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Chowdhury NJ, Akbor MA, Nahar A, Ali Shaikh MA. Techniques for quantification of organochlorine pesticides from a validated method by using gas chromatography-electron capture detector. Heliyon 2024; 10:e34548. [PMID: 39114063 PMCID: PMC11305318 DOI: 10.1016/j.heliyon.2024.e34548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 07/11/2024] [Accepted: 07/11/2024] [Indexed: 08/10/2024] Open
Abstract
Organochlorine pesticides (OCPs) are persistent organic compounds found in aquatic environments worldwide. A well-validated and well-established analytical method is crucial for detecting OCPs in the environment. In this study, an analytical method for quantifying OCPs in water was developed and evaluated. Here, the range of linearity, reproducibility, uncertainty, specificity, method detection limits (MDL), and special emphasis on detection and quantitation limits were assessed. Recovery studies were performed to measure the accuracy and precision of the method. This method exhibited excellent linearity in the range of 2.5-20 μg/L for all compounds. As none of the targeted compounds was detected in the chromatograms of the blank sample with no baseline noise, the limits of detection (LOD) and limits of quantification (LOQ) were determined using the linear regression method, external calibration curve slope, and laboratory fortified blank-based detection. All compounds showed different LOD and LOQ values, depending on the approach used. In particular, endosulfan sulfate, methoxychlor, endrin ketone, H. epoxide, heptachlor, and 4,4'-DDT exhibited high detection limits. The recovery percentage of the 15 compounds at 5 μg/L spiked concentration was between 50 and 150 %, which is consistent with the accuracy of the APHA method. Except for endosulfan sulfate, the relative standard deviations of all other compounds were below 20 %, indicating good precision. This method has also been applied to real water samples. This validation technique is reliable, sensitive, simple, rapid, easy to comprehend, and reproducible. The application of this method in the real water samples was also conducted. Only α-BHC and γ-Chlordane were detected in the water sample.
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Affiliation(s)
- Nushrat Jahan Chowdhury
- Institute of National Analytical Research and Services (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Md. Ahedul Akbor
- Institute of National Analytical Research and Services (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Aynun Nahar
- Institute of National Analytical Research and Services (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
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2
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Bao M, Bai J, Wang Y, Zhu S, Liu Y, Wen T, Zhang J, Ma SC, Guo Y. Plasma-Excited Nebulizer Gas-Assisted Electrospray Ionization: Enhancing the Sensitivity of Pesticide in Mass Spectrometry. Anal Chem 2023; 95:14842-14852. [PMID: 37779463 DOI: 10.1021/acs.analchem.3c01502] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Liquid chromatography-mass spectrometry (LC-MS) is widely used in the detection of pesticide residues. However, the detection sensitivity of low-polarity pesticides by commonly used electrospray ionization may be severely suppressed, which greatly affects the limit of detection and repeatability. Herein, a plasma-excited nebulizer gas-assisted electrospray ionization (PENG-ESI) device has been developed. By introducing the discharge plasma formed by Tesla coil into the electrospray nebulizer gas channel, the sensitivity of low-polarity pesticides was significantly increased while maintaining sensitivity to polar pesticides. Under the optimized conditions, the limit of detection for S-bioallethrin was achieved at the level of 100 pg/g with good linearity (R2 > 0.99) and precision (RSD ≤ 4.61%). The matrix effect of a series of spiked matrix samples is less than 13.1%. Finally, different pyrethroid pesticide residues were successfully analyzed without separation, highlighting that the technology has potential application prospects in food quality control, environmental monitoring, and other fields.
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Affiliation(s)
- Mingmai Bao
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jiahui Bai
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Ying Wang
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 102629, China
| | - Suzhen Zhu
- Analysis and Testing Center, Institute of Zhejiang University, Quzhou, 324000, China
| | - Yingchao Liu
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Tianlun Wen
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jing Zhang
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Shuang-Cheng Ma
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 102629, China
| | - Yinlong Guo
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
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3
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Munjanja BK, Nomngongo PN, Mketo N. Organochlorine pesticides in vegetable oils: An overview of occurrence, toxicity, and chromatographic determination in the past twenty-two years (2000-2022). Crit Rev Food Sci Nutr 2023:1-17. [PMID: 37335094 DOI: 10.1080/10408398.2023.2222010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Organochlorine pesticides (OCPs) are used globally to control pests in the food industry. However, some have been banned due to their toxicity. Although they have been banned, OCPs are still discharged into the environment and persist for long periods of time. Therefore, this review focused on the occurrence, toxicity, and chromatographic determination of OCPs in vegetable oils over the last 22 years (2000-2022) (111 references).Literature search shows that OCPs kill pests by destroying endocrine, teratogenic, neuroendocrine, immune, and reproductive systems. However, only five studies investigated the fate of OCPs in vegetable oils and the outcome revealed that some of the steps involved during oil processing introduce more OCPs. Moreover, direct chromatographic determination of OCPs was mostly performed using online LC-GC methods fitted with oven transfer adsorption desorption interface. While indirect chromatographic determination was favored by QuEChERS extraction technique, gas chromatography frequently coupled to electron capture detection (ECD), gas chromatography in selective ion monitoring mode (SIM), and gas chromatography tandem mass spectrometry (GC-MS/MS) were the most common techniques used for detection. However, the greatest challenge still faced by analytical chemists is to obtain clean extracts with acceptable extraction recoveries (70-120%). Hence, more research is still required to develop greener and selective extraction methods toward OCPs, thus improving extraction recoveries. Moreover, advanced techniques like gas chromatography high resolution mass spectrometry (GC-HRMS) must also be explored. OCPs prevalence in vegetable oils varied greatly in various countries, and concentrations of up to 1500 µg/kg were reported. Additionally, the percentage of positive samples ranged from 1.1 to 97.5% for endosulfan sulfate.
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Affiliation(s)
- Basil K Munjanja
- Department of Chemistry, College of Science, Engineering and Technology, Florida Science Campus, University of South Africa, Roodepoort, Johannesburg, South Africa
| | - Philiswa N Nomngongo
- Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Nomvano Mketo
- Department of Chemistry, College of Science, Engineering and Technology, Florida Science Campus, University of South Africa, Roodepoort, Johannesburg, South Africa
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4
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Yue X, Zou X, Sun R, Wang J. Simultaneous Determination of Fungicides in Wood and Bamboo Food-Contact Materials by High-Performance Liquid Chromatography–Tandem Mass Spectrometry (HPLC–MS/MS). ANAL LETT 2023. [DOI: 10.1080/00032719.2023.2171427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Xiaoqing Yue
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Xiaoshuang Zou
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Ruiqi Sun
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jun Wang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, China
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5
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Wang W, Yang F, Yang Y, Wang YY, Liu B. Rational Synthesis of a Stable Rod MOF for Ultrasensitive Detection of Nitenpyram and Nitrofurazone in Natural Water Systems. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:15682-15692. [PMID: 36469812 DOI: 10.1021/acs.jafc.2c05780] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Overuse of nitenpyram and nitrofurazone in agricultural products poses enormous risks to ecosystems, and effective detection and quantification of these residual pollutants are of great concern. Although several strategies have been established for detecting nitenpyram and nitrofurazone in water, searching for a new sensor material with great sensitivity, selectivity, and recyclability remains challenging. Here, we design and synthesize a stable metal-organic framework (MOF) (Zn-CPTA) by employing an organic linker based on the coordination features of benzene-1,4-dicarboxylate and picolinic acid. Zn-CPTA is a 3D framework built from Zn-O-Zn chains called rod secondary building units, which contains 1D open channels modified by uncoordinated carboxyl O atoms and exhibits impressive chemical stability in aqueous solutions within a pH range from 2 to 12. Especially, fluorescent Zn-CPTA can quickly and sensitively detect nitenpyram and nitrofurazone in aqueous solutions with a high quenching constant and low detection limit (LOD) (KSV values for nitenpyram and nitrofurazone are 1.67 × 104 and 1.02 × 105 M-1 with LOD of 0.625 and 0.126 μM, respectively), as well as outstanding selectivity and recyclability. Notably, the LOD value is the lowest among the reported MOFs used for nitrofurazone detection. Besides, experiments and density functional theory calculations are combined to explain the quenching mechanism. Finally, the practical application of Zn-CPTA was further explored in real environment samples with satisfactory recoveries.
