Article
Biochemistry & Molecular Biology
Waree Boonmee, Kritsada Samoson, Janjira Yodrak, Adul Thiagchanya, Apichai Phonchai, Warakorn Limbut
Summary: A simple and highly sensitive electrochemical sensor was developed for alprazolam, showcasing good selectivity, repeatability, and recovery. The sensor operated under optimized conditions and displayed excellent analytical performance in detecting alprazolam in beverages.
Review
Chemistry, Physical
Edyta Wlazlowska, Malgorzata Grabarczyk
Summary: The main purpose of this review is to introduce methods of adsorptive stripping voltammetry for determining trace amounts of VO2(+) in various types of samples. The achieved detection limits using different working electrodes are presented. Factors influencing the obtained signal, including the complexing agent and working electrode selection, are discussed. The paper also analyzes the influence of foreign ions and organic matter on vanadium signal in natural samples, and presents methods of elimination related to surfactants in samples. The simultaneous determination of vanadium with other metal ions using adsorptive stripping voltammetry is characterized. The practical use of the developed procedures, mainly for analyzing food and environmental samples, is summarized in tabular form.
Article
Chemistry, Analytical
Scarlett Aguilera, Erick Flores, Rodrigo Segura, Herna Barrientos, Paulina Marquez, Camilo Garcia, Felipe Matamala-Troncoso, Jaime Pizarro, Maria Aguirre
Summary: In this study, a glassy carbon electrode modified with reduced graphene oxide was prepared and used for the determination of zaleplon. The modified electrode showed good accuracy and reproducibility in detecting zaleplon in saliva samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Thi Kim Thuong Nguyen, Thi Huong Giang Le, Nhan Thi Thanh Pham, Thi Hoa Hoang, Ha Phuong Nguyen, Mua Xuan Nguyen, Minh Huong Giang Dang, Huy Hoang Do, Thi Thao Ta, Xuan Thanh Bui
Summary: In this study, a glassy carbon electrode modified with electrochemical reduced graphene oxide (ErGO/GCE) was used to determine amaranth in soft drink and candy samples by adsorptive stripping voltammetry. The ErGO/GCE was fabricated through an electrochemical reduction process, and the characteristics of the graphene oxide and reduced graphene oxide were studied. The optimal conditions for determining amaranth were determined, and the proposed method can be applied for amaranth dye analysis in food.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Mehdi Baghayeri, Amirhassan Amiri, Fatemeh Karimabadi, Sabrina Di Masi, Behrooz Maleki, Fatemeh Adibian, Ali Reza Pourali, Cosimino Malitesta
Summary: This study presents the novel synthesis, characterisation, and application of magnetic multi-walled carbon nanotubes modified with polyamidoamine dendrimers as a highly sensitive and selective recognition element in sensor development for the electrochemical determination of As(III) in water matrices. The developed sensor showed high sensitivity and selectivity against possible interferents, with a limit of detection of 0.46 μg/L. Its suitability in spiked water samples was also discussed.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Yanjie Zheng, Li Chen, Xinyang Yin, Fei Lin, Yichun Xu, Xinhua Lin, Shaohuang Weng
Summary: A dual-mode electrochemical biosensor has been developed for the sensitive detection of femtomolar miRNA-155 using electrochemiluminescence (ECL) and adsorptive stripping voltammetry (AdsSV). The sensor demonstrates high selectivity, reproducibility and long-term stability, providing a practical platform for rapid, simple, selective and reliable detection of miRNAs.
