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Li Z, Zhang X, Fu Y, Xu Y, Chen J, Lu S. Backward modeling of urinary test reliability for assessing PAH health risks: An approximation solution for naphthalene. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 273:116522. [PMID: 33493761 DOI: 10.1016/j.envpol.2021.116522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/12/2021] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
Urine sample tests are one of the most common methods of estimating human exposure to polycyclic aromatic hydrocarbons (PAHs) and assessing population health risks. To evaluate the reliability of the urine test and the impact of other PAH elimination routes on the health risk estimated by this test, we proposed a backward modeling framework integrating other common elimination routes of PAH metabolites to calculate the overall intake rate of the parent PAH based on the levels of corresponding main metabolites in urine. Due to limited biotransformation data, we selected naphthalene as an example to evaluate model performance and collected urine samples from 234 random adults in Shenzhen. The overall intake rates of naphthalene were then simulated and compared to current literature data. The simulated intake rates of naphthalene ranged from 3.70 × 10-3 mg d-1 to 1.95 mg d-1 and followed a lognormal distribution with a median value of 6.51 × 10-2 mg d-1. The results indicated that, if naphthalene exposure occurred only via food for the population of Shenzhen, the literature data fell within the most frequent interval [3.70 × 10-3, 4.45 × 10-2] but were lower than the simulated median value. However, if other exposure routes were considered, the allocation factor-adjusted literature data were close to the simulated median values. In addition, under normal physiological conditions, the simulated results were more sensitive to 1-hydroxynaphthalene (1-OHN) and 2-hydroxynaphthalene (2-OHN) levels in urine than other biometric variables, which is due to the limited load of 1-OHN and 2-OHN in human elimination routes. Furthermore, the suggested safety levels of 1-OHN and 2-OHN in urine to protect 99% of the general population of Shenzhen were 6.40 × 10-6 and 3.75 × 10-5 mg L-1, which could be used as regulatory indicators based on the high reliability of the model.
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Affiliation(s)
- Zijian Li
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangdong, China
| | - Xiaoyu Zhang
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangdong, China
| | - Yisha Fu
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangdong, China
| | - Yupeng Xu
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangdong, China
| | - Jinru Chen
- Songgang Preventive Health Center of Baoan District, Guangdong, China
| | - Shaoyou Lu
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangdong, China.
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An N, Zhu QF, Yu L, Chen YT, Chen SL, Feng YQ. Derivatization assisted LC-p-MRM-MS with high CID voltage for rapid analysis of brassinosteroids. Talanta 2020; 217:121058. [PMID: 32498827 DOI: 10.1016/j.talanta.2020.121058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 04/11/2020] [Accepted: 04/16/2020] [Indexed: 11/28/2022]
Abstract
In this study, a derivatization-assisted pseudo-multiple reaction monitoring with high CID voltage (HV-p-MRM) strategy was proposed for the analysis of brassinosteroids (BRs) by liquid chromatography-triple quadrupole mass spectrometry (LC-QqQ MS). The concept of the HV-p-MRM strategy was proposed on the basis of an assumption that the precursor ion of analyte is stable in collision cell and less prone to fragmentation at high CID voltage, while co-existing ions (impurity) of easy fragmentation can break down into smaller fragment ions. In such case, by increasing the CID voltage, the co-existing ions that are introduced due to the low resolution of the quadrupole 1 (Q1) can be filtered out by quadrupole 3 (Q3), while the stable precursor ion of analyte will pass through Q3, thereby that the signal-to-noise ratio (S/N) of the analysis can be improved. As a proof-of-concept study, BRs were derivatized with rhodamine B-boronic acid (RhB-BA) and then the derivatives were used to investigate their variations in MS signal, background noise, and S/N upon the CID voltage and MS scanning resolution. The results showed that S/N of these derivatives can be improved in HV-p-MRM mode. To further demonstrate the feasibility of HV-p-MRM strategy, a RhB-BA derivatization assisted LC-HV-p-MRM-MS method was developed for the analysis of BRs. Using this method, rapid and sensitive determination of BRs in different organs of rape flower was achieved. It can be expected that HV-p-MRM may be suitable for the analytes that are stable or can be converted into compounds of high stability in collision cell at high CID voltage.
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Affiliation(s)
- Na An
- Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Quan-Fei Zhu
- Department of Chemistry, Wuhan University, Wuhan, 430072, PR China; Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430072, PR China
| | - Lei Yu
- Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Yong-Ting Chen
- Hubei Electrochemical Power Sources Key Laboratory, Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Sheng-Li Chen
- Hubei Electrochemical Power Sources Key Laboratory, Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Yu-Qi Feng
- Department of Chemistry, Wuhan University, Wuhan, 430072, PR China; Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430072, PR China.
