Article
Chemistry, Analytical
Faisal Faiz, Jun-qin Qiao, Hong-zhen Lian, Li Mao, Xiao-bing Cui
Summary: The study utilized mercapto- and amino-functionalized magnetic nanoparticles as sorbents for magnetic solid-phase extraction of arsenite and arsenate, followed by ICP-MS detection. Through optimization of various parameters, the combined scheme demonstrated excellent selectivity and anti-interference ability, achieving satisfactory results for the extraction and detection of both arsenic species.
Article
Chemistry, Applied
Binbin Kang, Haoliang Liu, Guoying Chen, Hetong Lin, Shaojun Chen, Tuanwei Chen
Summary: Novel COFs-based PAN@TpBD(NH2)(2) ECNMs were fabricated as strong anion exchange sorbent using electrospinning technology. The optimal conditions for pipette-tip solid phase extraction (PTSPE) procedures were investigated, and inorganic arsenic (iAs) was successfully separated from rice and quantified using hydride generation-atomic fluorescence spectrometry (HG-AFS). The PTSPE-HG-AFS methodology achieved a detection limit of 0.015 μg L-1, a relative standard deviation of 4.67%, and recoveries ranging from 86.48% to 99.11%. This study describes the preparation and characterization of the novel COFs-based anion exchange sorbent, PAN@TpBD(NH2)(2) ECNMs, and demonstrates its suitability for PTSPE applications.
Article
Chemistry, Analytical
Emir Nazdrajic, Khaled Murtada, Janusz Pawliszyn
Summary: Selecting the optimal binder and sorbent affinity can determine whether a composite behaves as an efficient extraction coating, permeable membrane, or impermeable barrier. For strong sorbents, extraction rate is primarily controlled by diffusion, with low analyte diffusion caused by retarding forces generated by partitioning into the sorbent.
ANALYTICAL CHEMISTRY
(2021)
Article
Environmental Sciences
Matthew C. Reid, Maria P. Asta, Lily Falk, Scott C. Maguffin, Vu Hoai Cong Pham, Hoang Anh Le, Rizlan Bernier-Latmani, Phu Le Vo
Summary: This study conducted a survey in the Mekong Delta and found no relationship between rice arsenic concentration and speciation with soil levels, but a strong correlation was observed between rice and groundwater arsenic concentrations. The study hypothesizes that surficial sediments with high concentrations of arsenic may serve as sources of arsenic to downgradient shallow aquifers.
Article
Chemistry, Analytical
Tao Li
Summary: An analysis method using mixed mode HPLC-ESI-MS has been developed to overcome the challenges in analyzing inorganic arsenic. The method involves the determination of arsenate and the conversion of arsenite to arsenate for total inorganic arsenic quantification. The method shows enhanced ionization efficiency for arsenate with the use of formic acid in elution.
Article
Materials Science, Multidisciplinary
Sebastian Leaper, Edgardo Oscar Avendano Caceres, Jose Miguel Luque-Alled, Sarah H. Cartmell, Patricia Gorgojo
Summary: The study demonstrates the high removal rates of inorganic arsenic from water using PVDF membranes enhanced by functionalized graphene oxide, showing potential for applications in areas with arsenic-contaminated groundwater. The enhanced membranes exhibited higher flux and stability, as well as improved permeate quality, compared to commercial PTFE membranes.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Analytical
Kingkan Pungjunun, Narong Praphairaksit, Orawon Chailapakul
Summary: An automated microfluidic electrochemical platform was developed for in-field analysis of arsenic speciation. The platform integrates electrochemical sensing and microfluidic channels to simultaneously determine As(III) and total inorganic As within a single device. The method offers numerous advantages, including simplicity, speed, low cost, and portability, making it highly promising for on-site analysis of inorganic arsenic.
