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Wei L, Gan W, Cai M, Cai H, Zhang G, Cheng X. Development of a novel HPLC-CDCL method utilizing nitrogen-doped carbon dots for sensitive and selective detection of dithiocarbamate pesticides in tea. Food Chem 2024; 458:140237. [PMID: 38996488 DOI: 10.1016/j.foodchem.2024.140237] [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: 04/18/2024] [Revised: 06/11/2024] [Accepted: 06/24/2024] [Indexed: 07/14/2024]
Abstract
In this study, S-methyl derivatives of dithiocarbamates (DTCs) were shown to significantly enhance chemiluminescence (CL) between Ce(IV) and efficient and environmentally friendly nitrogen-doped carbon dots (NCDs). Based on the elucidation of the CL mechanisms, an innovative approach involving high-performance liquid chromatography coupled with N-CDs and CL detection (HPLC-CDCL) was proposed. The developed method was successfully applied to the highly sensitive detection of three DTC fungicides (dimethyl dithiocarbamate, ethylene bisdithiocarbamate, and propylene bisdithiocarbamate) in tea. The recovery of the established method ranged 70.51-116.45%, with relative standard deviations (RSD) of <9.40%. The limit of detection (S/N = 3) was as low as 0.19 μg/L (as CS2), which is superior to the previous methods and comparable to UPLC-tandem mass spectrometry (MS/MS). Moreover, the proposed approach does not require solid-phase extraction and offers excellent selectivity. This study proposes a novel method for the detection of DTCs in the food safety and environmental fields.
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Affiliation(s)
- Lijun Wei
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China; Jiangxi Province Key Laboratory of Preventive Medicine, School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang 330006, PR China.
| | - Weimin Gan
- Jiangxi Province Key Laboratory of Preventive Medicine, School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang 330006, PR China
| | - Mengdie Cai
- Jiangxi Province Key Laboratory of Preventive Medicine, School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang 330006, PR China
| | - Hongping Cai
- Jiangxi Province Key Laboratory of Preventive Medicine, School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang 330006, PR China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China.
| | - Xianglei Cheng
- Jiangxi Province Key Laboratory of Preventive Medicine, School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang 330006, PR China.
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Asghar M, Yaqoob M, Munawar N, Nabi A. Determination of thiram residues in fresh water using flow injection diperiodatonickelate(IV)-quinine chemiluminescence detection. LUMINESCENCE 2022; 37:2041-2049. [PMID: 36150887 DOI: 10.1002/bio.4389] [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: 06/17/2022] [Revised: 08/17/2022] [Accepted: 09/17/2022] [Indexed: 12/14/2022]
Abstract
This study developed a simple flow injection (FI) method based on diperiodatonickelate(IV)-sulfuric acid reaction using chemiluminescence (CL) detection for the determination of thiram (THI) fungicide in fresh water using quinine as the sensitizer. The possible mechanism of the CL reaction was described using UV-Vis. absorption and CL spectra. Experimental variables were optimized by applying a univariate approach, and a linear calibration curve was obtained in the range of 1.0 × 10-3 -2.0 mg L-1 (R2 = 0.9994, n = 9) with a limit of detection of 5.0 × 10-4 mg L-1 (S/N = 3) and an injection throughput of 200 h-1 . This approach was successfully applied to determine THI in fresh water by using solid-phase extraction and achieved a good recovery rate of 94%-110% with a relative standard deviation of 1.9%-3.7% (n = 4). The results obtained were compared with the reported FI-CL and high-performance liquid chromatography-ultraviolet methods, and the three methods did not differ significantly at the 95% confidence limit.