MICROCHEMICAL JOURNAL
(2021)
Article
Electrochemistry
Marzena Adamczyk, Malgorzata Grabarczyk
Summary: A novel solid bismuth microelectrode combined with adsorptive stripping voltammetry was used to develop a simple and fast method for tin determination. The method involved the formation of a tin complex with cupferron in solution and deposition on the solid bismuth microelectrode. Optimal parameters were determined to achieve a linear response and a low detection limit for Sn(II), and interferences from foreign ions and organic matrix were studied.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Hanaa S. El-Desoky, Amr M. Beltagi, Mohamed M. Ghoneim, Ahmed El-Hadad
Summary: An efficient and environmentally-friendly method for the simultaneous determination of three heavy metal ions was developed using modified electrodes. The use of nanomaterials significantly improved electron transfer processes, enabling preconcentration and detection of the metal ions. This sensor showed good selectivity, stability, and reproducibility, with low LOD values below the safety limits set by the WHO for drinking water.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Victor Padilla, Nuria Serrano, Jose Manuel Diaz-Cruz
Summary: A commercial and disposable screen-printed carbon electrode (SPCE) was proposed for fast, simple, and low-cost determination of Ni(II) at very low concentration levels by DPAdSV. The method achieved well-defined stripping peaks, linear dependence of peak area on Ni(II) concentration, and excellent reproducibility. The SPCE showed great potential for application in wastewater analysis, demonstrating remarkable trueness and very good reproducibility.
Article
Chemistry, Analytical
Gul Sirin Ustabasi, Clara Perez-Rafols, Nuria Serrano, Jose Manuel Diaz-Cruz
Summary: The simultaneous determination of iron and copper using an unmodified screen printed carbon electrode and the complexation with o-phenanthroline assisted by the reducing agent ferrocyanide was successfully achieved. This method has low detection limits and a wide linear response range, allowing for the avoidance of interference between iron and copper and the simultaneous determination of low and high metal concentrations typically found in the environment. Analysis of a certified wastewater reference material confirmed the precision and accuracy of the proposed method.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Antonella de las M. Biasi, Eduardo A. Takara, Maria L. Scala-Benuzzi, Agustina M. Valverde, Nidia N. Gomez, German A. Messina
Summary: Currently, there is a demand for fast and sensitive methods to monitor metals in water due to their increasing presence in the environment. This study evaluated different polymeric nanocomposites for the simultaneous electrochemical determination of Cu, Cd, and Zn in water samples. Screen-printed carbon electrodes were modified with nanocomposites containing graphene, graphite oxide, and polymers like polyethyleneimide, gelatin, and chitosan. The modified electrodes showed excellent performance for detecting metal ions in water samples using square-wave anodic stripping voltammetry.
ANALYTICA CHIMICA ACTA
(2023)
Article
Electrochemistry
Nelia A. Sanga, Nazeem Jahed, Zandile Leve, Emmanuel I. Iwuoha, Keagan Pokpas
Summary: This study developed a novel method for simultaneous detection of Cd2+, Cu2+, Pb2+, and Zn2+ concentrations using electrochemically reduced graphene oxide (ERGO) sheets in combination with low-cost disposable pencil graphite rods and in situ plated thin mercury films (HgF). The technique showed improved sensitivity and negligible intermetallic interferences, and was successfully applied to trace metal determination in tap water.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Agnieszka Krolicka, Jerzy Zarebski, Andrzej Bobrowski
Summary: This paper presents and discusses voltammetric analytical procedures that use vanadium(IV) and aminopolycarboxylic complexes of V(IV). The focus is on the mechanism of vanadium-catalyzed reactions that amplify the analytical signal of Ge(IV). The analytical efficacy of different catalytic systems is compared, and the optimal parameters of the respective procedures are reported.
Article
Chemistry, Analytical
Kequan Xu, Clara Perez-Rafols, Amine Marchoud, Maria Cuartero, Gaston A. Crespo
Summary: The use of HMDE for multi-ion analysis offers unique advantages such as good reproducibility and superior detection performance, but its continued usage is questioned due to the high toxicity of mercury. Research has demonstrated the HMDE's ability to rapidly and accurately analyze multiple metal ions in complex matrices. Further efforts are needed to definitively replace the HMDE in electroanalysis despite elegant alternatives proposed in the literature.
