Article
Chemistry, Analytical
Hui Li, Jie Zhao, Shifan Zhao, Guofeng Cui
Summary: A novel three-electrode sensor was developed for simultaneous detection of Pb(II), Cd(II), and Zn(II) by depositing a bismuth film on a screen-printed gold working electrode. The sensor showed a wide linear range, low detection limits, good anti-interference ability, and stability. Such sensors are expected to be useful for portable heavy metal detection applications.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Mohammad Reza Jalali Sarvestani, Tayyebeh Madrakian, Abbas Afkhami
Summary: In this study, a highly sensitive electrochemical sensor was developed for the detection of ultra-trace levels of Pb2+. The sensor was modified with an in-situ electroplated bismuth film and a nanocomposite of a recently synthesized melamine based covalent organic framework and Fe3O4 nanoparticles. The combination of Fe3O4@SNW1 and the bismuth film significantly enhanced the sensitivity of the sensor towards Pb2+. The optimized sensor showed a linear response in the concentration range of 0.003-0.3 μmol L-1 with a detection limit of 0.95 nmol L-1. The sensor demonstrated good selectivity towards Pb2+ and was successfully applied for the determination of Pb2+ in different edible specimens.
Article
Chemistry, Analytical
Heleni Panagopoulou, Anastasios Economou, Christos Kokkinos
Summary: This paper introduces a 3D-printed microfluidic device for the determination of Pb(II) and Cd(II) using SIA-ASV method. The device enables online preconcentration and static solution detection, achieving low detection limits and good repeatability.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Enidale Yazie Muluneh, Menbere Leul Mekonnen, Siraye Esubalew Debebe
Summary: This study reported the use of Square Wave Anodic Stripping Voltammetry technique with a bismuth-modified glassy carbon electrode for the simultaneous determination of lead and cadmium content in paints. The results showed excellent percent recovery values and the Pb and Cd contents in these products have not been reported yet. The method is not significantly influenced by the paint matrix and can be used as an alternative analytical method for the determination of heavy metals in the paint matrix. The amount of Pb(II) and Cd(II) in the given paints are below the permissible levels based on the regulation of Ethiopia, indicating their safety for use in the country.
Article
Chemistry, Analytical
Ning Liu, Guo Zhao, Gang Liu
Summary: This study introduces a new method to detect Cd(II) and Pb(II) using feature stripping currents, which shows better anti-interference capability and detection accuracy. Models established using SVR and the partial least square algorithms demonstrate superior detection performance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Reyhan Dincer, Sukriye Ulubay Karabiberoglu, Zekerya Dursun
Summary: This study proposes a dependable approach for the selective and sensitive identification of zinc, cadmium and lead in different sample matrices using an over-oxidized poly(xylenol blue) film glassy carbon electrode coated with bismuth (Bi/PXBov.ox/GCE). The best conditions for determining these elements were found to be a 0.1 mol L-1 acetate buffer solution as supporting electrolyte (pH 4.5), -1.5 V accumulation potential, and 180 s accumulation duration. Under these conditions, the detection limits of Zn(II), Cd(II) and Pb(II) were 3.20 μg L-1, 0.21 μg L-1 and 1.98 μg L-1, respectively. Moreover, this novel, cheap and easy-to-prepare Bi/PXBov.ox/GCE was successfully used for the analysis of Zn(II), Cd(II) and Pb(II) in lipstick samples, with consistent results compared to inductively coupled plasma mass spectrometry.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Ruihua Huang, Ke Zhang, Haowei Sun, Dafeng Zhang, Jian Zhu, Shuxing Zhou, Wenyan Li, Yongtao Li, Chunqiong Wang, Xiuxiu Jia, Thomas Wagberg, Guangzhi Hu
Summary: In this study, cetyltrimethylammonium bromide and zeolitic imidazolate framework-8 (ZIF-8) were assembled via chemical co-precipitation, and high-quality carbon-based metal-free nanomaterials were synthesized using heat treatment. The internal and morphological characteristics of hexagonal Star ZIF-8 were investigated. An electrochemical sensor with a good response to Cd(II) was prepared using Star ZIF-8 nanomaterial-modified electrodes. The sensitivity of the sensor was increased by five orders of magnitude.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Shi-Hua Chen, Zong-Yin Song, Xiang-Yu Xiao, Hong-Qi Huang, Yuan-Fan Yang, Pei-Hua Li, Meng Yang, Xing-Jiu Huang
Summary: Vacancy and doping engineering were used to improve the electrocatalytic ability of nanomaterials for detecting heavy metal ions. The P-doped material showed enhanced sensitivity and selectivity towards As(III), and the vacancies provided abundant electrons to form active centers.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Laia L. Fernandez, Julio Bastos-Arrieta, Cristina Palet, Mireia Baeza
Summary: This study describes the implementation of customized graphite electrodes decorated with Hg-NPs for the electrochemical detection of Cd, Pb, and Cu. The results show improved responses towards these analytes compared to bare graphite electrodes. The analytical performance of the sensors was evaluated using square-wave anodic stripping voltammetry and showed good agreement with ICP-MS measurements.
