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Domingues CE, Kordiak J, Pedroso CR, de Oliveira Stremel TR, Beber de Souza J, de Sousa Vidal CM, de Campos SX. Optimization and validation of ultrasound application with a low-temperature method to analyze organochlorine pesticides in smuggled cigarette tobacco. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:2857-2865. [PMID: 35833565 DOI: 10.1039/d2ay00544a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This work presents the optimization and validation of a method to quantify organochlorine pesticides in tobacco samples from smuggled cigarettes using ultrasound application and low-temperature extraction. The combined approach was validated for 20 organochlorine pesticides, achieving recoveries between 73% and 116%, and a relative standard deviation of less than 20%. The method minimized the matrix effect in 65% of the organochlorine pesticides. The limits of detection and quantification varied from 2 to 60 ng g-1 and 120 to 190 ng g-1, respectively. The method was applied to the analysis of 18 brands of smuggled cigarettes. The organochlorine pesticides found in the samples were cis-chlordane (89%), p,p'-dichlorodiphenyldichloroethylene (DDD) and methoxychlor (78%), endosulfan sulfate (67%), heptachlor epoxide, and endosulfan II (61%). The concentrations of the organochlorine pesticides in this study were higher than those in a similar survey on cigarettes marketed in China. The ultrasound application and low-temperature extraction may be an efficient alternative to analyzing tobacco samples since it uses only one extraction solvent, requires low-cost equipment, does not require an additional clean-up step, reduces the environmental impact through minimal waste generation, and can detect low analyte concentrations.
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Affiliation(s)
- Cinthia Eloise Domingues
- Research Group on Environmental and Sanitary Analytical Chemistry (QAAS), State University of Ponta Grossa (UEPG), Av. General Carlos Cavalcanti, 4748. 84.030-900, Ponta Grossa, PR Brazil.
| | - Januário Kordiak
- Chemistry Department, State University of Ponta Grossa (UEPG), Av. General Carlos Cavalcanti, 4748. 84.030-900, Ponta Grossa, PR Brazil
| | - Carlos R Pedroso
- Environmental and Sanitary Engineering Laboratory, State University of Centro-Oeste (UNICENTRO), PR 153, km 07, Riozinho, P.O. Box 21, 84500-000, Irati, PR Brazil
| | | | - Jeanette Beber de Souza
- Environmental and Sanitary Engineering Laboratory, State University of Centro-Oeste (UNICENTRO), PR 153, km 07, Riozinho, P.O. Box 21, 84500-000, Irati, PR Brazil
| | - Carlos M de Sousa Vidal
- Environmental and Sanitary Engineering Laboratory, State University of Centro-Oeste (UNICENTRO), PR 153, km 07, Riozinho, P.O. Box 21, 84500-000, Irati, PR Brazil
| | - Sandro X de Campos
- Research Group on Environmental and Sanitary Analytical Chemistry (QAAS), State University of Ponta Grossa (UEPG), Av. General Carlos Cavalcanti, 4748. 84.030-900, Ponta Grossa, PR Brazil.
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Yan S, Ren T, Wan Mahari WA, Feng H, Xu C, Yun F, Waiho K, Wei Y, Lam SS, Liu G. Soil carbon supplementation: Improvement of root-surrounding soil bacterial communities, sugar and starch content in tobacco (N. tabacum). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149835. [PMID: 34461468 DOI: 10.1016/j.scitotenv.2021.149835] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 08/14/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
Soil carbon supplementation is known to stimulate plant growth by improving soil fertility and plant nutrient uptake. However, the underlying process and chemical mechanism that could explain the interrelationship between soil carbon supplementation, soil micro-ecology, and the growth and quality of plant remain unclear. In this study, we investigated the influence and mechanism of soil carbon supplementation on the bacterial community, chemical cycling, mineral nutrition absorption, growth and properties of tobacco leaves. The soil carbon supplementation increased amino acid, carbohydrates, chemical energy metabolism, and bacterial richness in the soil. This led to increased content of sugar (23.75%), starch (13.25%), and chlorophyll (10.56%) in tobacco leaves. Linear discriminant analysis revealed 49 key phylotypes and significant increment of some of the Plant Growth-Promoting Rhizobacteria (PGPR) genera (Bacillus, Novosphingobium, Pseudomonas, Sphingomonas) in the rhizosphere, which can influence the tobacco growth. Partial Least Squares Path Modeling (PLS-PM) showed that soil carbon supplementation positively affected the sugar and starch contents in tobacco leaves by possibly altering the photosynthesis pathway towards increasing the aroma of the leaves, thus contributing to enhanced tobacco flavor. These findings are useful for understanding the influence of soil carbon supplementation on bacterial community for improving the yields and quality of tobacco in industrial plantation.