Article
Chemistry, Analytical
Ferenc T. Pastor, Biljana P. Dojcinovic, Igor D. Kodranov, Stanislava Z. Gorjanovic, Tijana Ivanovic, Daniela Z. Popovic, Jelena Miladinovic
Summary: This study investigated the benefits of optimizing a stripping method for the simultaneous determination of Ni2+ and Co2+ so that it only determines one of them (Ni2+). The optimized method showed lower LOQ, lower influence of Co2+, and the ability to use one calibration line for a wide range of Ni2+ concentrations. Additionally, the method was successfully applied for nickel content determination in real samples.
Article
Geosciences, Multidisciplinary
Hoil Lee, Jin-Young Lee, Jaesoo Lim
Summary: This study in Yeosu, Korea, analyzed past hydrologic behavior by examining sediment grain size variability, revealing different sedimentary sequences and linking grain size changes to freshwater input fluctuations. The long-term variations were similar to Asian summer monsoon fluctuations and correlated with past El Nino-Southern Oscillation activity, showing intensified freshwater input during stronger ENSO periods. Severe rainfall events characterized by sand layers were identified as isochronous sedimentary layers on the southern coast of Korea.
GEOSCIENCES JOURNAL
(2022)
Article
Engineering, Environmental
Pyeong-Koo Lee, Jaesoo Lim, Youn-Joong Jeong, Seho Hwang, Jin-Young Lee, Byoung-Young Choi
Summary: This study assessed metal(loid) pollution in Gunsan Reservoir, South Korea, over the last century by analyzing metal(loid) concentrations, Pb isotope ratios, and 210Pb dating of sediments. It was found that contributions of Cu smelting and Asian dust influx to pollution varied over time, highlighting the importance of understanding changes in pollution sources for environmental management.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Geography, Physical
Jin Cheul Kim, Dong-Geun Yoo, Seok-Hwi Hong, Hyun Ho Yoon, Seungwon Shin, Min Han, Jooah Choi, Daekyo Cheong, Jin-Young Lee, Hanwoo Choi
Summary: The study of six boreholes in the Nakdong River delta area in South Korea revealed fluctuations in sedimentation rates and histories over the past 12,000 years, influenced by sea level changes and climate. In the past 2,000 years, rapid delta progradation in the region was attributed to human activities and monsoonal climatic changes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Engineering, Marine
Mirye Park, Sang Deuk Lee, Hoil Lee, Jin-Young Lee, Daeryul Kwon, Jeong-Min Choi
Summary: Suncheonman Bay is Korea's representative estuary wetland, with diverse biological and geochemical studies conducted. A recent study focused on fossil diatoms in sediment cores, identifying several newly recorded diatom species in the area. Further research is needed to explore the ecological habitats of these newly discovered species.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Geology
Sei Sun Hong, Jin Young Lee
Summary: Based on aggregate extraction statistics, this study analyzed the demand and supply of aggregate resources in each local government in Korea. The findings show that aggregate extraction is widespread across the country, but there are regional and quantitative differences in the types and development of aggregates.
ECONOMIC AND ENVIRONMENTAL GEOLOGY
(2021)
Article
Marine & Freshwater Biology
Kota Katsuki, Jaesoo Lim, Jin-Young Lee
Summary: This study examines the relationship between tidal levels and diatom assemblage and grain size distributions in sediments of Jujin Stream, a tributary of Gomso Bay in Western Korea. The results show clear gaps in diatom and grain size distributions between tidal, fluvio-tidal transition, and freshwater zones. Combining diatom and grain size data can provide accurate paleo sea-level information for strongly tidal areas.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Junghae Choi, Wook-Hyun Nahm, Chang-Pyo Jun, Jin-Young Lee, Gwang-Ryul Lee, Buhm-Soon Park, Guan-Hong Lee, Andrew C. Kemp
Summary: Based on old documents and sediment cores, it was found that historical sea-level changes in Gomso Bay in the western Korean Peninsula have fluctuated due to topographic gradients and the shape of the bay. Sea-level rise began earlier than the end of the Little Ice Age, likely due to meltwater from the Greenland Ice Sheet in the early 1700s.