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Affiliation(s)
- Weize Wang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, P. R. China
| | - Fan Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Yuchen Yang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, P. R. China
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Bo Liu
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, P. R. China
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6
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Enhanced microfluidic open interface for the direct coupling of solid phase microextraction with liquid electron ionization-tandem mass spectrometry. J Chromatogr A 2022; 1681:463479. [PMID: 36108353 DOI: 10.1016/j.chroma.2022.463479] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/01/2022] [Accepted: 09/04/2022] [Indexed: 11/21/2022]
Abstract
Solid-phase microextraction (SPME) directly coupled to MS is a widespread technique for determining small molecules in different matrices in many application fields. Here we present a modified microfluidic open interface (MOI) connected to a passive-flow-splitter device (PFS) for the direct coupling of SPME to a liquid-electron ionization (LEI) interface in a tandem mass spectrometer for the analysis of complex biological samples. No chromatographic separation is involved. The new MOI-PFS configuration was designed to speed up the sample transfer to MS, improving the signal-to-noise ratio and peak shape and leading to fast and sensitive results. MOI-PFS-LEI-MS/MS experiments were conducted using fentanyl as a model compound in water and blood serum. The method uses a C18 Bio-SPME fiber by direct immersion (3 min) in 300 µL of the sample followed by rapid desorption (1 min) in a flow isolated volume (MOI chamber, 2.5 µL) filled with 100% acetonitrile. The PFS permits the rapid transfer of a fraction of the sample into the MS via the LEI interface. The optimal conditions were obtained at a flow rate of 10 µL·min-1 and a 1:20 split ratio. Altogether, extraction, desorption, and analysis require approximately 5 min. Good interday and intraday precision, excellent linearity and LOQs in the µg·L-1 range were obtained for fentanyl in water and serum. Greenness evaluation demonstrated a limited environmental impact of this technique.
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7
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Ma X. Recent Advances in Mass Spectrometry-Based Structural Elucidation Techniques. Molecules 2022; 27:6466. [PMID: 36235003 PMCID: PMC9572214 DOI: 10.3390/molecules27196466] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/17/2022] Open
Abstract
Mass spectrometry (MS) has become the central technique that is extensively used for the analysis of molecular structures of unknown compounds in the gas phase. It manipulates the molecules by converting them into ions using various ionization sources. With high-resolution MS, accurate molecular weights (MW) of the intact molecular ions can be measured so that they can be assigned a molecular formula with high confidence. Furthermore, the application of tandem MS has enabled detailed structural characterization by breaking the intact molecular ions and protonated or deprotonated molecules into key fragment ions. This approach is not only used for the structural elucidation of small molecules (MW < 2000 Da), but also crucial biopolymers such as proteins and polypeptides; therefore, MS has been extensively used in multiomics studies for revealing the structures and functions of important biomolecules and their interactions with each other. The high sensitivity of MS has enabled the analysis of low-level analytes in complex matrices. It is also a versatile technique that can be coupled with separation techniques, including chromatography and ion mobility, and many other analytical instruments such as NMR. In this review, we aim to focus on the technical advances of MS-based structural elucidation methods over the past five years, and provide an overview of their applications in complex mixture analysis. We hope this review can be of interest for a wide range of audiences who may not have extensive experience in MS-based techniques.
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Affiliation(s)
- Xin Ma
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Dr NW, Atlanta, GA 30332, USA
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8
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Vargas Medina DA, Pereira dos Santos NG, Maciel EVS, Lanças FM. Current prospects on nano liquid chromatography coupled to electron ionization mass spectrometry (nanoLC-EI-MS). J LIQ CHROMATOGR R T 2022. [DOI: 10.1080/10826076.2022.2110114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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9
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Mohebbi A, Farajzadeh MA, Sorouraddin SM, Abbaspour M. Improved magnetic solid-phase extraction based on magnetic sorbent obtained from sand for the extraction of pesticides from fruit juice. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:4266-4275. [PMID: 35040126 DOI: 10.1002/jsfa.11778] [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: 01/26/2020] [Revised: 05/08/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND A combination of magnetic solid-phase extraction using an efficient and cheap magnetic sorbent obtained from sand and dispersive liquid-liquid microextraction has been developed for the extraction of nine multiclass pesticides (clodinafop-propargyl, haloxyfop-R-methyl, fenoxaprop-P-ethyl, oxadiazon, penconazole, diniconazole, chlorpyrifos, fenazaquin, and fenpropathrin) from commercial fruit juices (sour cherry, pomegranate, grape, watermelon, orange, apricot, and peach juices). The enriched pesticides were determined by gas chromatography-flame ionization detector and gas chromatography-mass spectrometry. The sorbent was natural iron oxide entrapped in silica along with some impurities. In this method, to extract the analytes from the samples, an appropriate amount of the magnetic sorbent (at mg level) is added. Then the sorbent particles are isolated from the solution using an external magnetic field and the adsorbed analytes are desorbed from the sorbent by acetone. In the following, a dispersive liquid-liquid microextraction procedure is carried out to concentrate the analytes more and to reach low limits of detection. RESULTS Under optimized extraction conditions, the method revealed satisfactory repeatability (relative standard deviation ≤8% for intra-day and inter-day precision), reasonable extraction recovery (43.3-55.9%), high enrichment factors (433-559), and low limits of detection (0.45-0.89 μg L-1 ). CONCLUSION The method was applied in the analysis of pesticides in various fruit juices. Chlorpyrifos was found in peach juice at a concentration of 27 ± 2 μg L-1 (n = 3) using a gas chromatography-flame ionization detector. To verify the results, the peach juice was also injected into gas chromatography-mass spectrometry after applying the proposed extraction method. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Ali Mohebbi
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Mir Ali Farajzadeh
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | | | - Maryam Abbaspour
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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10
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Maciel EVS, Pereira dos Santos NG, Vargas Medina DA, Lanças FM. Electron ionization mass spectrometry: Quo vadis? Electrophoresis 2022; 43:1587-1600. [DOI: 10.1002/elps.202100392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/05/2022] [Accepted: 04/27/2022] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | - Fernando Mauro Lanças
- Institute of Chemistry of São Carlos University of São Paulo São Carlos São Paulo Brazil
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11
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Şahin S, Üstündağ Z, Caglayan MO. Spectroscopic ellipsometry-based aptasensor platform for bisphenol a detection. Talanta 2022. [DOI: 10.1016/j.talanta.2022.123885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Brezestean IA, Tosa N, Falamas A, Cuibus D, Muntean CM, Bende A, Cozar B, Berghian-Grosan C, Farcău C. Silver Nanoparticle Films Obtained by Convective Self-Assembly for Surface-Enhanced Raman Spectroscopy Analyses of the Pesticides Thiabendazole and Endosulfan. Front Chem 2022; 10:915337. [PMID: 35844660 PMCID: PMC9277229 DOI: 10.3389/fchem.2022.915337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
Pesticides pose a great threat to human health and their rapid detection has become an urgent public safety issue engaging the scientific community to search for fast and reliable detection techniques. In this context, Surface Enhanced Raman Spectroscopy (SERS) has emerged as a valuable detection and analysis tool due to its high sensitivity and selectivity, proving its suitability for the food industry and environmental monitoring applications. Here, we report on the fabrication of colloidal silver nanoparticle (AgNP) films by convective self-assembly (CSA) on solid planar substrate and their use for the SERS analyses of two types of pesticides, the fungicide thiabendazole (TBZ) and the insecticide α-endosulfan (α-ES). Electron microscopy shows that these nanoparticle films are dense, highly compact, and uniform across several mm2 areas. The SERS efficiency of the fabricated AgNP films is evaluated using a well-known Raman probe, p-aminothiophenol, for multiple excitation laser lines (532 nm, 633 nm, and 785 nm). The films exhibit the largest SERS enhancement factors for 785 nm excitation, reaching values larger than 105. Thiabendazole could be readily adsorbed on the AgNPs without any sample surface functionalization and detected down to 10−6 M, reaching the sub-ppm range. Endosulfan, a challenging analyte with poor affinity to metal surfaces, was captured near the metal surface by using self-assembled alkane thiol monolayers (hexanethiol and octanethiol), as demonstrated by the thorough vibrational band analysis, and supported by density functional theory (DFT) calculations. In addition, principal component analysis (PCA) based on SERS spectra offers significant leverage in discrimination of the molecules anchored onto the metallic nanostructured surface. This present study demonstrates the utility of self-assembled colloidal nanoparticle films as SERS substrates for a broad range of analytes (para-aminothiophenol, thiabendazole, α-endosulfan, and alkanethiols) and contributes to the development of SERS-based sensors for pesticides detection, identification and monitoring.
