1
|
Blachnio M, Kusmierek K, Swiatkowski A, Derylo-Marczewska A. Adsorption of Phenoxyacetic Herbicides from Water on Carbonaceous and Non-Carbonaceous Adsorbents. Molecules 2023; 28:5404. [PMID: 37513275 PMCID: PMC10385827 DOI: 10.3390/molecules28145404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/07/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
The increasing consumption of phenoxyacetic acid-derived herbicides is becoming a major public health and environmental concern, posing a serious challenge to existing conventional water treatment systems. Among the various physicochemical and biological purification processes, adsorption is considered one of the most efficient and popular techniques due to its high removal efficiency, ease of operation, and cost effectiveness. This review article provides extensive literature information on the adsorption of phenoxyacetic herbicides by various adsorbents. The purpose of this article is to organize the scattered information on the currently used adsorbents for herbicide removal from the water, such as activated carbons, carbon and silica adsorbents, metal oxides, and numerous natural and industrial waste materials known as low-cost adsorbents. The adsorption capacity of these adsorbents was compared for the two most popular phenoxyacetic herbicides, 2,4-dichlorophenoxyacetic acid (2,4-D) and 2-methyl-4-chlorophenoxyacetic acid (MCPA). The application of various kinetic models and adsorption isotherms in describing the removal of these herbicides by the adsorbents was also presented and discussed. At the beginning of this review paper, the most important information on phenoxyacetic herbicides has been collected, including their classification, physicochemical properties, and occurrence in the environment.
Collapse
Affiliation(s)
- Magdalena Blachnio
- Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Krzysztof Kusmierek
- Institute of Chemistry, Military University of Technology, Gen. S. Kaliskiego St. 2, 00-908 Warszawa, Poland
| | - Andrzej Swiatkowski
- Institute of Chemistry, Military University of Technology, Gen. S. Kaliskiego St. 2, 00-908 Warszawa, Poland
| | - Anna Derylo-Marczewska
- Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| |
Collapse
|
2
|
Yi J, Han X, Zhu Q, Wu L, Wang Y, Xue J, Lai X, Zhou H. A novel metal-organic framework of Co-hemin for portable and visual colorimetric detection of 2,4-dichlorophenoxyacetic acid. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 15:63-69. [PMID: 36477090 DOI: 10.1039/d2ay01694j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
On-site quantitative analysis of 2,4-dichlorophenoxyacetic acid (2,4-D) is of significant importance for addressing increasing concerns about public health and environmental quality. Here, a novel metal-organic framework (MOF) of Co-hemin is synthesized and first used for on-site colorimetric monitoring of 2,4-D. 2,4-D as an inhibitor of alkaline phosphatase could specifically suppress the production of ascorbic acid, which restrained in situ etching of Co-hemin and further triggered the colorimetric response. In the colorimetric assay, Co-hemin displayed good oxidase-like activity without addition of H2O2, which could avoid the shortcomings of H2O2 such as toxicity and instability. The Co-hemin biosensor exhibited a relatively low detection limit of 33 ng mL-1 for 2,4-D by the UV method. Moreover, a smartphone based RGB analysis system for the sensitive detection of 2,4-D was developed, and exhibited a good linear relationship between the RGB model parameter and the concentration of 2,4-D. The operability and accuracy of the Co-hemin biosensor were confirmed by the quantitative determination of 2,4-D in real samples, such as serum and tap water. Also, the Co-hemin based colorimetric biosensor showed good selectivity and specificity. Moreover, the developed assays displayed good application in constructing complex logic gates. This work not only provided a portable and visual platform for on-site monitoring of 2,4-D, but also expanded application prospects in the field of complex biological analysis.
Collapse
Affiliation(s)
- Jintao Yi
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China.
| | - Xianqin Han
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China.
| | - Qi Zhu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China.
| | - Lingli Wu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China.
| | - Youtan Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China.
| | - Jun Xue
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China.
| | - Xiaoqi Lai
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China.
| | - Hui Zhou
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P. R. China.