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Poli D, Andreoli R, Moscato L, Pelà G, de Palma G, Cavallo D, Petyx M, Pelosi G, Corradi M, Goldoni M. The Relationship Between Widespread Pollution Exposure and Oxidized Products of Nucleic Acids in Seminal Plasma and Urine in Males Attending a Fertility Center. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17061880. [PMID: 32183208 PMCID: PMC7143937 DOI: 10.3390/ijerph17061880] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 12/17/2022]
Abstract
Background: In recent decades, there has been an increase in male infertility, and in many cases, the etiology remains unclear. Several studies relate male hypo-fertility to xenobiotic exposure, even if no data exist about multiple exposure at the environmental level. Methods: The study involved 86 males with diagnosis of idiopathic male infertility (IMI), and 46 controls with no alteration in sperm characteristics. Seminal plasma (SP) and urine samples were analyzed by liquid chromatography tandem mass spectrometry (LC-MS/MS) to quantify biomarkers of exposure (the main metabolites of benzene, toluene, 1,3-butadiene, 3-monochloropropanediol, styrene, and naphthol) and effect (oxidized products of nucleic acids).Results: Biomarker concentrations were similar in subjects with IMI and controls even if a stronger correlation between biomarkers of exposure and effects were observed in SP. Data show that, both in SP and urine, most metabolites were inter-correlated, indicating a simultaneous co-exposure to the selected substances at the environmental level. Principal component analysis showed in SP the clustering of mercapturic acids indicating a preferential metabolic pathway with Glutathione (GSH) depletion and, consequently, an increase of oxidative stress. This result was also confirmed by multivariable analysis through the development of explanatory models for oxidized products of nucleic acids. Conclusions: This study highlights how oxidative stress on the male reproductive tract can be associated with a different representation of metabolic pathways making the reproductive tract itself a target organ for different environmental pollutants. Our results demonstrate that SP is a suitable matrix to assess the exposure and evaluate the effects of reproductive toxicants in environmental/occupational medicine. The statistical approach proposed in this work represents a model appropriate to study the relationship between multiple exposure and effect, applicable even to a wider variety of chemicals.
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Affiliation(s)
- Diana Poli
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL Research, Via Fontana Candida1, 00078 Monte Porzio Catone, Rome, Italy; (D.P.); (D.C.); (M.P.)
| | - Roberta Andreoli
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126 Parma, Italy; (R.A.); (G.P.); (M.C.)
- Centre for Research in Toxicology (CERT), University of Parma, via A. Gramsci 14, 43126 Parma, Italy
| | - Lucia Moscato
- Center of Reproductive Infertility (CIR), University Hospital of Parma, via A. Gramsci 14, 43126 Parma, Italy;
| | - Giovanna Pelà
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126 Parma, Italy; (R.A.); (G.P.); (M.C.)
- University Hospital of Parma, via A. Gramsci 14, 43126 Parma, Italy
| | - Giuseppe de Palma
- Department of Medicine, Surgery, Radiological Sciences, Public Health and Human Sciences Unit, University of Brescia, 25121 Brescia, Italy;
| | - Delia Cavallo
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL Research, Via Fontana Candida1, 00078 Monte Porzio Catone, Rome, Italy; (D.P.); (D.C.); (M.P.)
| | - Marta Petyx
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL Research, Via Fontana Candida1, 00078 Monte Porzio Catone, Rome, Italy; (D.P.); (D.C.); (M.P.)
| | - Giorgio Pelosi
- Centre for Research in Toxicology (CERT), University of Parma, via A. Gramsci 14, 43126 Parma, Italy
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/a, 43124 Parma, Italy;
| | - Massimo Corradi
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126 Parma, Italy; (R.A.); (G.P.); (M.C.)
- Centre for Research in Toxicology (CERT), University of Parma, via A. Gramsci 14, 43126 Parma, Italy
- University Hospital of Parma, via A. Gramsci 14, 43126 Parma, Italy
| | - Matteo Goldoni
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126 Parma, Italy; (R.A.); (G.P.); (M.C.)