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Affiliation(s)
- Shen Yan
- Tobacco College of Henan Agricultural University, Zhengzhou 450002, China; Henan Biochar Technology Engineering Laboratory, 450002, China; Henan Biochar Engineering Technology Research Center, 450002, China; Staff Development Institute of China National Tobacco Corporation, Zhengzhou 450000, China
| | - Tianbao Ren
- Tobacco College of Henan Agricultural University, Zhengzhou 450002, China; Henan Biochar Technology Engineering Laboratory, 450002, China; Henan Biochar Engineering Technology Research Center, 450002, China.
| | - Wan Adibah Wan Mahari
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Huilin Feng
- Tobacco College of Henan Agricultural University, Zhengzhou 450002, China
| | - Chensheng Xu
- Nanping Branch, Fujian Tobacco Sciences Research Institute, Nanping 353000, China
| | - Fei Yun
- Tobacco College of Henan Agricultural University, Zhengzhou 450002, China; Henan Biochar Technology Engineering Laboratory, 450002, China
| | - Khor Waiho
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Centre for Chemical Biology, Universiti Sains Malaysia, Minden, 11900 Penang, Malaysia
| | - Yaowei Wei
- Tobacco College of Henan Agricultural University, Zhengzhou 450002, China; Henan Biochar Technology Engineering Laboratory, 450002, China; Henan Biochar Engineering Technology Research Center, 450002, China
| | - Su Shiung Lam
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Tobacco College of Henan Agricultural University, Zhengzhou 450002, China.
| | - Guoshun Liu
- Tobacco College of Henan Agricultural University, Zhengzhou 450002, China; Henan Biochar Technology Engineering Laboratory, 450002, China; Henan Biochar Engineering Technology Research Center, 450002, China.
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do Carmo SN, Mendes LD, Corazza G, Comelli H, Merib J, Carasek E. Determination of pesticides of different chemical classes in drinking water of the state of Santa Catarina (Brazil) using solid-phase microextraction coupled to chromatographic determinations. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:43870-43883. [PMID: 32740839 DOI: 10.1007/s11356-020-10287-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
The evaluation of the concentration of pesticides in drinking water presents a real concern. In this study, a simple and rapid method based on solid-phase microextraction (SPME) followed by gas chromatography-mass spectrometry and electron capture detectors was developed aiming at multiclass determination of 23 pesticides regulated by the Brazilian legislation. The extraction was carried out by direct immersion mode (DI-SPME) using DVB/Car/PDMS fiber coating. In order to improve the extraction efficiency, parameters such as temperature, salting-out effect, and extraction time were optimized. The method was evaluated using drinking water samples spiked with the analytes at different concentrations, and it showed good linearity in the range studied. The values obtained for limits of quantification (LOQ) were below the limits established by Brazilian regulations. Accuracy and precision of the method exhibited satisfactory results, providing relative recoveries from 70 to 123.34% at three spiked levels, and the relative standard deviations ranged from 0.53 to 24.8%. The method was applied in 20 drinking water samples from 13 cities in the State of Santa Catarina, Brazil.
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Affiliation(s)
| | - Leila Dorácio Mendes
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040900, Brazil
| | - Gabriela Corazza
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040900, Brazil
| | - Heloísa Comelli
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040900, Brazil
| | - Josias Merib
- Departamento de Farmacociências, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, 90050-170, Brazil
| | - Eduardo Carasek
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040900, Brazil.