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Affiliation(s)
- Muhammad Asghar
- Department of Chemistry, University of Balochistan, Quetta, Pakistan
| | - Mohammad Yaqoob
- Department of Chemistry, University of Balochistan, Quetta, Pakistan
| | - Nusrat Munawar
- Department of Chemistry, Sardar Bahadur Khan Women University, Quetta, Pakistan
| | - Abdul Nabi
- Department of Chemistry, University of Balochistan, Quetta, Pakistan
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Zhang Y, Na X, Shao Y, Liu J, Tian D, Mao X. Determination of Arsenic in Soil by Ultrasonic Assisted Slurry Sampling Hydride Generation (HG) in-Situ Dielectric Barrier Discharge Trap (DBD)-Optical Emission Spectrometry (OES). ANAL LETT 2021. [DOI: 10.1080/00032719.2021.2004156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yaru Zhang
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun, China
- Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, and Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Xing Na
- Beijing Ability Technique Company, Limited, Beijing, China
| | - Yunbin Shao
- Beijing Ability Technique Company, Limited, Beijing, China
| | - Jixin Liu
- Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, and Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing, China
- Beijing Ability Technique Company, Limited, Beijing, China
| | - Di Tian
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun, China
| | - Xuefei Mao
- Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, and Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing, China
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Zhang Y, Liu J, Mao X, Chen G, Tian D. Review of miniaturized and portable optical emission spectrometry based on microplasma for elemental analysis. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116437] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang Y, Mao X, Tian D, Liu J, Li C. Trace arsenic analysis in edible seaweeds by miniature in situ dielectric barrier discharge microplasma optical emission spectrometry based on gas phase enrichment. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4079-4089. [PMID: 34554154 DOI: 10.1039/d1ay01034d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this work, a novel method using low-cost miniaturized hydride generation optical emission spectrometry equipment coupled with an in situ dielectric barrier discharge trap (HG-in situ DBD trap-OES) was established for the determination of As in edible seaweed samples. An improved peak volume algorithm, where the start time point and end time point of the spectrum at each concentration are determined according to the unified judgment criteria, was first proposed to extend the linear range from 1-100 μg L-1 to 1-200 μg L-1, and increase the sensitivity by about 30%. In addition, a modification was done on the DBD implementation, providing an enhancement of sensitivity by a factor of about 4 for As. All in all the detection limit (LOD) was improved from 0.5 μg L-1 to 0.2 μg L-1. By applying the method to seaweed samples, a method detection limit (MD) of 0.25 mg kg-1 was achieved, with less than 3% relative standard deviations (RSDs). The calibration linearity reached R2 > 0.990 in the 1.25-250 mg kg-1 range. Results obtained by the proposed method showed good agreement with that of certified reference materials (CRMs), and spiked recoveries were 103% to 114%, indicating favorable accuracy. The proposed method is attractive in terms of instrumentation size (0.6 m × 0.5 m × 0.3 m), power consumption (<60 W), manufacturing cost, and gas consumption (300 measurements for 4 L compressed Ar/H2 gas), and therefore more advantageous than conventional atomic spectrometric methods.
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Affiliation(s)
- Yaru Zhang
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130023, China.
- Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Xuefei Mao
- Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Di Tian
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130023, China.
| | - Jixin Liu
- Institute of Quality Standard and Testing Technology for Agro-products, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
- Beijing Ability Technique Company, Limited, Beijing 100081, China
| | - Chunsheng Li
- College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130023, China.
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Multicolor visual screening of total dithiocarbamate pesticides in foods based on sulfydryl-mediated growth of gold nanobipyramids. Anal Chim Acta 2020; 1139:59-67. [PMID: 33190710 DOI: 10.1016/j.aca.2020.09.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/05/2020] [Accepted: 09/14/2020] [Indexed: 11/23/2022]
Abstract
Dithiocarbamates (DTCs) pesticides were extensively used as fungicides in a variety of crops during their growth, storage and shipment. The DTCs residue in foods will seriously harm human health. In this study, a novel multicolor colorimetric sensor was developed for visual screening of total DTCs (total of ziram, thiram and zineb) based on sulfhydryl-mediated growth of gold nanobipyramids (AuNBPs). We demonstrated that DTCs can absorb on AuNBPs seed's surface via the formation of Au-S bonds and thus impede the 8-hydroxyquinoline (8-HQ)-promoted AuNBPs growth, which generates DTCs concentration-corresponding color changes. The developed sensor has vivid color changes, short analysis time, higher sensitivity and excellent specificity. It can be used to detect as low as 50 nM of total DTCs by bare eye observation and 17-18 nM of total DTCs by UV-visible spectrometry. By using the multicolor sensor, we have successfully screened total DTCs in apple and black tea by bare eye observation, and detected total DTCs in apple and black tea by UV-visible spectrometry with a recovery of 90%-104% and a relative standard deviation (RSD, n = 5) < 5%. The results obtained with our method consisted well with those obtained with high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS), verifying that our method had good accuracy and reliability. Especially, the visual detection limit of our method is much lower than the maximum residue limit of total DTCs in vegetable and fruits. All above features make our sensor a promising method for rapid on-site screening of total DTCs in vegetable and fruits by only bare eye observation.