Article
Chemistry, Analytical
Sandra Enn D. Bahinting, Analiza P. Rollon, Sergi Garcia-Segura, Vince Carlo C. Garcia, Benny Marie B. Ensano, Ralf Ruffel M. Abarca, Jurng-Jae Yee, Mark Daniel G. de Luna
Summary: This study utilized BF-UMEA for the detection of Pb(II) and Cd(II), showing its potential application in trace water quality control.
Article
Chemistry, Analytical
Gul Sirin Ustabasi, Ismail Yilmaz, Mustafa Ozcan, Ebru Cetinkaya
Summary: Pencil graphite electrode modified with MWCNT and Bi3+ showed improved sensitivity and reduced charge transfer resistance in the simultaneous analysis of Pb2+, Cd2+, and Zn2+. This modification method offers effective electroanalytical performance with low time consumption and cost.
Article
Chemistry, Analytical
Wan-Fang Lin, Wen-Ying Zhai, Yun Yan, You-Qin Liu
Summary: A rod-like poly-tyrosine membrane modified glassy carbon electrode (p-Tyr/GC) and a Bi/p-Tyr/GC composite electrode were prepared and optimized for Pb2+ detection. The Bi/p-Tyr/GC electrode showed high sensitivity and wide linear range for Pb determination in preserved duck eggs, with successful elimination of Cu2+ interference. The developed electrochemical method has high selectivity and broad application potential for heavy metal ion sensors in complex samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Engineering, Environmental
Ruihua Huang, Jiapei Lv, Jianbing Chen, Yeling Zhu, Jian Zhu, Thomas Wagberg, Guangzhi Hu
Summary: This study proposes a boron and nitrogen co-doped carbon material derived from a metal-organic framework material for the detection of heavy metal ions in food. The sensor shows good sensitivity and selectivity for Cd(II) and Pb(II), and has potential applications in complex samples.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Dionysios Soulis, Varvara Pagkali, Christos Kokkinos, Anastasios Economou
Summary: The fabrication method of ink-drawn fluidic electrochemical paper-based analytical devices (ePADs) for the determination of trace Pb(II) and Cd(II) has been reported. The ePADs are easy to fabricate, cost-effective, and suitable for on-site determination of Pb(II) and Cd(II) in environmental and food samples.
Article
Chemistry, Analytical
David J. Arnot, Timothy N. Lambert
Summary: Anodic stripping voltammetry (ASV) is used for detecting heavy metal ions, with the addition of Pb shown to improve sensitivity and precision in highly alkaline solution. The study demonstrates the importance of restricting Bi(OH)(4)(-) diffusion in alkaline battery chemistry for improved performance. ASV is utilized to determine Bi(OH)(4)(-) diffusion rates through different separators, showing consistent results with existing separator structures.