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, School of Pharmacy, Guangdong Medical University, Dongguan 523808, P. R. China
| |
Collapse
|
3
|
Amini N, Maleki A, Rezaee R, Shahmoradi B, Mohammadi E, Safari M, Daraie H. Fabrication of copper oxide nanoparticles immobilized onto deoxyribonucleic acid template: application for electrochemical detection of 2,4-dichlorophenoxyacetic acid. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-022-02679-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
4
|
Electrochemical Determination of 4-Bromophenoxyacetic Acid Based on CeO2/eGr Composite. BIOSENSORS 2022; 12:bios12090760. [PMID: 36140145 PMCID: PMC9496571 DOI: 10.3390/bios12090760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/13/2022] [Accepted: 09/13/2022] [Indexed: 11/22/2022]
Abstract
The determination of plant growth regulators is of great importance for the quality monitoring of crops. In this work, 4-bromophenoxyacetic acid (4-BPA), one of the phenoxyacetic acids, was detected via the electrochemical method for the first time. A CeO2-decorated electrochemical exfoliated graphene (eGr) composite (CeO2/eGr) was constructed as the sensor for sensitive detection of 4-BPA due to the synergistic effect of the excellent catalytic active sites of CeO2 and good electron transference of the eGr. The developed CeO2/eGr sensor displayed a good linearity in a wide range from 0.3 to 150 μmol/L and the lowest detection limit of 0.06 μmol/L for 4-BPA detection. Electrochemical oxidation of 4-BPA follows a mix-controlled process on the CeO2/eGr electrode, which involves 2e in the transference process. This developed CeO2/eGr sensor has excellent repeatability with a relative standard deviation (RSD) of 2.35% in 10 continuous measurements. Moreover, the practical application of the sensor for 4-BPA detection in apple juice has recoveries in the range of 90–108%. This proposed CeO2/eGr sensor has great potential for detecting plant growth regulators in the agricultural industry.
Collapse
|
5
|
Goswami B, Mahanta D. Fe 3O 4-Polyaniline Nanocomposite for Non-enzymatic Electrochemical Detection of 2,4-Dichlorophenoxyacetic Acid. ACS OMEGA 2021; 6:17239-17246. [PMID: 34278110 PMCID: PMC8280687 DOI: 10.1021/acsomega.1c00983] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/28/2021] [Indexed: 05/13/2023]
Abstract
This study proposes the development of an electrochemical sensor based on fabrication of a glassy carbon electrode (GCE) with Fe3O4-polyaniline (Fe3O4-PANI) nanocomposite, which was further used for enzyme-less detection of 2,4-dichlorophenoxyacetic acid (2,4-D) in aqueous medium. Spectroscopic studies, microstructural studies, and elemental analysis established the formation of Fe3O4 nanoparticles with polyaniline coating. The fabricated Fe3O4-PANI-GCE was characterized by electrochemical techniques like cyclic voltammetry and electrochemical impedance spectroscopy. The electrochemical response of 2,4-D on Fe3O4-PANI-GCE was evaluated by performing cyclic voltammetry and amperometry experiments. The synergistic effect of the composite causes the superior electrochemical behavior of Fe3O4-PANI-GCE toward the detection of 2,4-D. Amperometric measurements exhibited a linear concentration range from 1.35 to 2.7 μM. The sensitivity and detection limit were evaluated from the amperometric responses, which were found to be 4.62 × 10-7 μA μM-1 cm-2 and 0.21 μM, respectively. The electrochemical sensing response could be attributed to adsorption of 2,4-D onto the Fe3O4-PANI-modified GCE (Fe3O4-PANI-GCE) surface. Fe3O4-PANI-GCE is found to be a simple, low-cost, and biocompatible non-enzymatic sensor for detection of 2,4-D in aqueous medium at ambient temperature.
