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Masci M, Caproni R, Nevigato T. Chromatographic Methods for the Determination of Glyphosate in Cereals Together with a Discussion of Its Occurrence, Accumulation, Fate, Degradation, and Regulatory Status. Methods Protoc 2024; 7:38. [PMID: 38804332 PMCID: PMC11130892 DOI: 10.3390/mps7030038] [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: 03/14/2024] [Revised: 04/19/2024] [Accepted: 04/29/2024] [Indexed: 05/29/2024] Open
Abstract
The European Union's recent decision to renew the authorization for the use of glyphosate until 15 December 2033 has stimulated scientific discussion all around the world regarding its toxicity or otherwise for humans. Glyphosate is a chemical of which millions of tons have been used in the last 50 years worldwide to dry out weeds in cultivated fields and greenhouses and on roadsides. Concern has been raised in many areas about its possible presence in the food chain and its consequent adverse effects on health. Both aspects that argue in favor of toxicity and those that instead may indicate limited toxicity of glyphosate are discussed here. The widespread debate that has been generated requires further investigations and field measurements to understand glyphosate's fate once dispersed in the environment and its concentration in the food chain. Hence, there is a need for validated analytical methods that are available to analysts in the field. In the present review, methods for the analytical determination of glyphosate and its main metabolite, AMPA, are discussed, with a specific focus on chromatographic techniques applied to cereal products. The experimental procedures are explained in detail, including the cleanup, derivatization, and instrumental conditions, to give the laboratories involved enough information to proceed with the implementation of this line of analysis. The prevalent chromatographic methods used are LC-MS/MS, GC-MS/SIM, and GC-MS/MS, but sufficient indications are also given to those laboratories that wish to use the better performing high-resolution MS or the simpler HPLC-FLD, HPLC-UV, GC-NPD, and GC-FPD techniques for screening purposes. The concentrations of glyphosate from the literature measured in wheat, corn, barley, rye, oats, soybean, and cereal-based foods are reported, together with its regulatory status in various parts of the world and its accumulation mechanism. As for its accumulation in cereals, the available data show that glyphosate tends to accumulate more in wholemeal flours than in refined ones, that its concentration in the product strictly depends on the treatment period (the closer it is to the time of harvesting, the higher the concentration), and that in cold climates, the herbicide tends to persist in the soil for a long time.
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Affiliation(s)
- Maurizio Masci
- Council for Agricultural Research and Economics (CREA), Research Centre for Food and Nutrition, via Ardeatina 546, 00178 Rome, Italy (T.N.)
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Jesús F, Rosa García A, Stecconi T, Cutillas V, Rodríguez Fernández-Alba A. Determination of highly polar anionic pesticides in beehive products by hydrophilic interaction liquid chromatography coupled to mass spectrometry. Anal Bioanal Chem 2024; 416:675-688. [PMID: 37749278 DOI: 10.1007/s00216-023-04946-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 09/27/2023]
Abstract
The analysis of highly polar pesticides is challenging due to their unique physicochemical properties, requiring specialized chromatographic techniques for their accurate and sensitive detection. Furthermore, the high level of co-extracted polar matrix components that can co-elute with the analytes can interfere with the analysis. Consequently, there is lack of pesticide monitoring data, as the European Food Safety Authority has pointed out. This article explores the overcoming of such difficulties in the analysis of these compounds. Analytical methodologies for the extraction, clean-up, and direct determination of 11 highly polar anionic pesticides, including glyphosate, glufosinate, ethephon, fosetyl-aluminium, and their related metabolites in complex food matrices such as honey and pollen by hydrophilic interaction liquid chromatography coupled to tandem mass spectrometry were successfully developed and validated. Solid-phase extraction and micro-solid-phase extraction employing strong anion exchange (SAX) cartridges were implemented for clean-up. The automation and miniaturization of SAX clean-up for these compounds were achieved for the first time. For method validation, SANTE/11312/2021 guideline was followed. Recoveries were between 70 and 120%, with RSDs below 20%. Limits of quantitation ranged from 0.005 to 0.020 mg kg-1. Linearity was evaluated from 0.002 to 0.200 mg kg-1. Matrix effects were assessed, showing medium to low signal suppression for most compounds. AMPA and glufosinate presented the highest signal suppression, but it was reduced after SAX clean-up. Analysis of real honey and pollen samples revealed the occurrence of the studied compounds in beehive products and showed the applicability of the validated methodologies for routine control of these complex samples.
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Affiliation(s)
- Florencia Jesús
- Department of Chemistry and Physics, Agrifood Campus of International Excellence (ceiA3), University of Almeria, Ctra. Sacramento s/n, La Cañada de San Urbano, 04120, Almeria, Spain
| | - Adrián Rosa García
- Department of Chemistry and Physics, Agrifood Campus of International Excellence (ceiA3), University of Almeria, Ctra. Sacramento s/n, La Cañada de San Urbano, 04120, Almeria, Spain
| | - Tommaso Stecconi
- Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032, Camerino, Italy
| | - Víctor Cutillas
- Department of Chemistry and Physics, Agrifood Campus of International Excellence (ceiA3), University of Almeria, Ctra. Sacramento s/n, La Cañada de San Urbano, 04120, Almeria, Spain
| | - Amadeo Rodríguez Fernández-Alba
- Department of Chemistry and Physics, Agrifood Campus of International Excellence (ceiA3), University of Almeria, Ctra. Sacramento s/n, La Cañada de San Urbano, 04120, Almeria, Spain.