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Li J, Zhao Y, Qin Y, Shi H. Influence of microbiota and metabolites on the quality of tobacco during fermentation. BMC Microbiol 2020; 20:356. [PMID: 33213368 PMCID: PMC7678276 DOI: 10.1186/s12866-020-02035-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 11/05/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND To explore the optimum fermentation conditions for tobacco leaves and also screen the microbiota and metabolites that are beneficial for fermentation. METHODS Tobacco leaves were fermented at 25 °C, 35 °C, and 45 °C for 2, 4, and 6 weeks, respectively. For identification of the best fermentation temperature, physicochemical properties and sensory quality of fermented tobacco were investigated. Subsequently, based on the appropriate temperature, 16 s rRNA sequencing and metabolomics analysis of tobacco were performed to monitor the change of microbes and metabolites during fermentation process (from 2 to 6 weeks). RESULTS Sensory quality analysis indicated that fermentation at 45 °C for 6 weeks represented the optimum condition. Metabolomics analysis showed that a total of 415 metabolites were annotated. The increase of fermentation period led to significant changes of metabolites. Results revealed an increase in concentration of L-phenylalanine and sphingosine as well as decreased concentration of betaine and phytosphingosine with the prolongation of fermentation period (2 to 6 weeks). Distinct changes in the microbiota were also observed with prolongation of the fermentation time. Results revealed that Pseudomonas, Pantoea, and Burkholderia were dominant bacteria in fermentation at 45 °C for 6 weeks. With the extension of the fermentation time, the abundance of Pseudomonas increased, while that of Sphingomonas and Methylobacterium decreased. Furthermore, microbiota profiles were tightly relevant to the altered metabolites, especially compounds involved in the sphingolipid metabolism. CONCLUSION Suitable fermentation conditions were 45 °C for 6 weeks; phytosphingosine and sphingosine might affect tobacco fermentation via the sphingolipid metabolism pathway. This study provides a theoretical basis for guiding tobacco fermentation and gives insights into reducing harmful substances during tobacco fermentation.
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Affiliation(s)
- Jingjing Li
- College of Tobacco Science, Henan Agricultural University, No. 95 Wenhua Road, Zhengzhou, 450002, Henan Province, China
| | - Yuanyuan Zhao
- College of Tobacco Science, Henan Agricultural University, No. 95 Wenhua Road, Zhengzhou, 450002, Henan Province, China
| | - Yanqing Qin
- Sichuan Tobacco Company, Chengdu, Sichuan, China
| | - Hongzhi Shi
- College of Tobacco Science, Henan Agricultural University, No. 95 Wenhua Road, Zhengzhou, 450002, Henan Province, China.
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A novel acrylamide modified primary-secondary amine analogue as impurities remover for determination of carbendazim and dimethyl phthalate in apples. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-018-0077-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Huang Z, Bi YJ, Sha YF, Xie WY, Wu D, Liu BZ. Separation and Analysis of Sucrose Esters in Tobacco by Online Liquid Chromatography-Gas Chromatography/Mass Spectrometry. ANAL SCI 2018; 34:887-891. [PMID: 30101882 DOI: 10.2116/analsci.18p076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 03/23/2018] [Indexed: 11/23/2022]
Abstract
In this work, a strategy of in-series combination of ultrasound-assisted extraction and online LC-GC/MS was constructed for effective separation and analysis of sucrose esters in tobacco. Sucrose esters were first extracted by ultrasound-assisted extraction with high efficiency and easyhandling. Online LC-GC/MS was then applied for sucrose ester clean-up and analysis. To better evaluate the effectiveness of this strategy, we limited our focus to five groups of sucrose ester isomers. Each group differed in mass from the next by 14 Da. The obtained coefficient of the calibration curve was 0.9986. Limit of detection (LOD) and limit of quantitation (LOQ) were 0.05 and 0.16 μg/ mL, respectively. The recovery was above 90% and the reproducibility was below 4%. This strategy was subsequently applied to the comparison of relative amounts of five groups of sucrose esters extracted from three different parts of aromatic tobacco. The satisfactory performance indicated that this strategy has great prospect for the rapid and high-throughput analysis of sucrose esters in tobacco.