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Affiliation(s)
- I A Brezestean
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania.,Biomolecular Physics Department, Babes-Bolyai University, Cluj-Napoca, Romania
| | - N Tosa
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - A Falamas
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - D Cuibus
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - C M Muntean
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - A Bende
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - B Cozar
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - C Berghian-Grosan
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - C Farcău
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
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13
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Li M, Di X, Jiang Z. Enantioselective separation, analysis and stereoselective dissipation of the chiral pesticide cloquintocet-mexyl using a modified QuEChERS method by high-performance liquid chromatography tandem mass spectrometry. CHEMOSPHERE 2022; 291:133084. [PMID: 34848224 DOI: 10.1016/j.chemosphere.2021.133084] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/13/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
An efficient and novel enantioseparation method was successfully developed and validated to quantify the enantiomers of cloquintocet-mexyl in soil, millet, enoki mushroom, oilseed rape, and watermelon using a modified QuEChERS technique combined with HPLC-MS/MS. This method showed reliable performances for determining both enantiomers of cloquintocet-mexyl in all five matrices. The limits of detection and limits of quantification were in the range of 0.06-0.15 μg kg-1 and 0.2-0.5 μg kg-1, respectively. Good linearities were obtained with correlation coefficients ≥0.9954. The mean recoveries were between 84.1% and 111.5%, with relative standard deviations ranging from 1.2% to 9.8% at three spiked levels. Additionally, the study of stereoselective dissipation of cloquintocet-mexyl in soil indicated that (R)-cloquintocet-mexyl was preferentially degraded. This work is the first to describe a chiral analytical method and enantioselective behavior of cloquintocet-mexyl and provide basic data for the risk evaluation of cloquintocet-mexyl in food and environmental safety.
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Affiliation(s)
- Meng Li
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, 110016, Liaoning Province, People's Republic of China
| | - Xin Di
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, 110016, Liaoning Province, People's Republic of China.
| | - Zhen Jiang
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, 110016, Liaoning Province, People's Republic of China.
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14
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Famiglini G, Palma P, Termopoli V, Cappiello A. The history of electron ionization in LC-MS, from the early days to modern technologies: A review. Anal Chim Acta 2021; 1167:338350. [PMID: 34049632 DOI: 10.1016/j.aca.2021.338350] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 02/18/2021] [Accepted: 02/20/2021] [Indexed: 02/06/2023]
Abstract
This review article traces the history of the use of liquid chromatography coupled with mass spectrometry (LC-MS) using electron ionization (EI) from the first attempts up to the present day. At the time of the first efforts to couple LC to MS, 70 eV EI was the most common ionization technique, typically used in gas chromatography-mass spectrometry (GC-MS) and providing highly reproducible mass spectra that could be collated in libraries. Therefore, it was obvious to transport this dominant approach to the early LC-MS coupling attempts. The use of LC coupled to EI-MS is challenging mainly due to restrictions related to high-vacuum and high-temperature conditions required for the operation of EI and the need to remove the eluent carrying the analyte before entering the ion source. The authors will take readers through a journey of about 50 years, showing how through the succession of different attempts it has been possible to successfully couple LC with EI-MS, which in principle appear to be incompatible.
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Affiliation(s)
- Giorgio Famiglini
- LC-MS Laboratory, Department of Pure and Applied Sciences, University of Urbino, Urbino, Italy.
| | - Pierangela Palma
- LC-MS Laboratory, Department of Pure and Applied Sciences, University of Urbino, Urbino, Italy
| | - Veronica Termopoli
- LC-MS Laboratory, Department of Pure and Applied Sciences, University of Urbino, Urbino, Italy
| | - Achille Cappiello
- LC-MS Laboratory, Department of Pure and Applied Sciences, University of Urbino, Urbino, Italy.
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15
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Erarpat S, Bodur S, Bakırdere S. Nanoparticles Based Extraction Strategies for Accurate and Sensitive Determination of Different Pesticides. Crit Rev Anal Chem 2021; 52:1370-1385. [PMID: 33576246 DOI: 10.1080/10408347.2021.1876552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Sample preparation methods have become indispensable steps in analytical measurements not only to lower the detection limit but also to eliminate the matrix effect although more sophisticated instruments are being commonly used in routine analyses. Solid phase extraction (SPE) is one of the main extraction/preconcentration methods used to extract and purify target analytes along with simple and rapid procedures but some limitations have led to seek for an easy, sensitive and fast extraction methods with analyte-selective sorbents. Nanoparticles with different modifications have been used as spotlight to enhance extraction efficiency of target pesticides from complicated matrices. Carbon-based, metal and metal oxides, silica and polymer-based nanoparticles have been explored as promising sorbents for pesticide extraction. In this review, different types of nanoparticles used in the preconcentration of pesticides in various samples are outlined and examined. Latest studies in the literature are discussed in terms of their instrumental detection, sample matrix and limit of detection values. Novel strategies and future directions of nanoparticles used in the extraction and preconcentration of pesticides are also discussed.
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Affiliation(s)
- Sezin Erarpat
- Department of Chemistry, Faculty of Art and Science, Yıldız Technical University, İstanbul, Turkey
| | - Süleyman Bodur
- Department of Chemistry, Faculty of Art and Science, Yıldız Technical University, İstanbul, Turkey
| | - Sezgin Bakırdere
- Department of Chemistry, Faculty of Art and Science, Yıldız Technical University, İstanbul, Turkey.,Turkish Academy of Sciences (TÜBA), Ankara, Turkey
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16
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Rocío-Bautista P, Famiglini G, Termopoli V, Palma P, Nazdrajić E, Pawliszyn J, Cappiello A. Direct Coupling of Bio-SPME to Liquid Electron Ionization-MS/MS via a Modified Microfluidic Open Interface. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:262-269. [PMID: 33213139 PMCID: PMC8016190 DOI: 10.1021/jasms.0c00303] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/04/2020] [Accepted: 11/11/2020] [Indexed: 05/25/2023]
Abstract
We present a modified microfluidic open interface (MOI) for the direct coupling of Bio-SPME to a liquid electron ionization-tandem mass spectrometry (LEI-MS/MS) system as a sensitive technique that can directly analyze biological samples without the need for sample cleanup or chromatographic separations as well as without measurable matrix effects (ME). We selected fentanyl as test compound. The method uses a C18 Bio-SPME fiber by direct immersion (DI) in urine and plasma and the subsequent quick desorption (1 min) in a flow-isolated volume (2.5 μL) filled with an internal standard-acetonitrile solution. The sample is then transferred to an EI source of a triple-quadrupole mass spectrometer via a LEI interface at a nanoscale flow rate. The desorption and analysis procedure requires less than 10 min. Up to 150 samples can be analyzed without observing a performance decline, with fentanyl quantitation at microgram-per-liter levels. The method workflow is extremely dependable, relatively fast, sustainable, and leads to reproducible results that enable the high-throughput screening of various biological samples.