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3
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González-Moscoso M, Meza-Figueroa D, Martínez-Villegas NV, Pedroza-Montero MR. GLYPHOSATE IMPACT on human health and the environment: Sustainable alternatives to replace it in Mexico. CHEMOSPHERE 2023; 340:139810. [PMID: 37598951 DOI: 10.1016/j.chemosphere.2023.139810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/22/2023]
Abstract
Glyphosate is a broad-spectrum, non-selective herbicide used to control weeds and protect agricultural crops, and it is classified as potentially carcinogenic by the International Agency for Research on Cancer. In Mexico, the use of pesticides is a common practice, including glyphosate. However, on December 31st, 2020, the Mexican government decreed the prohibition of this herbicide as of January 2024. In this review, we investigate the association between glyphosate and cancer risk and found that most of the studies focused using animals showing negative effects such as genotoxicity, cytotoxicity and neurotoxicity, some studies used cancer cell lines showing proliferative effects due to glyphosate exposure. To our knowledge, in Mexico, there are no scientific reports on the association of glyphosate with any type of cancer. In addition, we reviewed the toxicological effects of the herbicide glyphosate, and the specific case of the current situation of the use and environmental damage of this herbicide in Mexico. We found that few studies have been published on glyphosate, and that the largest number of publications are from the International Agency for Research on Cancer classification to date. Additionally, we provide data on glyphosate stimulation at low doses as a biostimulant in crops and analytical monitoring techniques for the detection of glyphosates in different matrices. Finally, we have tried to summarize the actions of the Mexican government to seek sustainable alternatives and replace the use of glyphosate, to obtain food free of this herbicide and take care of the health of the population and the environment.
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Affiliation(s)
- Magín González-Moscoso
- Departamento de Nanotecnología, Universidad Politécnica de Chiapas (UPChiapas), Carretera Tuxtla Gutierrez.-Portillo Zaragoza Km 21+500, Col. Las Brisas, Suchiapa, 29150, Chiapas, Mexico.
| | - Diana Meza-Figueroa
- Departamento de Geología, Universidad de Sonora, Rosales y Encinas, Hermosillo, 83000, Sonora, Mexico
| | | | - Martín Rafael Pedroza-Montero
- Departamento de Investigación en Física, Universidad de Sonora, Rosales y Encinas, Hermosillo, 83000, Sonora, Mexico
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4
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Cai K, Gao W, Li X, Lin Y, Li D, Quan W, Zhao R, Ren X. Development and Application of Portable Reflectometric Spectroscopy Combined with Solid-Phase Extraction for Determination of Potassium in Flue-Cured Tobacco Leaves. ACS OMEGA 2023; 8:20730-20738. [PMID: 37332809 PMCID: PMC10269270 DOI: 10.1021/acsomega.3c01326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/24/2023] [Indexed: 06/20/2023]
Abstract
Potassium (K) plays important roles in the energy and substance conversion of tobacco metabolism and is also regarded as one of the important indicators of tobacco quality evaluation. However, the K quantitative analytical method shows poor performance in terms of being easy-to-use, cost-effective, and portable. Here, we developed a rapid and simple method for the determination of K content in flue-cured tobacco leaves, including water extraction with 100 °C heating, purification with solid-phase extraction (SPE), and analysis with portable reflectometric spectroscopy based on K test strips. The method development consisted of optimization of the extraction and test strip reaction conditions, screening of SPE sorbent materials, and evaluation of the matrix effect. Under the optimum conditions, good linearity was observed in 0.20-0.90 mg/mL with a correlation coefficient >0.999. The extraction recoveries were found to be in the range of 98.0-99.5% with a repeatability and reproducibility of 1.15-1.98% and 2.04-3.26%, respectively. The sample measured range was calculated to be 0.76-3.68% K. Excellent agreement was found in accuracy between the developed reflectometric spectroscopy method and the standard method. The developed method was applied to analyze the K content in different cultivars, and the content varied greatly among the samples with lowest and highest contents for Y28 and Guiyan 5 cultivars, respectively. This study can provide a reliable approach for K analysis, which may become available on-site in a quick on-farm test.
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Affiliation(s)
- Kai Cai
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Weichang Gao
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Xiang Li
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Yechun Lin
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Decheng Li
- State
Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil
Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Wenxuan Quan
- Key
Laboratory for Information System of Mountainous Area and Protection
of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang 550025, China
| | - Ruijuan Zhao
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Xueliang Ren
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
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5
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Wan CQ, Pang YH, Feng YW, Shen XF. A ratio fluorescence sensor based on rhodamine B embedded metal-organic framework for glyphosate detection in agri-food products. Food Chem 2022; 394:133446. [PMID: 35749871 DOI: 10.1016/j.foodchem.2022.133446] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 11/22/2022]
Abstract
Glyphosate, a broad-spectrum and high-efficiency herbicide, could accumulate in the human body through the consumption of agri-food products. Herein, a ratio fluorescence sensor based on rhodamine B-embedded amino-functionalized iron-based metal-organic framework (MOF, NH2-MIL-88(Fe)@RhB) bonded with Cu2+ was developed for rapid detection of glyphosate. The synthesized NH2-MIL-88(Fe) was a biconical prism and had a cavity for the embedding of RhB as a reference compound. In the presence of Cu2+, Lewis interactions with NH2-MIL-88(Fe)@RhB cause the fluorescence signal to be turned off. When glyphosate was added, the signal was turned on due to chelation with Cu2+ and hydrogen bonding interactions with NH2-MIL-88(Fe)@RhB. Under optimal conditions, the developed sensor exhibited a linear range of 0.60-45 μmol L-1 with a response time of less than 1 min. The sensor was applied in the analysis of agri-food products (tea, soybean, wheat, cucumber), with recoveries between 97.93% and 109.06%, indicating its promising application in agri-food safety.