Article
Chemistry, Applied
Bruno Elias dos Santos Costa, Nivia Maria Melo Coelho
Summary: A novel solid phase extraction procedure was developed for speciation of inorganic arsenic in rice samples. The method showed advantages of short extraction time, good recovery, and low residue formation, with high detection sensitivity and pre concentration factor for As(III). The procedure has potential for successful application in monitoring arsenic in real samples.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Article
Chemistry, Analytical
B. Krasnodebska-Ostrega, A. Drwal, E. Biadun, J. Kowalska
Summary: This paper presents a simple and quick procedure for the separation and analysis of As(iii) species in water systems. By using a C18 column saturated with APDC and acidified water samples, As(iii) anions can be effectively separated and the influence of other metal cations can be limited.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Applied
Francisco L. F. da Silva, Davino M. Andrade Neto, Fernando L. de Menezes, Ivero P. Sa, Julymar M. de Higuera, Pierre B. A. Fechine, Luelc S. da Costa, Ana R. A. Nogueira, Gisele S. Lopes, Wladiana O. Matos
Summary: A novel iron-magnetic nanomaterial functionalized with organophosphorus compound was utilized in arsenic speciation analysis in seafood samples, showing concentrations of inorganic arsenic between 20 and 100 μg kg(-1). The method demonstrated good accuracy, precision, low cost, and compliance with green chemistry principles, with a detection limit of 16.4 ng kg(-1).
Article
Environmental Sciences
Maozhong Zheng, Gang Li, Yongle Hu, Jerome Nriagu, Eric Fru Zama
Summary: The study found that arsenic pollution does not alter the distribution of elements like iron, manganese, copper, and zinc in rice grains, with arsenic mainly affecting sulfur, copper, and zinc in rice caryopsis.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Spectroscopy
Javier Peinador Asensio, Daniel Arnaiz Uceda, Pilar Jimenez Navarro
Summary: This study analyzed 33 different dried seaweed products purchased in local markets in Madrid, finding that some samples had high levels of cadmium, nickel, and lead which may pose a risk to consumers. Mercury levels were overall the lowest found, with Hijiki seaweed containing a considerable fraction of inorganic arsenic (iAs). Additionally, most seaweeds had iodine content surpassing recommended daily intakes, which could also pose a risk to consumers.
Article
Environmental Sciences
Shuai-Wen Zou, Kok Yuen Koh, Zhihao Chen, Yu-Yang Wang, J. Paul Chen, Yu-Ming Zheng
Summary: In this study, a Fe-Mn-Zr ternary magnetic sorbent was synthesized for efficient removal of both inorganic and organic arsenic species. The optimized sorbent showed higher adsorption capacity and the adsorption performance was affected by pH, contact time, and the presence of other anions in water. The mechanism study indicated that ion exchange and complexation were key processes in arsenic removal.
Article
Chemistry, Analytical
Joanna Kowalska, Alicja Drwal, Klaudia Tutaj, Lidiia Kovshun, Beata Krasnodebska-Ostrega
Summary: Reduction of Tl(iii) and oxidation of As(iii) occur immediately after sampling, making it necessary to separate the inorganic Tl and As species for reliable results in water speciation analysis. This study presents a simple and fast sample pretreatment method using ion exchange cartridges, allowing for on-site separation of Tl and As species. The separated species are quantified using ICP-MS in the effluent. Direct determination is particularly important for trace amounts of these species in seawater near harbors.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Applied
Sueleyman Bodur, Sezin Erarpat, Omer Faruk Tutar, Sezgin Bakirdere
Summary: This study proposes a method for speciation analysis of arsenic in edible oils using the HPLC-CFHG-FAAS system combined with the VA-RP-SFDF-LPME method. It can accurately quantify both arsenite and total inorganic arsenic in the matrix.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Applied
Hurriyet Yuce, Tugrul Guner, Suay Dartar, Beraat U. Kaya, Mustafa Emrullahoglu, Mustafa M. Demir
Article
Engineering, Multidisciplinary
Tugce A. Arica, Gokhan Topcu, Atamert Pala, Mustafa M. Demir
Article
Chemistry, Analytical
Ezgi Inci, Gokhan Topcu, Mustafa M. Demir
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Geochemistry & Geophysics
Celal Ciftci, Emre Karaburun, Serhat Tonkul, Alper Baba, Mustafa M. Demir, Mehmet Irfan Yesilnacar
Review
Materials Science, Multidisciplinary
Tugce A. Arica, Tugba Isik, Tugrul Guner, Nesrin Horzum, Mustafa M. Demir
Summary: In today's digital age, wearable electronics have become one of the most promising fields due to the increasing need and interest in personal and portable electronics. Nanogenerators, utilizing mechanical energy from human body activities, and fiber-structured functional materials with electrospinning technology are recognized as suitable energy sources with high efficiency. Electrospinning stands out as a promising technique for simple, versatile, and continuous fabrication of these energy applications.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Chemistry, Physical
Secil Sevim Unluturk, Ali Cagir, Canan Varlikli, Serdar Ozcelik
Summary: Impurities in trioctylphophine (TOP), specifically the presence of 1-octanol, have been shown to significantly impact the synthesis and photophysical properties of ZnCdSSe/ZnS colloidal nanocrystals. The deliberate addition of 1-octanol into TOP results in smaller particle size and modified spectral shifts, while also increasing nonradiative processes within the nanocrystals. This study suggests that 1-octanol plays a critical role as a functional impurity in tuning the particle size and photophysical processes of the nanocrystals.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Polymer Science
Caglar Erdem, Tugba Isik, Nesrin Horzum, Baki Hazer, Mustafa M. Demir
Summary: The accumulation of plastic waste in the oceans has become a major concern due to its harmful effects on marine life. This study focuses on the synthesis of bio-based polymers using vegetable oil initiators and metal nanoparticles, which show notable antibacterial activity. The research highlights the potential of using greener methods and materials in material preparation to replace petroleum-based plastics.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Hurriyet Yuce, Carlo A. R. Perini, Juanita Hidalgo, Andres-Felipe Castro-Mendez, Caria Evans, Pablo Franco Betancur, Jacob N. Vagott, Yu An, Kathryn Bairley, Mustafa M. Demir, Juan-Pablo Correa-Baena
Summary: Adding alkali metal halide SrI2 to perovskite films can improve their quality and modulate their properties. However, the effects vary at different concentrations of the additive.