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Affiliation(s)
- Priscilla Rocío-Bautista
- Department
of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43121 Parma, Italy
- Department
of Pure and Applied Sciences, University
of Urbino, 61029 Urbino, Italy
| | - Giorgio Famiglini
- Department
of Pure and Applied Sciences, University
of Urbino, 61029 Urbino, Italy
| | - Veronica Termopoli
- Department
of Pure and Applied Sciences, University
of Urbino, 61029 Urbino, Italy
| | - Pierangela Palma
- Department
of Pure and Applied Sciences, University
of Urbino, 61029 Urbino, Italy
- Chemistry
Department, Vancouver Island University
VIU, Nanaimo, BC V9R5S5 Canada
| | - Emir Nazdrajić
- Department
of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department
of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Achille Cappiello
- Department
of Pure and Applied Sciences, University
of Urbino, 61029 Urbino, Italy
- Chemistry
Department, Vancouver Island University
VIU, Nanaimo, BC V9R5S5 Canada
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17
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Tsizin S, Fialkov AB, Amirav A. Electron Ionization Mass Spectrometry for Both Liquid and Gas Chromatography in One System without the Need for Hardware Adjustments. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:1713-1721. [PMID: 32543199 DOI: 10.1021/jasms.0c00136] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A new instrument that bridges the gap between gas chromatography (GC) and liquid chromatography (LC) mass spectrometry (MS) was developed. In this instrument GC-MS and electron ionization LC-MS were combined in one MS system with method based mode changing. The LC pneumatic spray formation interface to MS was mounted on top of an otherwise unused GC detector slot and was connected with a flow restriction capillary to the MS through the GC oven and into the MS transfer line, parallel to the GC capillary column. The LC output mobile phase flow is directed into a spray formation and vaporization chamber. The pneumatic spray results in fine spray droplets that are thermally vaporized at a pressure equal to or greater than ambient. A portion of the vaporized mixture is directed into the heated flow restriction capillary that connects the spray formation and vaporization chamber into the electron ionization (EI) ion source, while most of the vaporized spray is released to the atmosphere. The combined GC-MS and LC-MS system can work either with standard EI or with cold EI via interfacing the flow restriction capillary into a supersonic nozzle forming a supersonic molecular beam of a vibrationally cold sample compound. We found that EI-LC-MS with cold EI has many benefits when compared with standard EI. The EI-LC-MS interface can also serve for flow injection analysis. The performance of the combined system is demonstrated in the analysis of a few sample mixtures by both GC-MS and LC-MS analysis, sequentially without hardware adjustments.
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Affiliation(s)
- Svetlana Tsizin
- School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
| | | | - Aviv Amirav
- School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
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18
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Abonamah JV, Eckenrode BA, Moini M. On-site detection of fentanyl and its derivatives by field portable nano-liquid chromatography-electron lonization-mass spectrometry (nLC-EI-MS). Forensic Chem 2019. [DOI: 10.1016/j.forc.2019.100180] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Shuang Y, Liao Y, Wang H, Wang Y, Li L. Preparation and evaluation of a triazole-bridged bis(β-cyclodextrin)-bonded chiral stationary phase for HPLC. Chirality 2019; 32:168-184. [PMID: 31749196 DOI: 10.1002/chir.23147] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/09/2019] [Accepted: 10/16/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Yazhou Shuang
- College of Chemistry, Nanchang University, Nanchang, China
| | - Yuqin Liao
- College of Chemistry, Nanchang University, Nanchang, China
| | - Hui Wang
- College of Chemistry, Nanchang University, Nanchang, China
| | - Yuanxing Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Laisheng Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China.,College of Chemistry, Nanchang University, Nanchang, China
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20
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Rigano F, Russo M, Arigò A, Dugo P, Mondello L. Combining linear retention index and electron ionization mass spectrometry for a reliable identification in nano liquid chromatography. J Chromatogr A 2019; 1610:460581. [PMID: 31610919 DOI: 10.1016/j.chroma.2019.460581] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/27/2019] [Accepted: 09/29/2019] [Indexed: 10/25/2022]
Abstract
The present research is focused on the object to improve identification capability in liquid chromatography (LC), by creating a system as similar as possible to gas chromatography (GC), where the combination/complementarity of Linear Retention Index (LRI) and Electron Ionization Mass Spectrometry (EI-MS) data makes the identification process easy, automatic and reliable. Conversely, in LC the untargeted characterization of real-world samples is still a challenge, due to the not repeatable and poorly informative nature of typical atmospheric pressure ionization mass spectrometry, normally hyphenated to LC. In the last decades the miniaturization of LC instrumentation together with the considerable progresses in MS vacuum pump capability has made the LC-EI-MS hyphenation more feasible. In the present work, a prototypal nanoLC-EI-MS system was used for the determination of typically LC-amenable compunds, such as coumarins, furocoumarins and polymethoxyflavones in citrus essential oils. All the compounds provided high quality EI-MS spectra, evaluated by the comparison with thousands of spectra present in commercial EI-MS libraries. Spectral similarities major than 80% were achieved. Furthermore, an LRI system, based on the use of an alkyl aryl ketone homologue reference series, was proposed as additional filter to achieve a univocal identification. Then, a novel dual-filter LRI/EI-MS library was built and resulted very helpful in the case of isomeric compounds characterized by identical EI-MS spectrum, but different retention behaviour. The very low inter-day variability attained for each LRI value, together with the satisfactory chromatographic resolution of the developed method, led to a 100% reliability of the identification process based on LRI.
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Affiliation(s)
- Francesca Rigano
- Chromaleont s.r.l., c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Marina Russo
- Unit of Food Science and Nutrition, Department of Medicine, University Campus Bio-Medico of Rome, Rome, Italy
| | - Adriana Arigò
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Paola Dugo
- Chromaleont s.r.l., c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy; Unit of Food Science and Nutrition, Department of Medicine, University Campus Bio-Medico of Rome, Rome, Italy; Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy; BeSep s.r.l., c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Luigi Mondello
- Chromaleont s.r.l., c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy; Unit of Food Science and Nutrition, Department of Medicine, University Campus Bio-Medico of Rome, Rome, Italy; Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy; BeSep s.r.l., c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy.
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21
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Rigano F, Tranchida PQ, Dugo P, Mondello L. High-performance liquid chromatography combined with electron ionization mass spectrometry: A review. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.05.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Gannavarapu KP, Ganesh V, Thakkar M, Mitra S, Dandamudi RB. Nanostructured Diatom-ZrO 2 composite as a selective and highly sensitive enzyme free electrochemical sensor for detection of methyl parathion. SENSORS AND ACTUATORS. B, CHEMICAL 2019; 288:611-617. [PMID: 31772421 PMCID: PMC6879064 DOI: 10.1016/j.snb.2019.03.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
In the current work we report a simple and scalable technique for synthesis of ordered nanoporous Si-ZrO2 composite derived from the diatom Phaeodactylum tricornutum. The composite was well characterized using SEM, TEM-EDX, FTIR, TGA, BET and DLS. The diatom-ZrO2 was found to have a specific surface area of 140 m2/g, Si:Zr ratio of 1:4 and a particle size of 80 ± 2 nm. This composite was evaluated as an enzyme free electrochemical sensor towards the detection of methyl parathion (MP) and showed excellent sensing ability at extremely low detection limits of 54.3 pM and a linear concentration range of 3.4 nM to 64 μM. The diatom-ZrO2 composite was also found to be highly selective towards MP as shown by its response even in the presence of high concentrations of other interfering molecules and ions.