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Affiliation(s)
- Chao-Qun Wan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yue-Hong Pang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | | | - Xiao-Fang Shen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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6
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Wang M, Phillips TD. Inclusion of Montmorillonite Clays in Environmental Barrier Formulations to Reduce Skin Exposure to Water-Soluble Chemicals from Polluted Water. ACS APPLIED MATERIALS & INTERFACES 2022; 14:10.1021/acsami.2c04676. [PMID: 35536196 PMCID: PMC9646935 DOI: 10.1021/acsami.2c04676] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Dermal exposures to environmental chemicals can significantly affect the morphology and integrity of skin structure, leading to enhanced and deeper penetration of toxic chemicals. This problem can be magnified during disasters where hazardous water-soluble chemicals are readily mobilized and redistributed in the environment, threatening the health of vulnerable populations at the impacted sites. To address this issue, barrier emulsion formulations (EVB) have been developed consisting of materials that are generally recognized as safe, with the inclusion of medical grade carbon or calcium and sodium montmorillonite clays (CM and SM). In this study, the adsorption efficacy of five highly toxic and commonly occurring contaminants of concern, including important hydrophilic pesticides (glyphosate, acrolein, and paraquat) and per- and polyfluoroalkyl substances were characterized. EVB showed properties such as high stability, spreadability, low rupture strength, and neutral pH that were suitable for topical application on the skin. The in vitro adsorption results indicated that EVB and EVB-SM were effective, economically feasible, and favorable barrier formulations for hazardous chemical adsorption, as supported by high binding percentage, low desorption rates for an extended period of time, and high binding affinity. A pseudo-second-order kinetic model was best fitted for the adsorption process and the Freundlich model fit the adsorption isotherms with negative enthalpy values indicating spontaneous reactions that involve physisorption. The study, with varying temperatures and pH, showed that the adsorption reaction was exothermic and persistent. The results indicated that EVB and EVB-SM can be used as effective barriers to block dermal contact from water-soluble toxic pollutants during disasters.
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Affiliation(s)
- Meichen Wang
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas 77843, United States
| | - Timothy D Phillips
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas 77843, United States
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Determination of Aminophosphonate Herbicides in Glutamate Loaded Spice Mix by LC-IDMS and Method Extension to Other Food Matrices. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-022-02248-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AbstractThe accumulation of organophosphorus type herbicides has been observed worldwide in the environment (i.e. soil, water), together with their appearance in foods of plant origin. This paper reports a new liquid chromatography–isotope dilution–tandem mass spectrometric method (LC-IDMS) for the analysis of glufosinate (GLUF), glyphosate (GLY) and its main metabolite, aminomethylphosphonic acid (AMPA), in challenging food samples. Sample preparation is based on aqueous extraction with ethylenediaminetetraacetic acid solution, followed by solid-phase extraction (SPE) on mixed-mode cation exchange cartridges to remove matrix constituents before derivatization with 9-fluorenylmethoxycarbonyl chloride (FMOC-Cl). Derivatized samples were cleaned up on hydrophilic modified polymeric SPE cartridge. This two-step SPE supported sample preparation approach, and the LC-IDMS separation carried out in negative ionization mode resulted in fit-for-purpose recovery (81–118%) and precision (4–18%) in the validation of glutamate loaded spice mix, mushroom, maize and cherry samples. Amino acid content influencing FMOC derivatization efficiency was estimated with a HILIC-MS/MS setup. Multiple reaction monitoring (MRM) was assisted with high-resolution (QTOF) accurate mass data on the FMOC-derivatized GLUF, GLY and AMPA standards. The limit of quantification (LOQ) was 0.005 mg/kg for all the three analytes. The method was successfully applied on quality control samples (oat and arugula) with fit-for-purpose accuracy (99–120%) and on other nineteen real samples, where GLY and AMPA were detected in the range between 0.005 and 0.069 mg/kg.
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Compensate for or Minimize Matrix Effects? Strategies for Overcoming Matrix Effects in Liquid Chromatography-Mass Spectrometry Technique: A Tutorial Review. Molecules 2020; 25:molecules25133047. [PMID: 32635301 PMCID: PMC7412464 DOI: 10.3390/molecules25133047] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 11/16/2022] Open
Abstract
In recent decades, mass spectrometry techniques, particularly when combined with separation methods such as high-performance liquid chromatography, have become increasingly important in pharmaceutical, bio-analytical, environmental, and food science applications because they afford high selectivity and sensitivity. However, mass spectrometry has limitations due to the matrix effects (ME), which can be particularly marked in complex mixes, when the analyte co-elutes together with other molecules, altering analysis results quantitatively. This may be detrimental during method validation, negatively affecting reproducibility, linearity, selectivity, accuracy, and sensitivity. Starting from literature and own experience, this review intends to provide a simple guideline for selecting the best operative conditions to overcome matrix effects in LC-MS techniques, to obtain the best result in the shortest time. The proposed methodology can be of benefit in different sectors, such as pharmaceutical, bio-analytical, environmental, and food sciences. Depending on the required sensitivity, analysts may minimize or compensate for ME. When sensitivity is crucial, analysis must try to minimize ME by adjusting MS parameters, chromatographic conditions, or optimizing clean-up. On the contrary, to compensate for ME analysts should have recourse to calibration approaches depending on the availability of blank matrix. When blank matrices are available, calibration can occur through isotope labeled internal standards and matrix matched calibration standards; conversely, when blank matrices are not available, calibration can be performed through isotope labeled internal standards, background subtraction, or surrogate matrices. In any case, an adjusting of MS parameters, chromatographic conditions, or a clean-up are necessary.