Collapse
Affiliation(s)
- Bhanita Goswami
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| | - Debajyoti Mahanta
- Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
| |
Collapse
|
6
|
Adsorptive and Electrochemical Properties of Carbon Nanotubes, Activated Carbon, and Graphene Oxide with Relatively Similar Specific Surface Area. MATERIALS 2021; 14:ma14030496. [PMID: 33494204 PMCID: PMC7864508 DOI: 10.3390/ma14030496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/14/2021] [Accepted: 01/18/2021] [Indexed: 11/16/2022]
Abstract
Three carbon materials with a highly diversified structure and at the same time much less different porosity were selected for the study: single-walled carbon nanotubes, heat-treated activated carbon, and reduced graphene oxide. These materials were used for the adsorption of 2,4-D herbicide from aqueous solutions and in its electroanalytical determination. Both the detection of this type of contamination and its removal from the water are important environmental issues. It is important to identify which properties of carbon materials play a significant role. The specific surface area is the major factor. On the other hand, the presence of oxygen bound to the carbon surface in the case of contact with an organochlorine compound had a negative effect. The observed regularities concerned both adsorption and electroanalysis with the use of the carbon materials applied.
Collapse
|
7
|
Determination of 2,4-Dichlorophenoxyacetic Acid in Water and Edible Seeds Samples Using Salt-Assisted Liquid-Liquid Extraction Coupled with High-Performance Liquid Chromatography. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01903-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
8
|
Rahimi-Nasrabadi M, Ahmadi F, Beigizadeh H, Karimi MS, Sobhani-Nasab A, Joseph Y, Ehrlich H, Ganjali MR. A modified sensitive carbon paste electrode for 5-fluorouracil based using a composite of praseodymium erbium tungstate. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104654] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
9
|
Festinger N, Morawska K, Ivanovski V, Ziąbka M, Jedlińska K, Ciesielski W, Smarzewska S. Comparative Electroanalytical Studies of Graphite Flake and Multilayer Graphene Paste Electrodes. SENSORS 2020; 20:s20061684. [PMID: 32197336 PMCID: PMC7146468 DOI: 10.3390/s20061684] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 01/17/2023]
Abstract
In this paper, the fabrication, surface characterisation and electrochemical properties of graphite flake (GFPE) and multilayer graphene (MLGPE) paste electrodes are described. The Raman investigations and scanning electron microscopy were used to analyze and compare structure of both carbon materials. The electroanalytical performance of both electrodes was examined and compared on the basis of the square-wave and cyclic voltammetric behavior of acetaminophen and model redox systems. Results of those studies revealed that GFPE has a larger electroactive surface area and better conductive properties, whilst MLGPE demonstrate better analytical characteristic in case of acetaminophen (AC) determination. AC determination was developed using square wave voltammetry (SWV) and square wave stripping voltammetry (SWSV). For both working electrodes, the process of accumulation enabled us to obtain an extended linear range and to lower the detection limit. In pharmaceutical formulations, AC was determined with good recovery.