Article
Geology
Jin-Young Lee, Sei Sun Hong
Summary: The study analyzed aggregate supply-demand characteristics and distribution status based on supply location, demand location, and transportation network using GIS network analysis. The results showed average transport distances and simulated service area distributions, providing important guidance for quantitatively interpreting aggregate supply-demand and establishing basic aggregate plans.
ECONOMIC AND ENVIRONMENTAL GEOLOGY
(2021)
Article
Archaeology
Seungwon Shin, Yong-Hee Park, Jaesoo Lim, Daekyo Cheong, Seung-Yup Choi, Jeong-Heon Choi, Chang-Pyo Jun, Hyoun Soo Lim, Jin-Young Lee
Summary: This study investigated the relationship between the location of Paleolithic sites in Korea and past climate change. The findings suggest that climate conditions are essential in the development of Paleolithic cultural layers.
GEOARCHAEOLOGY-AN INTERNATIONAL JOURNAL
(2022)
Article
Geology
Byoung-Woon You, Jin-Young Lee, Dong-kil Lee, Young-Wook Cheong
Summary: This study evaluated the effect of weathering on the particle size distribution and amount of fine particles generated during the crushing of igneous rock. The results showed that higher weathering degrees led to a smaller particle size distribution and an increased proportion of fine particles.
ECONOMIC AND ENVIRONMENTAL GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jin-Young Lee, Seungwon Shin, Hyun Ho Yoon, Jin Cheul Kim, Yire Choi, Wook-Hyun Nahm, Heejung Kim
Summary: In this study, the researchers analyzed a sediment core from the Hapcheon Basin to investigate the sedimentary facies and the history of the Hapcheon impact crater. The results showed that the impact crater was filled with sediments from the surrounding mountains after the meteorite impact, and the basin transitioned from a lake environment to an alluvial fan setting. The sediment cores also contain important information about volcanic and seismic events on the Korean Peninsula over the past 1.3 million years.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geology
Sei Sun Hong, Jin Young Lee
Summary: The purpose of this study is to understand the annual production of aggregates and the prospects of supply and demand. In 2021, a total of 135 million m3 of aggregates was produced in Korea, slightly higher than the total production in 2020. Among these, about 47 million m3 of sand and 88 million m3 of gravel were produced. About 46% of the total quantity of aggregates were produced with permission and the rest were produced after declaration.
ECONOMIC AND ENVIRONMENTAL GEOLOGY
(2023)
Correction
Geology
Sei Sun Hong, Choon Oh Lee, Jaesoo Lim, Jin Young Lee, Ung San Ahn
ECONOMIC AND ENVIRONMENTAL GEOLOGY
(2021)
Article
Geology
Sei Sun Hong, Choon Oh Lee, Jaesoo Lim, Jin Young Lee, Ung San Ahn
Summary: This study reports the Ar-Ar dating results for the volcanic rocks from small volcanoes in the Hallasan Nature Reserve on Jeju Island, indicating volcanic activity started around 192 ka ago. The research found the oldest record of volcanic activity in the area, as well as approximately 8 volcanic activities with some related to trachyte dome formation and others related to trachyte flow or dyke. The volcanic activity in the Hallasan Natural Reserve started in the northwest area, moved southwards and eastwards, culminating in the volcanic activity related to the formation of Baengnokdam.
ECONOMIC AND ENVIRONMENTAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Seungwon Shin, Jin-Cheol Kim, Sangheon Yi, Jin-Young Lee, Taejin Choi, Jong-Sun Kim, Yu Roh, Min Huh, Hyeongseong Cho
Summary: Damyang Wetland, designated as the first wetland protection area in South Korea and a candidate area for the Mudeungsan Area UNESCO Global Geopark, has undergone sedimentary environment reconstruction through core samples, sedimentary facies analysis, and age datings. The area, formed during the late Pleistocene, transitioned from a braided river to a meandering river environment as the climate warmed around 6,000 years ago, ultimately leading to the formation of Damyang Wetland after the construction of Damyang Lake in the 1970s.
JOURNAL OF THE KOREAN EARTH SCIENCE SOCIETY
(2021)