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Affiliation(s)
- Zhi Huang
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Yan-Jiu Bi
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Yun-Fei Sha
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Wen-Yan Xie
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Da Wu
- Technical Center of Shanghai Tobacco Group Co. Ltd
| | - Bai-Zhan Liu
- Technical Center of Shanghai Tobacco Group Co. Ltd
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Chen J, Zhang WT, Shu Y, Ma XH, Cao XY. Detection of Organophosphorus Pesticide Residues in Leaf Lettuce and Cucumber Through Molecularly Imprinted Solid-Phase Extraction Coupled to Gas Chromatography. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0875-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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8
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David F, Devos C, Dumont E, Yang Z, Sandra P, Huertas-Pérez JF. Determination of pesticides in fatty matrices using gel permeation clean-up followed by GC-MS/MS and LC-MS/MS analysis: A comparison of low- and high-pressure gel permeation columns. Talanta 2017; 165:201-210. [DOI: 10.1016/j.talanta.2016.12.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 12/14/2016] [Accepted: 12/16/2016] [Indexed: 11/29/2022]
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9
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Cao J, Sun N, Yu W, Pang X, Lin Y, Kong F, Qiu J. Multiresidue determination of 114 multiclass pesticides in flue-cured tobacco by solid-phase extraction coupled with gas chromatography and tandem mass spectrometry. J Sep Sci 2016; 39:4629-4636. [PMID: 27753227 DOI: 10.1002/jssc.201600914] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/06/2016] [Accepted: 10/08/2016] [Indexed: 11/12/2022]
Abstract
A sensitive and robust multiresidue method for the simultaneous analysis of 114 pesticides in tobacco was developed based on solid-phase extraction coupled with gas chromatography and tandem mass spectrometry. In this strategy, tobacco samples were extracted with acetonitrile and cleaned up with a multilayer solid-phase extraction cartridge Cleanert TPT using acetonitrile/toluene (3:1) as the elution solvent. Two internal standards of different polarity were used to meet simultaneous pesticides quantification demands in the tobacco matrix. Satisfactory linearity in the range of 10-500 ng/mL was obtained for all 114 pesticides with linear regression coefficients higher than 0.994. The limit of detection and limit of quantification values were 0.02-5.27 and 0.06-17.6 ng/g, respectively. For most of the pesticides, acceptable recoveries in the range of 70-120% and repeatabilities (relative standard deviation) of <11% were achieved at spiking levels of 20, 100, and 400 ng/g. Compared with the reported multiresidue analytical method, the proposed method provided a cleaner test solution with smaller amounts of pigments, fatty acids as well as other undesirable interferences. The development and validation of the high sensitivity, high selectivity, easy automation, and high-throughput analytical method meant that it could be successfully used for the determination of pesticides in tobacco samples.
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Affiliation(s)
- Jianmin Cao
- Laboratory of Quality & Safety Risk Assessment for Tobacco, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Na Sun
- Laboratory of Quality & Safety Risk Assessment for Tobacco, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Weisong Yu
- Laboratory of Quality & Safety Risk Assessment for Tobacco, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Xueli Pang
- Laboratory of Quality & Safety Risk Assessment for Tobacco, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Yingnan Lin
- Laboratory of Quality & Safety Risk Assessment for Tobacco, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Fanyu Kong
- Laboratory of Quality & Safety Risk Assessment for Tobacco, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Jun Qiu
- Laboratory of Quality & Safety Risk Assessment for Tobacco, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
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Yang C, Lv T, Yan H, Wu G, Li H. Glyoxal-Urea-Formaldehyde Molecularly Imprinted Resin as Pipette Tip Solid-Phase Extraction Adsorbent for Selective Screening of Organochlorine Pesticides in Spinach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9650-9656. [PMID: 26449689 DOI: 10.1021/acs.jafc.5b02762] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A new kind of glyoxal-urea-formaldehyde molecularly imprinted resin (GUF-MIR) was synthesized by a glyoxal-urea-formaldehyde (GUF) gel imprinting method with 4,4'-dichlorobenzhydrol as a dummy template. The obtained GUF-MIR was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR) and applied as a selective adsorbent of miniaturized pipet tip solid-phase extraction (PT-SPE) for the separation and extraction of three organochlorine pesticides (dicofol (DCF), dichlorodiphenyl dichloroethane (DDD), and tetradifon) in spinach samples. The proposed pretreatment procedures of spinach samples involved only 5.0 mg of GUF-MIR, 0.7 mL of MeOH-H2O (1:1, v/v) (washing solvent), and 0.6 mL of cyclohexane-ethyl acetate (9:1, v/v) (elution solvent). In comparison with other adsorbents (such as silica gel, C18, NH2-silica gel, and neutral alumina (Al2O3-N)), GUF-MIR showed higher adsorption and purification capacity for DCF, DDD, and tetradifon in aqueous solution. The average recoveries at three spiked levels ranged from 89.1% to 101.9% with relative standard deviations (RSDs) ≤ 7.1% (n = 3). The presented GUF-MIR-PT-SPE method combines the advantages of molecularly imprinted polymers (MIPs), GUF, and PT-SPE and can be used in polar solutions with high affinity and selectivity to the analytes in complex samples.