Collapse
Affiliation(s)
- Natalia Festinger
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, 91-403 Lodz, Poland
- Correspondence: ; Tel.: +48-42-6355480
| | - Kamila Morawska
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, 91-403 Lodz, Poland
| | - Vladimir Ivanovski
- Institute of Chemistry, Faculty of Natural Sciences and Mathematics, University of Ss. Cyril and Methodius in Skopje, 1000 Skopje, Macedonia
| | - Magdalena Ziąbka
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30-059 Cracow, Poland
| | - Katarzyna Jedlińska
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30-059 Cracow, Poland
| | - Witold Ciesielski
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, 91-403 Lodz, Poland
| | - Sylwia Smarzewska
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, 91-403 Lodz, Poland
| |
Collapse
|
10
|
Xiang H, Cai Q, Li Y, Zhang Z, Cao L, Li K, Yang H. Sensors Applied for the Detection of Pesticides and Heavy Metals in Freshwaters. JOURNAL OF SENSORS 2020; 2020:1-22. [DOI: 10.1155/2020/8503491] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Water is essential for every life living on the planet. However, we are facing a more serious situation such as water pollution since the industrial revolution. Fortunately, many efforts have been done to alleviate/restore water quality in freshwaters. Numerous sensors have been developed to monitor the dynamic change of water quality for ecological, early warning, and protection reasons. In the present review, we briefly introduced the pollution status of two major pollutants, i.e., pesticides and heavy metals, in freshwaters worldwide. Then, we collected data on the sensors applied to detect the two categories of pollutants in freshwaters. Special focuses were given on the sensitivity of sensors indicated by the limit of detection (LOD), sensor types, and applied waterbodies. Our results showed that most of the sensors can be applied for stream and river water. The average LOD was72.53±12.69 ng/ml (n=180) for all pesticides, which is significantly higher than that for heavy metals (65.36±47.51 ng/ml,n=117). However, the LODs of a considerable part of pesticides and heavy metal sensors were higher than the criterion maximum concentration for aquatic life or the maximum contaminant limit concentration for drinking water. For pesticide sensors, the average LODs did not differ among insecticides (63.83±17.42 ng/ml,n=87), herbicides (98.06±23.39 ng/ml,n=71), and fungicides (24.60±14.41 ng/ml,n=22). The LODs that differed among sensor types with biosensors had the highest sensitivity, while electrochemical optical and biooptical sensors showed the lowest sensitivity. The sensitivity of heavy metal sensors varied among heavy metals and sensor types. Most of the sensors were targeted on lead, cadmium, mercury, and copper using electrochemical methods. These results imply that future development of pesticides and heavy metal sensors should (1) enhance the sensitivity to meet the requirements for the protection of aquatic ecosystems and human health and (2) cover more diverse pesticides and heavy metals especially those toxic pollutants that are widely used and frequently been detected in freshwaters (e.g., glyphosate, fungicides, zinc, chromium, and arsenic).
Collapse
Affiliation(s)
- Hongyong Xiang
- Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin 130024, China
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan 650500, China
| | - Qinghua Cai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Yuan Li
- Northwest Land and Resources Research Center, Shaanxi Normal Northwest University, China
| | - Zhenxing Zhang
- Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin 130024, China
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, Northeast Normal University, Changchun, Jilin 130024, China
| | - Lina Cao
- Ecology and Environment Department of Jilin Province, Changchun, Jilin 130024, China
| | - Kun Li
- Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, Heilongjiang University, Harbin 150080, China
| | - Haijun Yang
- Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin 130024, China
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan 650500, China
- School of Life Science and Geology, Yili Normal University, Yili, Xinjiang 835000, China
| |
Collapse
|
11
|
Mohammadnia M, Heydari R, Sohrabi MR. Determination of 2,4-Dichlorophenoxyacetic acid in food and water samples using a modified graphene oxide sorbent and high-performance liquid chromatography. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 55:293-300. [PMID: 31746259 DOI: 10.1080/03601234.2019.1692613] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In the present work, dispersive micro-solid phase extraction (D-μ-SPE) method using magnetic graphene oxide tert-butylamine (GO/Fe3O4/TBA) nanocomposite, as an efficient sorbent, was applied for determining 2,4-dichlorophenoxyacetic acid (2,4-D) in water and food samples. Detection was carried out using high-performance liquid chromatography (HPLC) instrument. Influential parameters of D-μ-SPE such as sorbent and its amount, elution solvent and its volume, adsorption and desorption times and pH of sample solution were investigated and optimized. Under the optimized conditions, limit of detection and quantitation values were 0.007 and 0.02 μg/mL, respectively. Recovery data for several real samples were obtained within the range of 88.0-94.0% with a relative standard deviation (RSD) less than 7.5%. The proposed method was successfully applied to quantitative determination of 2,4-D in several vegetables and water samples.