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Alves Sá da Silva V, Silva Santos A, Ferreira TL, Codognoto L, Agostini Valle EM. Electrochemical Evaluation of Pollutants in the Environment: Interaction Between the Metal Ions Zn(II) and Cu(II) with the Fungicide Thiram in Billings Dam. ELECTROANAL 2020. [DOI: 10.1002/elan.201900438] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Vitor Alves Sá da Silva
- Universidade Federal de São Paulo –Instituto de Ciências Ambientais, Químicas e Farmacêuticas – Campus Diadema Professor Arthur Riedel Street, 275 09972-270 Diadema São Paulo Brazil
| | - Aymara Silva Santos
- Universidade Federal de São Paulo –Instituto de Ciências Ambientais, Químicas e Farmacêuticas – Campus Diadema Professor Arthur Riedel Street, 275 09972-270 Diadema São Paulo Brazil
| | - Tiago Luiz Ferreira
- Universidade Federal de São Paulo –Instituto de Ciências Ambientais, Químicas e Farmacêuticas – Campus Diadema Professor Arthur Riedel Street, 275 09972-270 Diadema São Paulo Brazil
| | - Lúcia Codognoto
- Universidade Federal de São Paulo –Instituto de Ciências Ambientais, Químicas e Farmacêuticas – Campus Diadema Professor Arthur Riedel Street, 275 09972-270 Diadema São Paulo Brazil
| | - Eliana Maíra Agostini Valle
- Universidade Federal de São Paulo –Instituto de Ciências Ambientais, Químicas e Farmacêuticas – Campus Diadema Professor Arthur Riedel Street, 275 09972-270 Diadema São Paulo Brazil
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Yu X, Zhong Y, Sun Y, Chen Y. Controllable Preparation of Plasmonic Gold Nanostars for Enhanced Photothermal and SERS Effects. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-0049-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Chu S, Wang H, Ling X, Yu S, Yang L, Jiang C. A Portable Smartphone Platform Using a Ratiometric Fluorescent Paper Strip for Visual Quantitative Sensing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:12962-12971. [PMID: 32100526 DOI: 10.1021/acsami.9b20458] [Citation(s) in RCA: 134] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Instrument-free, portable, and direct read-out mini-devices have wider application prospects in various fields, especially for real-time/on-site sensing. Herein, combined with a paper strip, a smartphone sensing platform integrated with a UV lamp and dark cavity by 3D-printing technology has been developed for the rapid, sensitive, instrument-free, and visual quantitative analysis in real-time/on-site conditions. The platform proved the feasibility for visual quantitative detection of pesticide via a fluorescence "on-off-on" response with a single dual-emissive ratiometric paper strip. Red-emitting CdTe quantum dots (rQDs) were embedded into the silica nanoparticles (SiO2 NPs) as an internal reference, while blue-emitting carbon dots (bCDs) as a signal report unit were covalently linked to the outer surface of SiO2 NPs. The blue fluorescence could be quenched by gold nanoparticles (Au NPs) and then recovered with pesticide. The red (R), green (G), and blue (B) channel values of the generated images were determined by a color recognizer application (APP) installed in the smartphone, and the R/B values could be used for pesticide quantification with a sensitive detection limit (LOD) of 59 nM. The smartphone sensing platform based on 3D printing might provide a general strategy for visual quantitative detection in a variety of fields including environments, diagnosis, and safety monitoring.
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Affiliation(s)
- Suyun Chu
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Haiqian Wang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Xiao Ling
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Shaoming Yu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Liang Yang
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
- State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - Changlong Jiang
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China
- State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Hefei, Anhui 230031, China
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