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Affiliation(s)
- Krishna Prasad Gannavarapu
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthinilayam Campus, Puttaparthi, Anantapur Dist, Andhra Pradesh, India
| | - V. Ganesh
- Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute, Karaikudi, Tamil Nadu, India
| | - Megha Thakkar
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, 151 Tiernan Hall, Newark, NJ, 07102, United States
| | - Somenath Mitra
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, 151 Tiernan Hall, Newark, NJ, 07102, United States
| | - Rajesh Babu Dandamudi
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthinilayam Campus, Puttaparthi, Anantapur Dist, Andhra Pradesh, India
- Corresponding author at: Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prashanthi Nilayam, 515134, India. (R.B. Dandamudi)
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23
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Wei D, Wu X, Ji M, Xu J, Dong F, Liu X, Zheng Y. Carboxin and its major metabolites residues in peanuts: Levels, dietary intake and chronic intake risk assessment. Food Chem 2019; 275:169-175. [DOI: 10.1016/j.foodchem.2018.09.087] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 09/13/2018] [Accepted: 09/13/2018] [Indexed: 01/10/2023]
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24
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Evaluation of a liquid electron ionization liquid chromatography-mass spectrometry interface. J Chromatogr A 2019; 1591:120-130. [PMID: 30660440 DOI: 10.1016/j.chroma.2019.01.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 12/20/2018] [Accepted: 01/11/2019] [Indexed: 11/27/2022]
Abstract
Liquid Electron Ionization (LEI), is an innovative liquid chromatography-mass spectrometry (LC-MS) interface that converts liquid HPLC eluent to the gas-phase in a mass spectrometer equipped with an electron ionization (EI) source. LEI extends the electronic spectra libraries access to liquid chromatography, providing a powerful tool in the untargeted approacssh. Negligible matrix effects allow accurate quantitative information. The purpose of this research was to evaluate the main aspects concerning the interfacing process. These fundamental studies were necessary to understand the mechanism of LEI in details, and improve the interfacing process, especially regarding robustness and sensitivity. Hardware components were installed to prevent analytes precipitation, reduce thermal decomposition of sensitive compounds, and to stabilize the nano-flow delivery with different mobile-phase compositions. Particular attention was devoted to insulating the heated vaporization area from the LC part of the system. Experiments were performed to optimize the interface inner capillary dimensions, and other operative parameters, including temperature, gas and liquid flow rates. Test compounds of environmental interest were selected based on molecular weight, thermal stability, volatility, and polarity. Robustness was evaluated with a set of replicated injections and calibration experiments using a soil matrix as a test sample. MRM detection limits in the low-picogram range were obtained for five pesticides belonging to different classes in a soil sample. High-quality electron ionization mass spectra of a mixture of pesticides were also obtained.
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25
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Chen H, Wang C, Zhang Z, He L. Combining Headspace Solid-Phase Microextraction and Surface-Enhanced Raman Spectroscopy To Detect the Pesticide Fonofos in Apple Juice. J Food Prot 2018; 81:1087-1092. [PMID: 29897273 DOI: 10.4315/0362-028x.jfp-17-505] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We developed an innovative approach that couples headspace solid-phase microextraction (SPME) with surface-enhanced Raman spectroscopy (SERS) to detect a volatile pesticide (i.e., fonofos) in a liquid complex matrix (i.e., apple juice). A gold nanoparticles-coated fiber was fabricated by reducing gold(III) on a chemically etched stainless steel wire to extract pesticide, using SPME. The fabricated fibers were then tested by a headspace-SPME method and a dip-SPME method, followed by SERS detection of fonofos in water and apple juice samples. Using the headspace-SPME method, we can detect as low as 5 ppb of fonofos in water and apple juice, compared with the dip-SPME method, which cannot detect lower than 10 ppb in water and 50 ppb in apple juice. This study demonstrated the potential capability of the headspace-SPME-SERS method for rapid (within 30 min) and sensitive detection of volatile and vaporizable compounds in complex matrices. The developed method could be a potential alternative approach to the gas chromatography method. Future work is needed to optimize the fiber by minimizing signal variation, and it should be tested in a variety of targeted compounds and matrices.
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Affiliation(s)
- Haoxin Chen
- 1 Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, USA (ORCID: http://orcid.org/0000-0001-8461-5325 [H.C.]); and
| | - Chunrong Wang
- 1 Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, USA (ORCID: http://orcid.org/0000-0001-8461-5325 [H.C.]); and.,2 School of Food Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China
| | - Zhiyun Zhang
- 1 Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, USA (ORCID: http://orcid.org/0000-0001-8461-5325 [H.C.]); and
| | - Lili He
- 1 Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, USA (ORCID: http://orcid.org/0000-0001-8461-5325 [H.C.]); and
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26
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Ma C, Liu Z, Qi Y, Wang S, Cao X, Wang J, She Y, Shao Y, Shen J, Zhang C, Jiang Z. Residue behavior and risk assessment of thifluzamide in the maize field ecosystem. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:21195-21204. [PMID: 29777494 DOI: 10.1007/s11356-018-2211-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 05/01/2018] [Indexed: 06/08/2023]
Abstract
In the present work, the dissipation kinetics and final residue levels of thifluzamide in the maize field ecosystem were investigated. Using a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction combined with liquid chromatography-tandem mass spectrometric detection (LC-MS/MS), a rapid, sensitive, efficient, and reliable method for extraction and quantitative analysis of thifluzamide residues in maize grain, maize plant, and soil was developed. Satisfactory recoveries of 78.7-97.0% were achieved with relative standard deviations (RSDs) in the range of 1.6 to 8.2%. The limits of detection (LODs) and the limit of quantification (LOQ) were 0.002-0.005 and 0.010 mg kg-1, respectively. The dissipation kinetics of thifluzamide in maize plant was well fitted by the first-order kinetic model with short half-lives of 0.19-0.22 days, while thifluzamide degraded slowly in soil with half-lives of 4.56-15.85 days. The final residues in maize grain, maize plant, and soil samples collected at the milk stage and the physiological maturity stage were no more than 0.010, 0.807, and 0.278 mg kg-1, respectively. Given that no maximum residue limit (MRL) for thifluzamide in maize has been established, the safety of this fungicide application was estimated by a dietary risk assessment. The hazard quotient was 0.03%, which was substantially less than 1, indicating that the long-term risk induced by the thifluzamide application on maize at the recommended dose is negligible. These results help governments to develop regulations for the safe use of thifluzamide.
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Affiliation(s)
- Cong Ma
- Food Science and Technology, Grain College, Henan University of Technology, Zhengzhou, 450052, People's Republic of China
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Zhongdong Liu
- Food Science and Technology, Grain College, Henan University of Technology, Zhengzhou, 450052, People's Republic of China.
| | - Yan Qi
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Shanshan Wang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China.
| | - Xiaolin Cao
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Jing Wang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China.
| | - Yongxin She
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Yong Shao
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Jitai Shen
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Chao Zhang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
| | - Zejun Jiang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, People's Republic of China
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27
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Huo S, Zhao H, Dong J, Xu J. Facile Synthesis of Ordered Mesoporous Zirconia for Electrochemical Enrichment and Detection of Organophosphorus Pesticides. ELECTROANAL 2018. [DOI: 10.1002/elan.201800284] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Shijie Huo
- NEST lab, Department of Chemistry; Shanghai University; Shanghai 200444 China
| | - Hongbin Zhao
- NEST lab, Department of Chemistry; Shanghai University; Shanghai 200444 China
| | - Junping Dong
- NEST lab, Department of Chemistry; Shanghai University; Shanghai 200444 China
| | - Jiaqiang Xu
- NEST lab, Department of Chemistry; Shanghai University; Shanghai 200444 China
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28
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Xie SL, Junaid M, Bian WP, Luo JJ, Syed JH, Wang C, Xiong WX, Ma YB, Niu A, Yang XJ, Zou JX, Pei DS. Generation and application of a novel transgenic zebrafish line Tg(cyp1a:mCherry) as an in vivo assay to sensitively monitor PAHs and TCDD in the environment. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:723-732. [PMID: 29154098 DOI: 10.1016/j.jhazmat.2017.11.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/24/2017] [Accepted: 11/12/2017] [Indexed: 02/06/2023]
Abstract
The polycyclic aromatic hydrocarbons (PAHs) and 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) are classified as human carcinogens, and can also cause serious health problems. To develop a convenient bio-monitoring tool for the detection of PAHs and TCDD in the environment, we generated a transgenic zebrafish line Tg(cyp1a:mCherry) with cyp1a promoter driving mCherry expression. Here, Tg(cyp1a:mCherry) embryos were treated with different concentrations of TCDD and five US EPA priority PAHs congeners. The results showed that the expressions of mCherry and endogenous cyp1a were consistent with the PAHs exposure concentrations and were largely induced by TCDD and ≥4-ring PAHs. Moreover, the sensitivity of Tg(cyp1a:mCherry) embryos was also evaluated through monitoring of the PAHs contamination in the water and soil samples. The elevated red fluorescent signals and cyp1a expression levels were observed in Tg(cyp1a:mCherry) zebrafish after exposure to water samples and soil organic extracts with higher concentrations of ≥4-ring PAHs. These results further strengthen our findings of concentration- and congener-dependent response of the newly established zebrafish. Taken together, the newly established zebrafish line will prove as a sensitive, efficient and convenient tool for monitoring PAHs and TCDD contamination in the environment.