Collapse
Affiliation(s)
- Maryam Mohammadnia
- Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Rouhollah Heydari
- Research Center for Environmental Determinants of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mahmoud Reza Sohrabi
- Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran
| |
Collapse
|
12
|
Yudan Zhu, Hang Y, Huang X, Song C. Sensitive Determination of Semicarbazide in Flour by Differential Pulse Voltammetry. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819090120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
13
|
Deryło-Marczewska A, Skrzypczyńska K, Kuśmierek K, Świątkowski A, Zienkiewicz-Strzałka M. The adsorptive properties of oxidized activated carbons and their applications as carbon paste electrode modifiers. ADSORPTION 2019. [DOI: 10.1007/s10450-019-00016-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
14
|
Zahra Heidari, Mahboubeh Masrournia. A Novel Modified Carbon Paste Electrode for the Determination of Chromium(III) in Water. JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s1061934818080105] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Mohammadizadeh N, Mohammadi SZ, Kaykhaii M. Carbon Paste Electrode Modified with ZrO2 Nanoparticles and Ionic Liquid for Sensing of Dopamine in the Presence of Uric Acid. JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s1061934818070134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
16
|
Electroanalytical determination of eugenol in clove oil by voltammetry of immobilized microdroplets. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-3933-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
17
|
|
18
|
Prabhakaran DC, Riotte J, Sivry Y, Subramanian S. Electroanalytical Detection of Cr(VI) and Cr(III) Ions Using a Novel Microbial Sensor. ELECTROANAL 2017. [DOI: 10.1002/elan.201600458] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Divyasree C. Prabhakaran
- Department of Materials Engineering; Indian Institute of Science; Bangalore-560012 Karnataka India
- Indo-French Cell for Water Sciences; Indian Institute of Science; Bangalore-560012 Karnataka India
| | - Jean Riotte
- Indo-French Cell for Water Sciences; Indian Institute of Science; Bangalore-560012 Karnataka India
| | - Yann Sivry
- Institut de Physique du Globe de Paris &; Université Paris Diderot Paris 7; UMR CNRS 7154, 1, Rue Jussieu 75238 Paris cedex 05 France
| | - Sankaran Subramanian
- Department of Materials Engineering; Indian Institute of Science; Bangalore-560012 Karnataka India
- Indo-French Cell for Water Sciences; Indian Institute of Science; Bangalore-560012 Karnataka India
| |
Collapse
|
19
|
The efficacy of the ZnO:α-Fe2O3 composites modified carbon paste electrode for the sensitive electrochemical detection of loperamide: A detailed investigation. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.11.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
20
|
First Electroanalytical Studies of Profluralin with Square Wave Voltammetry Using Glassy Carbon Electrode. ELECTROANAL 2016. [DOI: 10.1002/elan.201600562] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
21
|
Abstract
The aim of the research was the use of square wave adsorptive stripping voltammetry (SWAdSV) in conjunction with a hanging mercury drop electrode (HMDE) for the determination of nitrothal-isopropyl. It was found that optimal SW technique parameters were frequency, 200 Hz; amplitude, 50 mV; and step potential, 5 mV. Accumulation time and potential were studied to select the optimal conditions in adsorptive stripping voltammetry: 45 s at 0.0 V, respectively. The calibration curve (SWSV) was linear in the nitrothal-isopropyl concentration range from 2.0 × 10−7 to 2.0 × 10−6 mol L−1 with detection limit of 3.46 × 10−8 mol L−1. The repeatability of the method was determined at a nitrothal-isopropyl concentration level equal to 6.0 × 10−7 mol L−1 and expressed as RSD = 5.5% (n=6). The proposed method was successfully validated by studying the recovery of nitrothal-isopropyl in spiked environmental samples.
Collapse
|