ANALYTICAL METHODS
(2016)
Article
Chemistry, Analytical
Vanderlea de Souza, Janaina Marques Rodrigues, Raquel Duarte da C. Cunha Bandeira, Laura A. das Neves Valente, Marcus Vinicius Barreto Sousa, Viviane Fernandes da Silva, Rafael Agostinho Lemos da Silva
ACCREDITATION AND QUALITY ASSURANCE
(2008)
Article
Chemistry, Analytical
Livia S. Eberlin, Patricia V. Abdelnur, Alan Passero, Gilberto F. de Sa, Romeu J. Daroda, Vanderlea de Souza, Marcos N. Eberlin
Review
Chemistry, Analytical
Rosana M. Alberici, Rosineide C. Simas, Vanderlea de Souza, Gilberto F. de Sa, Romeu J. Daroda, Marcos N. Eberlin
ANALYTICA CHIMICA ACTA
(2010)
Article
Biochemical Research Methods
Wanderson Romao, Priscila M. Lalli, Marcos F. Franco, Gustavo Sanvido, Nicolas V. Schwab, Rafael Lanaro, Jose Luiz Costa, Bruno D. Sabino, Maria Izabel M. S. Bueno, Gilberto F. de Sa, Romeu J. Daroda, Vanderlea de Souza, Marcos N. Eberlin
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2011)
Article
Energy & Fuels
Rosana M. Alberici, Vanderlea de Souza, Gilberto F. de Sa, Sidney R. Morelli, Marcos N. Eberlin, Romeu J. Daroda
BIOENERGY RESEARCH
(2012)
Article
Chemistry, Physical
Priscila M. Lalli, Yuri E. Corilo, Gilberto F. de Sa, Romeu J. Daroda, Vanderlea de Souza, Gustavo H. M. F. Souza, Iain Campuzano, Guenter Ebeling, Jairton Dupont, Marcos N. Eberlin
Article
Energy & Fuels
Rosana M. Alberici, Rosineide C. Simas, Patricia V. Abdelnur, Marcos N. Eberlin, Vanderlea de Souza, Gilberto F. de Sa, Romeu J. Daroda
Article
Biochemical Research Methods
F. G. M. Violante, L. H. P. Bastos, M. H. W. M. Cardoso, J. M. Rodrigues, A. V. Gouvea, C. N. Borges, P. R. da F. Santos, D. da S. Santos, H. C. de A. Goes, V. Souza, A. de Sao Jose, R. D. C. C. Bandeira, V. Cunha, A. Nobrega
JOURNAL OF CHROMATOGRAPHIC SCIENCE
(2009)
Article
Biochemical Research Methods
Evelyn de F. Guimaraes, Janaina M. Rodrigues, Marcus H. C. de la Cruz, Andre V. Sartori, Vanderlea de Souza, Jose Daniel Figueroa-Villar
JOURNAL OF CHROMATOGRAPHIC SCIENCE
(2013)
Article
Chemistry, Applied
R. C. Simas, D. Barrera-Arellano, M. N. Eberlin, R. R. Catharino, V. Souza, R. M. Alberici
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2012)
Article
Chemistry, Multidisciplinary
Patricia V. Abdelnur, Sergio A. Saraiva, Rodrigo R. Catharino, Mirela Coelho, Nicolas Schwab, Camila M. Garcia, Ulf Schuchardt, Vanderlea de Souza, Marcos N. Eberlin
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2013)
Article
Chemistry, Multidisciplinary
Janaina M. Rodrigues, Evelyn F. Guimaraes, Marcus V. B. Sousa, Viviane F. Silva, Isabel C. S. Fraga, Vanderlea Souza, Valnei S. Cunha
Article
Green & Sustainable Science & Technology
Silvio Francisco dos Santos, Humberto Siqueira Brandi, Suzana Borschiver, Vanderlea de Souza
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2017)