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Affiliation(s)
- Shao-Lin Xie
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Muhammad Junaid
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wan-Ping Bian
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Juan-Juan Luo
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Center for Neuroscience, Shantou University Medical College, Shantou 515041, China
| | - Jabir Hussain Syed
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Chao Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Wen-Xu Xiong
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Yan-Bo Ma
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Aping Niu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao-Jun Yang
- Center for Neuroscience, Shantou University Medical College, Shantou 515041, China
| | - Ji-Xing Zou
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
| | - De-Sheng Pei
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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29
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Practical Application of Aptamer-Based Biosensors in Detection of Low Molecular Weight Pollutants in Water Sources. Molecules 2018; 23:molecules23020344. [PMID: 29414854 PMCID: PMC6017897 DOI: 10.3390/molecules23020344] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 01/30/2018] [Accepted: 01/30/2018] [Indexed: 01/08/2023] Open
Abstract
Water pollution has become one of the leading causes of human health problems. Low molecular weight pollutants, even at trace concentrations in water sources, have aroused global attention due to their toxicity after long-time exposure. There is an increased demand for appropriate methods to detect these pollutants in aquatic systems. Aptamers, single-stranded DNA or RNA, have high affinity and specificity to each of their target molecule, similar to antigen-antibody interaction. Aptamers can be selected using a method called Systematic Evolution of Ligands by EXponential enrichment (SELEX). Recent years we have witnessed great progress in developing aptamer selection and aptamer-based sensors for low molecular weight pollutants in water sources, such as tap water, seawater, lake water, river water, as well as wastewater and its effluents. This review provides an overview of aptamer-based methods as a novel approach for detecting low molecular weight pollutants in water sources.
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30
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Wei D, Wu X, Xu J, Dong F, Liu X, Zheng Y, Ji M. Determination of Ochratoxin A contamination in grapes, processed grape products and animal-derived products using ultra-performance liquid chromatography-tandem mass spectroscopy system. Sci Rep 2018; 8:2051. [PMID: 29391603 PMCID: PMC5794868 DOI: 10.1038/s41598-018-20534-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 01/18/2018] [Indexed: 11/08/2022] Open
Abstract
We developed a sensitive and rapid analytical method to determine the level of Ochratoxin A contamination in grapes, processed grape products and in foods of animal origin (a total of 11 different food matrices). A pretreatment that followed a "quick, easy, cheap, effective, rugged, and safe" protocol was optimized to extract Ochratoxin A from the matrices, and the extracted Ochratoxin A was then detected with the use of a highly sensitive ultra-performance liquid chromatography-tandem mass spectrometry system. Good linearities of Ochratoxin A were obtained in the range of 0.1-500 µg L-1 (correlation coefficient (R2) > 0.9994 in each case). Mean recovery from the 11 matrices ranged from 70.3 to 114.7%, with a relative standard deviation ≤19.2%. The method is easy to use and yields reliable results for routine determination of Ochratoxin A in food products of grape and animal origin. In store-purchased foods and foods obtained from the field and wholesale suppliers, the Ochratoxin A concentration ranged from undetectable to 10.14 µg kg-1, with the more contaminated samples being mainly those of processed grape products. Our results indicate that the necessity for regulation of and supervision during the processing of grape products.
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Affiliation(s)
- Dongmei Wei
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110161, China
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiaohu Wu
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jun Xu
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Fengshou Dong
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xingang Liu
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yongquan Zheng
- Risk Assessment Laboratory for biological hazards of agricultural product quality and safety, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| | - Mingshan Ji
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110161, China.
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Liang X, Li M, Mack J, Lobb K, Zhu W. Iron( iii)porphyrin electrocatalyzed enantioselective carbon-chloride bond cleavage of hexachlorocyclohexanes (HCHs): combined experimental investigation and theoretical calculations. Dalton Trans 2018; 47:11470-11476. [DOI: 10.1039/c8dt02510j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantioselective electrocatalysis of α-, β-, γ- and δ-hexachlorocyclohexanes (HCHs) by tetrakis-pentafluorophenyl-Fe(iii)porphyrin is described.
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Affiliation(s)
- Xu Liang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
- State Key Laboratory of Coordination Chemistry
| | - Minzhi Li
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - John Mack
- Department of Chemistry
- Rhodes University
- South Africa
| | - Kevin Lobb
- Department of Chemistry
- Rhodes University
- South Africa
| | - Weihua Zhu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
- State Key Laboratory of Coordination Chemistry
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Electron Ionization LC-MS. ADVANCES IN THE USE OF LIQUID CHROMATOGRAPHY MASS SPECTROMETRY (LC-MS) - INSTRUMENTATION DEVELOPMENTS AND APPLICATIONS 2018. [DOI: 10.1016/bs.coac.2017.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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33
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Sun T, Sun H, Zhao F. Dispersive solid-phase extraction for the determination of trace organochlorine pesticides in apple juices using reduced graphene oxide coated with ZnO nanocomposites as sorbent. J Sep Sci 2017; 40:3725-3733. [DOI: 10.1002/jssc.201700599] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 07/09/2017] [Accepted: 07/10/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Ting Sun
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang P. R. China
| | - Hefeng Sun
- The Ping Mei Senior High School; Chifeng P. R. China
| | - Feng Zhao
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang P. R. China
- Henan Province Key Laboratory of New Opto-Electronic Functional Materials; Anyang P. R. China
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34
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Pérez-Fernández V, Mainero Rocca L, Tomai P, Fanali S, Gentili A. Recent advancements and future trends in environmental analysis: Sample preparation, liquid chromatography and mass spectrometry. Anal Chim Acta 2017; 983:9-41. [DOI: 10.1016/j.aca.2017.06.029] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 05/30/2017] [Accepted: 06/01/2017] [Indexed: 02/06/2023]
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35
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Chen X, Dong F, Xu J, Liu X, Wu X, Zheng Y. Effective Monitoring of Fluxapyroxad and Its Three Biologically Active Metabolites in Vegetables, Fruits, and Cereals by Optimized QuEChERS Treatment Based on UPLC-MS/MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:8935-8943. [PMID: 27786469 DOI: 10.1021/acs.jafc.6b03253] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Qualitative analysis and quantification of pesticide residues in foodstuff are essential to our health in daily life, especially regarding their metabolites, which may be more toxic and persistent. Thus, a valid analytical measure for detection of fluxapyroxad and its three metabolites (M700F002 (C-2), M700F008 (C-8), M700F048 (C-48)) in vegetables (cucumber, tomato, and pepper), fruits (grape, apple), and cereals (wheat, rice) was developed by UPLC-MS/MS with negative ion mode. The target compounds were extracted by acetonitrile contain 0.2% formic acid (v/v), and the extractions were cleaned up by octadecylsilane sorbents. The limits of quantitation and quantification were less than 0.14 μg kg-1 and 0.47 μg kg-1 in seven matrices. Furthermore, recoveries at levels of 0.01, 0.05, and 0.1 mg kg-1 ranged from 74.9% to 110.5% with relative standard deviations ≤15.5% (n = 5). The method is validated to be effective and robust for the routine supervising of fluxapyroxad and its metabolites.