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9
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Manzano-Sánchez L, Martínez-Martínez JA, Domínguez I, Martínez Vidal JL, Frenich AG, Romero-González R. Development and Application of a Novel Pluri-Residue Method to Determine Polar Pesticides in Fruits and Vegetables through Liquid Chromatography High Resolution Mass Spectrometry. Foods 2020; 9:foods9050553. [PMID: 32370015 PMCID: PMC7278595 DOI: 10.3390/foods9050553] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 11/16/2022] Open
Abstract
Nowadays, highly polar pesticides are not included in multiresidue methods due to their physico-chemical characteristics and therefore, specific analytical methodologies are required for their analysis. Laboratories are still looking for a pluri-residue method that encompasses the largest number of polar pesticides. The aim of this work was the simultaneous determination of ethephon, 2-hydroxyethylphosphonic acid (HEPA), fosetyl aluminum, glyphosate, aminomethylphosphonic acid (AMPA), N-acetyl-glyphosate and N-acetyl-AMPA in tomatoes, oranges, aubergines and grapes. For that purpose, an ultra high performance liquid chromatography (UHPLC) coupled to a high resolution single mass spectrometer Orbitrap-MS were used. Different stationary phases were evaluated for chromatographic separation, and among them, the stationary phase Torus DEA provided the best separation of the selected compounds. The QuPPe method was used for the extraction of the analytes, but slight modifications were needed depending on the matrix. The developed method was validated, observing matrix effect in all matrices. Intra- and inter-day precision were estimated, and relative standard deviation were lower than 19%. Recoveries were satisfactory, and mean values ranged from 70% to 110%. Limits of quantification were between 25 and 100 µg kg-1. Finally, the analytical method was applied to different fruits and vegetables (oranges, tomatoes, aubergines and grapes).
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10
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Tiago JPF, Sicupira LC, Barros RE, de Pinho GP, Silvério FO. Simultaneous and direct determination of glyphosate and AMPA in water samples from the hydroponic cultivation of eucalyptus seedlings using HPLC-ICP-MS/MS. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2020; 55:558-565. [PMID: 32107966 DOI: 10.1080/03601234.2020.1733369] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Glyphosate is the main herbicide currently used in the world due to wide applicability and efficiency in controlling weeds in many crops. However, its overuse may lead to undesirable impacts on the environment and to human health in the long run. This present study aimed to optimize and validate solid phase extraction (SPE) using an anionic resin for the simultaneous and direct determination of glyphosate and aminomethylphosphonic acid (AMPA) in water samples using high-performance liquid chromatography combined with inductively coupled plasma with triple quadrupole mass spectrometer (HPLC-ICP-MS/MS). The results showed that recovery percentage and relative standard deviation were 103.9 ± 7.9 and 99.40 ± 9.9% for glyphosate and AMPA, respectively. The validation certified that the method was precise, accurate, linear, and selective, with a limit of quantification of 1.09 and 0.29 μg L-1 for glyphosate and AMPA, respectively. The optimized methodology reached the concentration factor of 250 times and was successfully applied to analyze water samples from hydroponic cultivation of the eucalyptus seedlings. The results showed that the exudation process occurs at glyphosate doses starting from 2 L ha-1.
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Affiliation(s)
- João P F Tiago
- Institute of Agricultural Sciences, Universidade Federal de Minas Gerais, Montes Claros, Brazil
| | - Lázaro C Sicupira
- Institute of Engineering, Science and Technology, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Janaúba, Minas Gerais, Brazil
| | - Rodrigo E Barros
- Institute of Agricultural Sciences, Universidade Federal de Minas Gerais, Montes Claros, Brazil
| | - Gevany P de Pinho
- Institute of Agricultural Sciences, Universidade Federal de Minas Gerais, Montes Claros, Brazil
| | - Flaviano O Silvério
- Institute of Agricultural Sciences, Universidade Federal de Minas Gerais, Montes Claros, Brazil
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Giang LT, Thien TLT, Yen DH. Studying method of underivatized determination glyphosate, glufosinate and their metabolites in drinking water. VIETNAM JOURNAL OF CHEMISTRY 2020. [DOI: 10.1002/vjch.2019000132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Le Truong Giang
- Institute of Chemistry, Vietnam Academy of Science and Technology; Hanoi 10000 Viet Nam
| | - Tran Lam Thanh Thien
- Institute of Chemistry, Vietnam Academy of Science and Technology; Hanoi 10000 Viet Nam
- Vietnam National University Ho Chi Minh City, University of Science; Ho Chi Minh City 70000 Viet Nam
| | - Dao Hai Yen
- Institute of Chemistry, Vietnam Academy of Science and Technology; Hanoi 10000 Viet Nam
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12