Article
Chemistry, Physical
Hurriyet Yuce, Mukunda Mandal, Yenal Yalcinkaya, Denis Andrienko, Mustafa M. Demir
Summary: This study investigates the effect of B-site doping on the optoelectronic properties of CsPbX3 nanocrystals and finds that a small percentage of Sr2+ doping remarkably improves the photoluminescence quantum yield of perovskite nanocrystals and increases the luminous efficiency of white light-emitting diodes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Energy & Fuels
Alper Baba, Hasan Sozbilir, Tolga Sayik, Sinan Arslan, Taygun Uzelli, Serhat Tonkul, Mustafa M. Demir
Summary: The Balcova-Narlidere geothermal system in western Turkey is a promising extensional domain type geothermal play. With in-depth geological, hydrogeological, and geothermal studies, the feasibility of the geothermal field has been established. The heat resources in this area, with both shallow and deep reservoirs, have provided a solid foundation for the district heating system in Izmir. In addition, the successful implementation of geothermal cooling applications by Izmir Geothermal Energy Company Inc. showcases the potential for expanding cooling systems using geothermal energy.
Article
Energy & Fuels
Emre Karaburun, Yigit Sozen, Celal Ciftci, Hasan Sahin, Alper Baba, Umit Akbey, Mehmet Irfan Yesilnacar, Eray Erdim, Simona Regenspurg, Mustafa M. Demir
Summary: This study synthesized antimony sulfide deposits and tested the effect of various polymeric antiscalants with different functional groups on the solubility of antimony sulfide. The results showed that sulfonic acid groups were the most effective in preventing the formation of antimony sulfide.
Review
Chemistry, Analytical
Kubra Kahremanoglu, Hazal Tosun Kurtalan, Ahmet Emin Eroglu, Ezel Boyaci
Summary: The increasing exposure to chemicals in daily life necessitates comprehensive and easy monitoring of the body's response. Wearable extractive devices have emerged as promising tools that not only meet the needs of personal exposure investigations but also find applications in diagnostic and prognostic health monitoring.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Elif Gurel Ozyurt, Omer Ozyurt, Yekta Arya Olcer, Ahmet Emin Eroglu, Ezel Boyaci, Talal Shahwan
Summary: A selective and reliable method using molecularly imprinted polymers as solid phase extraction sorbent for the determination of ketoprofen in water and artificial serum has been developed. The method showed high selectivity towards ketoprofen and satisfactory results in spiked samples.
TURKISH JOURNAL OF CHEMISTRY
(2022)
Letter
Chemistry, Multidisciplinary
Ahmet Emin Eroglu
Summary: Prof. Dr. O. Yavuz Ataman, a respected academic and social figure, was known for his unique approaches and beloved character. His passing has resulted in a loss for the chemistry community, especially in the field of analytical chemistry.
TURKISH JOURNAL OF CHEMISTRY
(2021)
Review
Materials Science, Multidisciplinary
Ezgi Inci, Gokhan Topcu, Tugrul Guner, Merve Demirkurt, Mustafa M. Demir
JOURNAL OF MATERIALS CHEMISTRY C
(2020)