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Affiliation(s)
- Chen Yang
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
| | - Tianwei Lv
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
| | - Hongyuan Yan
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
| | - Gaochan Wu
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
| | - Haonan Li
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Department of Preventive Medicine and Health Management, Hebei University and ‡Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, College of Pharmacy, Hebei University , Baoding 071002, China
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Fang W, Zhang X, Chen Y, Wan L, Huang W, Shen A, Hu J. Portable SERS-enabled Micropipettes for Microarea Sampling and Reliably Quantitative Detection of Surface Organic Residues. Anal Chem 2015; 87:9217-24. [DOI: 10.1021/acs.analchem.5b01635] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Wei Fang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine, Ministry of Education, College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xinwei Zhang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine, Ministry of Education, College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yong Chen
- Key Laboratory of Analytical
Chemistry for Biology and Medicine, Ministry of Education, College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Liang Wan
- Key Laboratory of Analytical
Chemistry for Biology and Medicine, Ministry of Education, College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Weihua Huang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine, Ministry of Education, College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Aiguo Shen
- Key Laboratory of Analytical
Chemistry for Biology and Medicine, Ministry of Education, College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Jiming Hu
- Key Laboratory of Analytical
Chemistry for Biology and Medicine, Ministry of Education, College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
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12
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Luo YB, Li X, Jiang XY, Cai BD, Zhu FP, Zhang HF, Chen ZG, Pang YQ, Feng YQ. Magnetic graphene as modified quick, easy, cheap, effective, rugged and safe adsorbent for the determination of organochlorine pesticide residues in tobacco. J Chromatogr A 2015; 1406:1-9. [PMID: 26091785 DOI: 10.1016/j.chroma.2015.05.066] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 05/23/2015] [Accepted: 05/31/2015] [Indexed: 11/30/2022]
Abstract
In this study, magnetic graphene was used as modified quick, easy, cheap, effective, rugged and safe (QuEChERS) adsorbent for the determination of organochlorine pesticide (OCPs) residues in tobacco. To achieve the optimum conditions of modified QuEChERS procedure toward target analytes, several parameters affecting the clean-up efficiency including the amount of the adsorbent and clean-up time were investigated. Under the optimized conditions, a method for the determination of 26 OCPs residues in tobacco was established by coupling the modified QuEChERS procedure to on-line gel permeation chromatography-gas chromatography-tandem mass spectrometry (on-line GPC-GC-MS(2)). The limits of detection of proposed method for 26 OCPs residues ranged from 0.01275 to 3.150ng/g. And good linearities of the proposed method were obtained with coefficients of determination (R(2)) greater than 0.9985 for all target analytes. Good reproducibility of method was obtained as intra- and inter-day precisions, the relative standard deviations were less than 11.1 and 15.0%, respectively. The apparent recoveries were in the range of 64-126% at different concentrations for real samples. Compared with the reported methods for the determination of OCPs residues in tobacco, the proposed method has the advantages of simple to operate, low cost and high clean-up ability. Finally, the method was successfully applied to the analysis of OCPs residues in real samples.
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Affiliation(s)
- Yan-Bo Luo
- China National Tobacco Quality Supervision and Test Center, No. 2 Fengyang Street, Zhengzhou High and New Technology Industries Development Zone, Zhengzhou 450001, China
| | - Xue Li
- China National Tobacco Quality Supervision and Test Center, No. 2 Fengyang Street, Zhengzhou High and New Technology Industries Development Zone, Zhengzhou 450001, China
| | - Xing-Yi Jiang
- China National Tobacco Quality Supervision and Test Center, No. 2 Fengyang Street, Zhengzhou High and New Technology Industries Development Zone, Zhengzhou 450001, China
| | - Bao-Dong Cai
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Feng-Peng Zhu
- China National Tobacco Quality Supervision and Test Center, No. 2 Fengyang Street, Zhengzhou High and New Technology Industries Development Zone, Zhengzhou 450001, China
| | - Hong-Fei Zhang
- China National Tobacco Quality Supervision and Test Center, No. 2 Fengyang Street, Zhengzhou High and New Technology Industries Development Zone, Zhengzhou 450001, China
| | - Zai-Gen Chen
- China National Tobacco Quality Supervision and Test Center, No. 2 Fengyang Street, Zhengzhou High and New Technology Industries Development Zone, Zhengzhou 450001, China
| | - Yong-Qiang Pang
- China National Tobacco Quality Supervision and Test Center, No. 2 Fengyang Street, Zhengzhou High and New Technology Industries Development Zone, Zhengzhou 450001, China.
| | - Yu-Qi Feng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
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13
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Yang M, Xi X, Wu X, Lu R, Zhou W, Zhang S, Gao H. Vortex-assisted magnetic β-cyclodextrin/attapulgite-linked ionic liquid dispersive liquid–liquid microextraction coupled with high-performance liquid chromatography for the fast determination of four fungicides in water samples. J Chromatogr A 2015; 1381:37-47. [DOI: 10.1016/j.chroma.2015.01.016] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 01/07/2015] [Accepted: 01/08/2015] [Indexed: 11/30/2022]
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