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Nørskov NP, Jensen SK, Sørensen MT. Robust and highly sensitive micro liquid chromatography-tandem mass spectrometry method for analyses of polar pesticides (glyphosate, aminomethylphosfonic acid, N-acetyl glyphosate and N-acetyl aminomethylphosfonic acid) in multiple biological matrices. J Chromatogr A 2019; 1605:360343. [PMID: 31307794 DOI: 10.1016/j.chroma.2019.06.064] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/28/2019] [Accepted: 06/29/2019] [Indexed: 11/24/2022]
Abstract
Glyphosate is the most used herbicide in agriculture. To monitor glyphosate exposure, analytical methods have to fulfill requirements with regard to sensitivity, reproducibility, ease of handling/high-throughput and applicability to multiple biological matrices. Furthermore, the methods have to include the degradation product of glyphosate, aminomethylphosfonic acid (AMPA) and preferably metabolites of glyphosate and AMPA, N-acetyl AMPA and N-acetyl glyphosate. Majority of the published methods for glyphosate and AMPA require derivatization to be able to achieve high sensitivity. In this work, we present highly sensitive microLC-MS/MS method for simultaneous quantification of glyphosate, AMPA, N-acetyl AMPA and N-acetyl glyphosate in multiple biological matrices without derivatization. The combination of simple sample clean-up procedures for simultaneous handling of 96 sample and short chromatographic run of only 3.4 min, meets the requirements for high-throughput methods. Simple mobile phase of water containing formic and medronic acids and isocratic run provided robust chromatographic separation on hypercarb column. The use of micro-flow system decreased the background noise, increasing the sensitivity. Achieved Low Limits of Quantification (LOQs) for liquid samples (plasma/serum/urine) were 0.00005 mg L-1 and 0.0001 mg kg-1 for solid samples (grain and soybean based feed/stomach/gizzard/intestinal content), which is more than 100 time more sensitive compared to QuPPe-Method. The method was validated in representative matrices with minimum of five fortification levels, six measurements per spiked concentration and three batches. All the samples were spiked with corresponding internal standards for all four analytes before sample clean-up procedures, ensuring high accuracy and precision. Recoveries for plasma/serum ranged between 86-108%, urine 93-120%, feed 91-115% and stomach/gizzard/intestinal content 92-110% with precision below 20%. The method's applicability was tested on 2000 samples measured during one year period.
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Affiliation(s)
- Natalja P Nørskov
- Department of Animal Science, Aarhus University, Blichers Alle 20, DK-8830, Denmark.
| | - Søren Krogh Jensen
- Department of Animal Science, Aarhus University, Blichers Alle 20, DK-8830, Denmark
| | - Martin Tang Sørensen
- Department of Animal Science, Aarhus University, Blichers Alle 20, DK-8830, Denmark
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13
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Gotti R, Fiori J, Bosi S, Dinelli G. Field-amplified sample injection and sweeping micellar electrokinetic chromatography in analysis of glyphosate and aminomethylphosphonic acid in wheat. J Chromatogr A 2019; 1601:357-364. [PMID: 31104848 DOI: 10.1016/j.chroma.2019.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/23/2019] [Accepted: 05/10/2019] [Indexed: 01/01/2023]
Abstract
Glyphosate, a widely used herbicide, has been classified as probably carcinogenic to humans by the International Agency for Research on Cancer (IARC). In the present study a method based on Field-Amplified Sample Injection and Sweeping Micellar Electrokinetic Chromatography (FASI sweep-MEKC) has been developed and validated for determination of glyphosate and its microbial metabolite aminomethylphosphonic acid (AMPA) in wheat flour. The method involved a preliminary solid phase extraction for cleanup of the aqueous extracts from wheat flour, based sequentially on C18 and strong anion exchange cartridges, followed by derivatization using 9-fluorenylmethylchloroformate. Optimization of sample cleanup and derivatization procedure was carried out by a HPLC-UV method, whereas FASI sweep-MEKC was applied for achieving the sensitivity necessary for analysis of real samples. To this regard, optimum conditions involved the use of an extended path fused-silica capillary (80 cm total length, 50 μm, i.d.) filled with a high concentration buffer (sodium phosphate 100 mM, pH 2.2). Electrokinetic sampling was carried out at -10 kV with injection time of 700 s and the separation of the loaded analytes was performed under MEKC conditions using sodium phosphate buffer 50 mM at pH 2.2, supplemented with sodium dodecyl sulfate, 100 mM. The method was validated for linearity, precision, accuracy and sensitivity, showing that using conventional UV detection (210 nm) the achieved limit of quantitation (LOQ) values for both the analytes were widely lower than those set by Authorities. In particular, LOQ for glyphosate and AMPA were found to be 5 and 2.5 ng/mL, respectively, corresponding to 0.1 and 0.05 mg/kg, in wheat flour. The method, applied to commercially available real samples (wheat flour from different manufacturers) and to an experimental sample obtained by cv. Svevo wheat, can be considered as a convenient alternative to the existing approaches in analysis of complex matrices.