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Affiliation(s)
- Xixi Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, P.R. China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, P.R. China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, P.R. China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, P.R. China
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, P.R. China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, P.R. China
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36
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Preparation of Graphene Sheets with Covalently Bonded Fe3O4 for Magnetic Solid-Phase Extraction Applied to Organochlorine Pesticides in Orange Juice. Chromatographia 2016. [DOI: 10.1007/s10337-016-3024-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Seemann B, Alon T, Tsizin S, Fialkov AB, Amirav A. Electron ionization LC-MS with supersonic molecular beams--the new concept, benefits and applications. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:1252-63. [PMID: 26505770 DOI: 10.1002/jms.3695] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 08/19/2015] [Accepted: 08/20/2015] [Indexed: 05/28/2023]
Abstract
A new type of electron ionization LC-MS with supersonic molecular beams (EI-LC-MS with SMB) is described. This system and its operational methods are based on pneumatic spray formation of the LC liquid flow in a heated spray vaporization chamber, full sample thermal vaporization and subsequent electron ionization of vibrationally cold molecules in supersonic molecular beams. The vaporized sample compounds are transferred into a supersonic nozzle via a flow restrictor capillary. Consequently, while the pneumatic spray is formed and vaporized at above atmospheric pressure the supersonic nozzle backing pressure is about 0.15 Bar for the formation of supersonic molecular beams with vibrationally cold sample molecules without cluster formation with the solvent vapor. The sample compounds are ionized in a fly-though EI ion source as vibrationally cold molecules in the SMB, resulting in 'Cold EI' (EI of vibrationally cold molecules) mass spectra that exhibit the standard EI fragments combined with enhanced molecular ions. We evaluated the EI-LC-MS with SMB system and demonstrated its effectiveness in NIST library sample identification which is complemented with the availability of enhanced molecular ions. The EI-LC-MS with SMB system is characterized by linear response of five orders of magnitude and uniform compound independent response including for non-polar compounds. This feature improves sample quantitation that can be approximated without compound specific calibration. Cold EI, like EI, is free from ion suppression and/or enhancement effects (that plague ESI and/or APCI) which facilitate faster LC separation because full separation is not essential. The absence of ion suppression effects enables the exploration of fast flow injection MS-MS as an alternative to lengthy LC-MS analysis. These features are demonstrated in a few examples, and the analysis of the main ingredients of Cannabis on a few Cannabis flower extracts is demonstrated. Finally, the advantages of EI-LC-MS with SMB are listed and discussed.
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Affiliation(s)
- Boaz Seemann
- School of Chemistry, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Tal Alon
- School of Chemistry, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Svetlana Tsizin
- School of Chemistry, Tel Aviv University, Tel Aviv, 69978, Israel
| | | | - Aviv Amirav
- School of Chemistry, Tel Aviv University, Tel Aviv, 69978, Israel
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38
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Wang Y, Jin J, Yuan C, Zhang F, Ma L, Qin D, Shan D, Lu X. A novel electrochemical sensor based on zirconia/ordered macroporous polyaniline for ultrasensitive detection of pesticides. Analyst 2015; 140:560-6. [DOI: 10.1039/c4an00981a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A simple and mild strategy was proposed to develop a novel electrochemical sensor based on zirconia/ordered macroporous polyaniline (ZrO2/OMP) and further used for the detection of methyl parathion (MP), one of the organophosphate pesticides (OPPs).
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Affiliation(s)
- Yonglan Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Jun Jin
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Caixia Yuan
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Fan Zhang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Linlin Ma
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Dongdong Qin
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Duoliang Shan
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
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39
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Tao Y, Dong F, Xu J, Liu X, Cheng Y, Liu N, Chen Z, Zheng Y. Green and sensitive supercritical fluid chromatographic-tandem mass spectrometric method for the separation and determination of flutriafol enantiomers in vegetables, fruits, and soil. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11457-11464. [PMID: 25376483 DOI: 10.1021/jf504324t] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A green and sensitive chiral analytical method was developed to determine flutriafol enantiomers in vegetables (tomato, cucumber), fruits (apple, grape), and soil by supercritical fluid chromatography-tandem mass spectrometry. The enantioseparation was performed within 3.50 min using Chiralpak IA-3 column with CO2/methanol (88:12, v/v) as the mobile phase at a 2.2 mL/min flow rate. The postcolumn compensation technology provided with 1% formic acid/methanol greatly improved the ionization efficiency of mass spectrometry. Column temperature, auto back pressure regulator pressure, and flow rate of compensation solvent were optimized to 30 °C, 2200 psi, and 0.1 mL/min, respectively. The simple and fast QuEChERS pretreatment method was adopted. Mean recoveries for flutriafol enantiomers were 77.2-98.9% with RSDs ≤ 9.6% in all matrices. The limits of quantification ranged from 0.41 to 1.18 μg/kg. Well-applied to analyze authentic samples, the developed method could act as a versatile strategy for the analysis of flutriafol enantiomers in food and environmental matrices.
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Affiliation(s)
- Yan Tao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
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40
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Tao Y, Xu J, Liu X, Cheng Y, Liu N, Chen Z, Dong F, Zheng Y. A quick, easy, cheap, effective, rugged, and safe method for the simultaneous detection of four triazolone herbicides in cereals combined with ultrahigh performance liquid chromatography with tandem mass spectrometry. J Sep Sci 2014; 37:2340-8. [DOI: 10.1002/jssc.201400186] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 05/31/2014] [Accepted: 06/03/2014] [Indexed: 02/05/2023]
Affiliation(s)
- Yan Tao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing P.R. China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing P.R. China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing P.R. China
| | - Youpu Cheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing P.R. China
| | - Na Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing P.R. China
| | - Zenglong Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing P.R. China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing P.R. China
| | - Yonguan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing P.R. China
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Ahmed SR, Koh K, Park EY, Lee J. Toxic chemical monitoring of agricultural bioproducts using nanomaterials-based sensors. KOREAN J CHEM ENG 2013. [DOI: 10.1007/s11814-013-0156-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Analytical considerations on the use of a fruit-specific and representative matrix in pesticide residue analysis by LC-ESI-MS/MS. OPEN CHEM 2013. [DOI: 10.2478/s11532-013-0247-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractOne of the quantification methods frequently applied to pesticide residue analysis in food by liquid chromatography — mass spectrometry (LC-MS) involves matrix-matched calibrations with a representative matrix used for all commodities belonging to one group. This approach, although very practical, is deemed to generate analytical errors. The effect of the application of a representative-matrix calibration curve on the pesticide quantification result was examined. Extractions of 56 pesticides from five soft fruits (strawberries, blackberries, raspberries, black currant and red currant) were carried out using QuEChERS method. Pesticide determinations were performed by LC-MS/MS in multiple reaction monitoring mode. Quantification difference functions and parameters were proposed and calculated. At the concentration of 0.05 mg kg−1 for ca. 90% of examined pesticides the quantification difference arising from the use of a representative matrix calibration curve (raspberries) instead of a specific fruit matrix calibration curve was below 20% for black and red currents, and below 30% and 35% in the case of strawberries and blackberries, respectively. The 25% difference limit was not exceeded for 51 pesticides in black and red currents, 46 pesticides in blackberries and 45 pesticides in strawberries. Quantification difference functions and parameters such as relative standard deviation of corrected process efficiencies were found to be helpful in data-driven decision-making on the applicability of a representative matrix; the former may be also used as a tool for data correction to ensure the reliability and accuracy of analyses.