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Affiliation(s)
- Roberto Gotti
- Department of Pharmacy and Biotechnology, University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy.
| | - Jessica Fiori
- Department of Chemistry "Giacomo Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Sara Bosi
- Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
| | - Giovanni Dinelli
- Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
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Chiarello M, Jiménez-Medina ML, Marín Saéz J, Moura S, Garrido Frenich A, Romero-González R. Fast analysis of glufosinate, glyphosate and its main metabolite, aminomethylphosphonic acid, in edible oils, by liquid chromatographycoupled with electrospray tandem mass spectrometry. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:1376-1384. [PMID: 31287383 DOI: 10.1080/19440049.2019.1631493] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 06/05/2019] [Indexed: 10/26/2022]
Abstract
A method has been developed for the rapid, specific, accurate, precise and sensitive determination of glufosinate, glyphosate and its major metabolite, aminomethylphosphonic acid, in edible oils, by liquid chromatography coupled to tandem mass spectrometry. Oils were extracted with acidified water (1% formic acid), and the extracts were directly injected into an LC using a Hypercarb column as the stationary phase. The analytes were eluted by a mobile phase of methanol and water containing 1% acetic acid, and they were ionised by electrospray ionisation in negative ion mode. The method was validated and limits of quantification ranged from 5 μg kg-1 (aminomethylphosphonic acid) to 10 μg kg-1 (glyphosate and glufosinate). Three concentrations (10, 50 and 100 μg kg-1) were selected to perform recovery studies. Mean recoveries ranged from 81.4% to 119.4%. Intra and inter-day precision were lower than 19%. Different edible oils were analysed, and no residues of the studied herbicides were detected above limits of quantification.
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Affiliation(s)
- Marilda Chiarello
- Research Group ''Analytical Chemistry of Contaminants'', Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
- LBIOP-Laboratory of Biotechnology of Natural and Synthetics Products, Technology Department, Biotechnology Institute, University of Caxais do Sul , Caxais do Sul , Brazil
| | - María Luisa Jiménez-Medina
- Research Group ''Analytical Chemistry of Contaminants'', Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
| | - Jesús Marín Saéz
- Research Group ''Analytical Chemistry of Contaminants'', Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
| | - Sidnei Moura
- LBIOP-Laboratory of Biotechnology of Natural and Synthetics Products, Technology Department, Biotechnology Institute, University of Caxais do Sul , Caxais do Sul , Brazil
| | - Antonia Garrido Frenich
- Research Group ''Analytical Chemistry of Contaminants'', Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
| | - Roberto Romero-González
- Research Group ''Analytical Chemistry of Contaminants'', Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), University of Almería, Agrifood Campus of International Excellence, ceiA3 , Almería , Spain
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15
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Simultaneous determination of cartap and its metabolite in tea using hydrophilic interaction chromatography tandem mass spectrometry and the combination of dispersive solid phase extraction and solid phase extraction. J Chromatogr A 2019; 1600:148-157. [DOI: 10.1016/j.chroma.2019.04.034] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/09/2019] [Accepted: 04/11/2019] [Indexed: 02/07/2023]
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16
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Rigobello-Masini M, Pereira EAO, Abate G, Masini JC. Solid-Phase Extraction of Glyphosate in the Analyses of Environmental, Plant, and Food Samples. Chromatographia 2019. [DOI: 10.1007/s10337-019-03748-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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17
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Chen D, Miao H, Zhao Y, Wu Y. A simple liquid chromatography-high resolution mass spectrometry method for the determination of glyphosate and aminomethylphosphonic acid in human urine using cold-induced phase separation and hydrophilic pipette tip solid-phase extraction. J Chromatogr A 2019; 1587:73-78. [PMID: 30471790 DOI: 10.1016/j.chroma.2018.11.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 11/07/2018] [Accepted: 11/16/2018] [Indexed: 11/20/2022]
Abstract
Recently, the phenomenon of acute poisoning events caused by glyphosate (GLY) had frequently occurred all over the world. The present work reported a simple liquid chromatography-high resolution mass spectrometry (LC-HRMS) method for direct determination of GLY and its metabolite aminomethylphosphonic acid (AMPA) in human urine by combining cold-induced phase separation (CIPS) with hydrophilic pipette tip solid-phase extraction (PTSPE). First, a urine sample was mixed with acetonitrile at a 80% concentration to precipitate proteins. After centrifugation, the mixture was performed a CIPS at -20 °C to enrich GLY and AMPA (six-fold) in the lower water phase which was further performed PTSPE procedure. PTSPE as a miniaturized procedure of SPE, combined with a manual accu-jet® Pro Pipette Controller, was used to extract GLY and AMPA, in which a new type of hydrophilic adsorbent (HILIC powder) based on amide-modified silica was selected as the adsorption of GLY and AMPA. The key factors including the type and the amount of adsorbent, the loading extraction solution, the type and volume of eluent, and the number of aspirating/dispensing cycles were investigated in detail. Meanwhile, the selectivity and sensitivity of GLY and AMPA analysis were improved by the use of LC-HRMS based on targeted single ion monitoring (tSIM) mode without tedious derivatization. This method made a full use of the advantages of these techniques by combining efficient enrichment, effective extraction and selective separation in a simple way. Finally, a comprehensive validation of the method was rigorously executed and the results indicated that the validated method afforded desired linearity, precision, accuracy, and sensitivity.
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Affiliation(s)
- Dawei Chen
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China
| | - Hong Miao
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China
| | - Yunfeng Zhao
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China.
| | - Yongning Wu
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China.
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18
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Cahuantzi‐Muñoz SL, González‐Fuentes MA, Ortiz‐Frade LA, Torres E, Ţălu Ş, Trejo G, Méndez‐Albores A. Electrochemical Biosensor for Sensitive Quantification of Glyphosate in Maize Kernels. ELECTROANAL 2019. [DOI: 10.1002/elan.201800759] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Selene L. Cahuantzi‐Muñoz
- Centro de Química-ICUAP Benemérita Universidad Autónoma de PueblaCiudad Universitaria Puebla 72530 Puebla México
| | | | - Luis A. Ortiz‐Frade
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ). Parque Tecnológico Sanfandila, Pedro Escobedo, A.P. 064, C.P. 76703 Querétaro México
| | - Eduardo Torres
- Centro de Química-ICUAP Benemérita Universidad Autónoma de PueblaCiudad Universitaria Puebla 72530 Puebla México
| | - Ştefan Ţălu
- Technical University of Cluj-NapocaThe Directorate of Research, Development and Innovation Management (DMCDI) Constantin Daicoviciu Street, No. 15 Cluj-Napoca 400020, Cluj county Romania
| | - G. Trejo
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ). Parque Tecnológico Sanfandila, Pedro Escobedo, A.P. 064, C.P. 76703 Querétaro México
| | - Alia Méndez‐Albores
- Centro de Química-ICUAP Benemérita Universidad Autónoma de PueblaCiudad Universitaria Puebla 72530 Puebla México
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19
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Oliveira PC, Maximiano EM, Oliveira PA, Camargo JS, Fiorucci AR, Arruda GJ. Direct electrochemical detection of glyphosate at carbon paste electrode and its determination in samples of milk, orange juice, and agricultural formulation. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2018; 53:817-823. [PMID: 30325268 DOI: 10.1080/03601234.2018.1505081] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 05/17/2018] [Indexed: 06/08/2023]
Abstract
This paper describes a simple, inexpensive, highly sensitive, selective, and efficient electrochemical method to determine glyphosate (GLY) in samples of milk, orange juice, and agricultural formulation. The oxidation reaction on the electrode surface was electrochemically characterised by cyclic voltammetry (CV) and square wave voltammetry (SWV). The investigation of GLY at carbon paste electrode revealed a non-reversible oxidation peak at +0.95 V versus Ag/AgCl, which was used for electrochemical detection of GLY. The operating parameters (pH, frequency, step potential, and amplitude) were optimised in relation to the peak current intensity, and a calibration curve was set up in a concentration range of 4.40 × 10-8-2.80 × 10-6 mol L-1, with a detection limit of 2 × 10-9 mol L-1. After calibration curve was plotted, the developed procedure was applied to determine GLY in previously contaminated samples: milk and orange juice, and in a commercial formulation, obtaining recovery values between 98.31% and 103.75%. These results show that the proposed method can be used for GLY quantification in different samples with high sensitivity, specificity, stability, and reproducibility.
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Affiliation(s)
- Pâmela C Oliveira
- a Research Center for Natural Resources, State University of Mato Grosso do Sul , Dourados , MS , Brazil
| | - Elizabete M Maximiano
- a Research Center for Natural Resources, State University of Mato Grosso do Sul , Dourados , MS , Brazil
| | - Poliane A Oliveira
- a Research Center for Natural Resources, State University of Mato Grosso do Sul , Dourados , MS , Brazil
| | - Junior S Camargo
- a Research Center for Natural Resources, State University of Mato Grosso do Sul , Dourados , MS , Brazil
| | - Antonio R Fiorucci
- a Research Center for Natural Resources, State University of Mato Grosso do Sul , Dourados , MS , Brazil
| | - Gilberto J Arruda
- a Research Center for Natural Resources, State University of Mato Grosso do Sul , Dourados , MS , Brazil
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20
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Jansons M, Pugajeva I, Bartkevičs V. Occurrence of glyphosate in beer from the Latvian market. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2018; 35:1767-1775. [PMID: 29718772 DOI: 10.1080/19440049.2018.1469051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/10/2018] [Indexed: 10/17/2022]
Abstract
A sensitive LC-MS/MS method for the determination of glyphosate in beer has been developed, validated, and applied to analyse 100 beer samples from 24 different producers and distributors in Latvia. The selected samples represented most beer brands and varieties sold in local supermarkets. Different procedures for sample preparation and chromatographic separation were compared. The final version of the method consisted of solid phase extraction, chromatographic separation on aminopropyl stationary phase, and detection using tandem mass spectrometry. The concentration of glyphosate in beer varied from below the LOD of 0.2 μg kg-1 up to 150 μg kg-1, higher than previously reported. Significantly higher (p < 0.01) content of glyphosate was observed in beers that did not have the country of production disclosed on the label and were sold in local supermarkets by distributors from Latvia (1.8 μg kg-1 median concentration in locally produced beer, 6.7 μg kg-1 in beer of undisclosed origin).
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Affiliation(s)
- Mārtiņš Jansons
- a University of Latvia , Faculty of Chemistry , Riga , Latvia
- b Institute of Food Safety , Animal Health and Environment 'BIOR' , Riga , Latvia
| | - Iveta Pugajeva
- b Institute of Food Safety , Animal Health and Environment 'BIOR' , Riga , Latvia
| | - Vadims Bartkevičs
- b Institute of Food Safety , Animal Health and Environment 'BIOR' , Riga , Latvia
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21
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Multicommutated Flow System for the Determination of Glyphosate Based on Its Quenching Effect on CdTe-Quantum Dots Fluorescence. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1192-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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22
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Abstract
Summary
A straightforward LC-ESI-MS/MS method was developed and validated for the detection and quantitation of the herbicide glyphosate (GLY) and its metabolite aminomethyl phosphonic acid (AMPA) in honeybees. The method was validated, fulfilling the SANTE 11945/2015 guideline criteria, demonstrating acceptable mean recoveries at LOQ and 10×LOQ varying from 75-87% for both compounds. LOQ was determined at 0.2 and 0.5 μg/g bee body weight (bw) for GLY and AMPA respectively. Analysis of 14 honeybee samples displayed only one positive sample, containing GLY marginally above LOQ and traces of AMPA.