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43
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Gilbert-López B, Geltenpoth H, Meyer C, Michels A, Hayen H, Molina-Díaz A, García-Reyes JF, Franzke J. Performance of dielectric barrier discharge ionization mass spectrometry for pesticide testing: a comparison with atmospheric pressure chemical ionization and electrospray ionization. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:419-429. [PMID: 23280973 DOI: 10.1002/rcm.6469] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 11/13/2012] [Accepted: 11/14/2012] [Indexed: 06/01/2023]
Abstract
RATIONALE The present study reports on the evaluation of dielectric barrier discharge microplasma ionization (DBDI) for liquid chromatography/high resolution mass spectrometry (LC/HRMS) analyses of pesticide residues in fruit and vegetables. Ionization, fragmentation, analytical performance and matrix effects displayed by LC/DBDI-MS were critically evaluated and compared with both atmospheric pressure chemical ionization (APCI) and electrospray (ESI), using a set of over 40 representative multiclass pesticides. METHODS Sample preparation was accomplished using standard QuEChERS procedure and the identification and quantitation of the pesticides tested accomplished by means of LC/MS with a hybrid linear quadrupole ion trap (LIT)-Fourier transform ion cyclotron resonance (FTICR) mass spectrometer operated in full-scan positive ion mode using DBDI, APCI and ESI sources. RESULTS The developed LC/DBDI-MS method allowed the screening of 43 pesticides in three different vegetable matrices: apple, orange and tomato. Minor matrix effects (i.e. signal suppression or enhancement ≤20%) were observed in most of the studied compounds: 95%, 70% and 81% of the studied compounds showed minor matrix effects in extracts of apple, orange and tomato, respectively. The results of the analysis of spiked orange extracts showed that the sensitivity obtained with LC/DBDI-MS is appropriate for multi-residue analysis of pesticide residues in fruit and vegetable samples. The limits of quantitation (LOQs) obtained for most of the studied pesticides were in compliance with the European Regulation 396/2005 (and subsequent updates) on food commodities (default maximum residue level of 10 µg kg(-1)). CONCLUSIONS Comparative studies with commercial sources demonstrate the suitability of DBDI as an ionization technique for residue analysis, because of the combination of the following two advantages: (1) the use of DBDI provides minimized matrix effects compared with APCI, and (2) improved the detection - in terms of sensitivity - of selected compounds that are not easily ionized by ESI, such as parathion.
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Affiliation(s)
- Bienvenida Gilbert-López
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Otto-Hahn-Str. 6b, 44227, Dortmund, Germany
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44
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Simultaneous determination of five pyrazole fungicides in cereals, vegetables and fruits using liquid chromatography/tandem mass spectrometry. J Chromatogr A 2012; 1262:98-106. [DOI: 10.1016/j.chroma.2012.08.100] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 08/29/2012] [Accepted: 08/31/2012] [Indexed: 11/20/2022]
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45
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Cao XW, Shen WJ, Zhu J, Zhang J, Jiang Y, Zhao ZY, Wu B, Yu KY, Liu H, Lian HZ, Shen CY. A Comparative Study of the Ionization Modes in GC–MS Multi-residue Method for the Determination of Organochlorine Pesticides and Polychlorinated Biphenyls in Crayfish. FOOD ANAL METHOD 2012. [DOI: 10.1007/s12161-012-9447-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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46
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Multi-residue analytical methods for the determination of pesticides and PPCPs in water by LC-MS/MS: a review. OPEN CHEM 2012. [DOI: 10.2478/s11532-012-0028-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractResidues of pesticides, pharmaceutical and personal care products (PPCPs) are contaminants of world-wide concern. Consequently, there is a growing need to develop reliable analytical methods, which enable rapid, sensitive and selective determination of these pollutants in environmental samples, at trace levels. In this paper, a review of the liquid chromatography-tandem mass spectrometry (LC-MS/MS) based methods for the determination of pesticides and PPCPs in the environment is presented. Advanced aspects of current LC-MS/MS methodology, including sample preparation and matrix effects, are discussed.
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47
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Dong F, Cheng L, Liu X, Xu J, Li J, Li Y, Kong Z, Jian Q, Zheng Y. Enantioselective analysis of triazole fungicide myclobutanil in cucumber and soil under different application modes by chiral liquid chromatography/tandem mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:1929-1936. [PMID: 22288843 DOI: 10.1021/jf204762t] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A sensitive and enantioselective method was developed and validated for the determination of myclobutanil enantiomers by chiral liquid chromatography coupled with tandem mass spectrometry. The separation and determination were performed using reversed-phase chromatography on a Chiralcel OD-RH column, with ACN-water (70/30, v/v) as the mobile phase under isocratic conditions at 0.5 mL/min flow rate. The matrix effect, linearity, precision, accuracy, and stability were evaluated. The proposed method then was successfully applied to the study of enantioselective degradation of rac-myclobutanil in cucumber and soil under different application modes. The results showed that the preferential degradation of (+)-myclobutanil resulted in an enrichment of the (-)-myclobutanil residue in plant and soil. Moreover, in cucumber, the stereoselective intensity of myclobutanil under root douche treatment was stronger than that under foliar spraying treatment, whereas in soil, the intensity was exactly opposite. The probable reasons underlying these enantioselective effects were also discussed. This study highlighted the importance of examining the fate of both enantiomers in the greenhouse system for the correct use of chiral pesticides.
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Affiliation(s)
- Fengshou Dong
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing 100193, China
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48
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Gilbert-López B, García-Reyes JF, Meyer C, Michels A, Franzke J, Molina-Díaz A, Hayen H. Simultaneous testing of multiclass organic contaminants in food and environment by liquid chromatography/dielectric barrier discharge ionization-mass spectrometry. Analyst 2012; 137:5403-10. [DOI: 10.1039/c2an35705d] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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49
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Cappiello A, Famiglini G, Palma P, Pierini E, Termopoli V, Trufelli H. Direct-EI in LC-MS: towards a universal detector for small-molecule applications. MASS SPECTROMETRY REVIEWS 2011; 30:1242-55. [PMID: 21387356 DOI: 10.1002/mas.20329] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 11/22/2010] [Accepted: 11/22/2010] [Indexed: 05/16/2023]
Abstract
This review article will give an up-to-date and exhaustive overview on the efficient use of electron ionization (EI) to couple liquid chromatography and mass spectrometry (LC-MS) with an innovative interface called Direct-EI. EI is based on the gas-phase ionization of the analytes, and it is suitable for many applications in a wide range of LC-amenable compounds. In addition, thanks to its operating principles, it prevents unwelcome matrix effects (ME). In fact, although atmospheric pressure ionization (API) methodologies have boosted the use of LC-MS, the related analytical methods are sometime affected by inaccurate quantitative results, due to unavoidable and unpredictable ME. In addition, API's soft ionization spectra always demand for costly and complex tandem mass spectrometry (MS/MS) instruments, which are essential to acquire an "information-rich" spectrum and to obtain accurate quantitative information. In EI a one-stage analyzer is sufficient for a qualitative investigation and MS/MS detection is only used to improve sensitivity and to cut chemical noise. The technology illustrated here provides a robust and straightforward access to classical, well-characterized EI data for a variety of LC applications, and readily interpretable spectra for a wide range of areas of research. The Direct-EI interface can represent the basis for a forthcoming universal LC-MS detector for small molecules.
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Affiliation(s)
- Achille Cappiello
- DiSTeVA, Università degli Studi di Urbino Carlo Bo, Piazza Rinascimento, 6, 61029 Urbino, Italy.
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Flender C, Wolf C, Leonhard P, Karas M. Nano-liquid chromatography-direct electron ionization mass spectrometry: improving performance by a new ion source adapter. JOURNAL OF MASS SPECTROMETRY : JMS 2011; 46:1004-1010. [PMID: 22012666 DOI: 10.1002/jms.1981] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A novel interface adapter has been designed to provide a new way of directly coupling a nano-liquid chromatograph to an electron ionization mass spectrometer. It connects the transfer capillary coming from the liquid chromatograph to the ionization chamber and can be easily screwed into the ion source. Liquid coming from the column passes through the heated adapter flow path and is vaporized. A continuous flow of new liquid pushes the vapor into the ionization chamber where it is ionized and continues on to the mass analyzer. The advantages of the new adapter are reduced ice formation inside the ion source and less clogging of the transfer capillary. Improvements achieved are demonstrated on the basis of caffeine and steroid analysis. The limits of detection of selected steroids are compared with and without the adapter. The adapter improves the detection limit of the system by a factor of 2 and precision from ≤15% to ≤9% relative standard deviation. No derivatization procedure is necessary before the analysis of small polar compounds. The resulting spectra are reproducible, easily interpretable, and database searchable. The new method is robust, delivers reproducible results, and provides a highly efficient alternative to existing methods in the field of pharmaceutical analysis.
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