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23
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Clean-up and matrix effect in LC-MS/MS analysis of food of plant origin for high polar herbicides. Food Chem 2017; 230:524-531. [DOI: 10.1016/j.foodchem.2017.03.091] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/16/2017] [Accepted: 03/14/2017] [Indexed: 11/17/2022]
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24
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Padilla-Alonso DJ, Garza-Tapia M, Chávez-Montes A, González-Horta A, Waksman de Torres NH, Castro-Ríos R. New temperature-assisted ionic liquid-based dispersive liquid–liquid microextraction method for the determination of glyphosate and aminomethylphosphonic acid in water samples. J LIQ CHROMATOGR R T 2017. [DOI: 10.1080/10826076.2017.1295057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Daniela J. Padilla-Alonso
- Departamento de Química Analítica, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
| | - Marsela Garza-Tapia
- Departamento de Química Analítica, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
| | - Abelardo Chávez-Montes
- Departamento de Química, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Azucena González-Horta
- Departamento de Química, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Noemí H. Waksman de Torres
- Departamento de Química Analítica, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
| | - Rocío Castro-Ríos
- Departamento de Química Analítica, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
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A simplified LC-MS/MS method for rapid determination of cycloserine in small-volume human plasma using protein precipitation coupled with dilution techniques to overcome matrix effects and its application to a pharmacokinetic study. Anal Bioanal Chem 2017; 409:3025-3032. [PMID: 28224247 DOI: 10.1007/s00216-017-0249-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 01/21/2017] [Accepted: 02/06/2017] [Indexed: 01/24/2023]
Abstract
Matrix effects have been a major concern when developing LC-MS/MS methods for quantitative bioanalysis of cycloserine. Sample handling procedures including solid phase extraction or derivatization have been reported previously by researchers to overcome matrix effects of cycloserine. In the present study, the possibility of reducing matrix effects of cycloserine using protein precipitation coupled with dilution techniques was investigated. Plasma samples were pretreated by protein precipitation with methanol followed by a 40-fold dilution with methanol-water (50:50, v/v). The analyte and the internal standard (mildronate) were chromatographed on a Shim-pack XR-ODS (100 mm × 2.0 mm, 2.2 μm) column using methanol-0.01% formic acid (70:30, v/v) as mobile phase and detected by multiple reaction monitoring mode via positive electrospray ionization. The total run time was only 2 min per sample. The suppression of cycloserine response was reduced with the matrix effects ranging between 80.5 and 87.9%. A lower limit of quantification (LLOQ) of 0.300 μg/mL was achieved using only 10 μL of plasma. The intra- and inter-day precisions were less than 4.8% and the accuracy ranged from -2.6 to 6.6%. The method was successfully applied to a pharmacokinetic study of cycloserine in 30 healthy Chinese male subjects after oral administration of a single dose of cycloserine at 250, 500 and 750 mg under fasting conditions. The newly developed method is simpler, faster, cost-effective, and more robust than previously reported LC-MS/MS methods.
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26
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Qu Z, Bai X, Zhang T, Yang Z. Ultrasound-assisted extraction and solid-phase extraction for the simultaneous determination of five amide herbicides in fish samples by gas chromatography with electron capture detection. J Sep Sci 2017; 40:1142-1149. [DOI: 10.1002/jssc.201601092] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/09/2016] [Accepted: 12/15/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Zhipeng Qu
- College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan P.R. China
| | - Xiuzhi Bai
- College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan P.R. China
| | - Ting Zhang
- College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan P.R. China
| | - Zhaoguang Yang
- College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan P.R. China
- Center for Environment and Water Resources; Central South University; Changsha Hunan P.R. China
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27
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Detection of trans-fatty acids by high performance liquid chromatography coupled with in-tube solid-phase microextraction using hydrophobic polymeric monolith. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1040:214-221. [DOI: 10.1016/j.jchromb.2016.11.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 10/31/2016] [Accepted: 11/09/2016] [Indexed: 11/23/2022]
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28
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MAO Z, WANG X, DI X, LIU Y, ZANG Y, MA D, LIU Y, DI X. Quantitative Detection of Ambroxol in Human Plasma Using HPLC-APCI-MS/MS: Application to a Pharmacokinetic Study. ANAL SCI 2017; 33:1099-1103. [DOI: 10.2116/analsci.33.1099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Zhengsheng MAO
- Laboratory of Drug Metabolism and Pharmacokinetics, Shenyang Pharmaceutical University
| | - Xin WANG
- Laboratory of Drug Metabolism and Pharmacokinetics, Shenyang Pharmaceutical University
| | - Xin DI
- Laboratory of Drug Metabolism and Pharmacokinetics, Shenyang Pharmaceutical University
| | - Yangdan LIU
- Laboratory of Drug Metabolism and Pharmacokinetics, Shenyang Pharmaceutical University
| | - Yanan ZANG
- Laboratory of Drug Metabolism and Pharmacokinetics, Shenyang Pharmaceutical University
| | - Dongke MA
- Laboratory of Drug Metabolism and Pharmacokinetics, Shenyang Pharmaceutical University
| | - Youping LIU
- Laboratory of Drug Metabolism and Pharmacokinetics, Shenyang Pharmaceutical University
| | - Xin DI
- Laboratory of Drug Metabolism and Pharmacokinetics, Shenyang Pharmaceutical University
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