- Centre for Research in Toxicology (CERT), University of Parma, via A. Gramsci 14, 43126 Parma, Italy
- Correspondence:
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Zhao Q, Li GL, Ning YF, Zhou T, Mei Y, Guo ZZ, Feng YQ. Rapid magnetic solid-phase extraction based on magnetic graphitized carbon black for the determination of 1-naphthol and 2-naphthol in urine. Microchem J 2019. [DOI: 10.1016/j.microc.2019.03.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Ghosh M, Ta S, Lohar S, Das S, Brandão P, Felix V, Das D. Exploring aggregation-induced emission through tuning of ligand structure for picomolar detection of pyrene. J Mol Recognit 2018; 32:e2771. [PMID: 30515937 DOI: 10.1002/jmr.2771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/09/2018] [Accepted: 10/26/2018] [Indexed: 11/09/2022]
Abstract
Tuning of ligand structures through controlled variation of ring number in fused-ring aromatic moiety appended to antipyrine allows detection of 7.8 × 10-12 M pyrene via aggregation-induced emission (AIE) associated with 101-fold fluorescence enhancement. In one case, antipyrine unit is replaced by pyridine to derive bis-methylanthracenyl picolyl amine. The structures of four molecules have been confirmed by single crystal X-ray diffraction analysis. Among them, pyrene-antipyrine conjugate (L) undergoes pyrene triggered inhibition of photo-induced electron transfer (PET) leading to water-assisted AIE.
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Affiliation(s)
- Milan Ghosh
- Department of Chemistry, The University of Burdwan, Bardhaman, India
| | - Sabyasachi Ta
- Department of Chemistry, The University of Burdwan, Bardhaman, India
| | - Sisir Lohar
- Department of Chemistry, T. D. B. College, Raniganj, Bardhaman, India
| | - Sudipta Das
- Department of Chemistry, Raina Swami Bholananda Vidyayatan, Bardhaman, India
| | - Paula Brandão
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Vitor Felix
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Debasis Das
- Department of Chemistry, The University of Burdwan, Bardhaman, India
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Nandi S, Adhikari S, Mandal S, Banerjee A, Das D. Tuning FRET efficiency as a novel approach for improved detection of naphthalene: application to environmental samples. J Mol Recognit 2016; 29:303-7. [DOI: 10.1002/jmr.2531] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 11/25/2015] [Accepted: 12/04/2015] [Indexed: 01/12/2023]
Affiliation(s)
- Sandip Nandi
- Department of Chemistry; The University of Burdwan; Golapbag Burdwan India
| | - Sangita Adhikari
- Department of Chemistry; The University of Burdwan; Golapbag Burdwan India
| | - Sandip Mandal
- Department of Chemistry; The University of Burdwan; Golapbag Burdwan India
| | - Arnab Banerjee
- Department of Chemistry & Biochemistry; The University of Texas at Austin; Austin TX USA
| | - Debasis Das
- Department of Chemistry; The University of Burdwan; Golapbag Burdwan India
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Li L, Liu E, Wang X, Chen J, Zhang X. Simultaneous determination of naphthol isomers at poly(3-methylthiophene)-nano-Au modified electrode with the enhancement of surfactant. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 53:36-42. [DOI: 10.1016/j.msec.2015.04.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 03/10/2015] [Accepted: 04/10/2015] [Indexed: 10/23/2022]
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8
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Zhu L, Xu H. Magnetic graphene oxide as adsorbent for the determination of polycyclic aromatic hydrocarbon metabolites in human urine. J Sep Sci 2014; 37:2591-8. [DOI: 10.1002/jssc.201400363] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/19/2014] [Accepted: 06/22/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Linli Zhu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, Institute of Environmental Chemistry, College of Chemistry; Central China Normal University; Wuhan China
| | - Hui Xu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, Institute of Environmental Chemistry, College of Chemistry; Central China Normal University; Wuhan China
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Sette CB, Pedrete TDA, Felizzola J, Nudi AH, Scofield ADL, Wagener ADLR. Formation and identification of PAHs metabolites in marine organisms. MARINE ENVIRONMENTAL RESEARCH 2013; 91:2-13. [PMID: 23518369 DOI: 10.1016/j.marenvres.2013.02.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 01/22/2013] [Accepted: 02/18/2013] [Indexed: 06/01/2023]
Abstract
In this study, the development of the technique APCI(+) LC/MS/MS allowed the detection of phenanthrene, pyrene and metabolites of alkyl homologs in fish bile (in situ) and in urine of crabs. Laboratory experiments were carried out exposing crabs from an unpolluted mangrove (Barra de Guaratiba) to phenanthrene, and to the alkylated homologs 1-methyl phenanthrene and 2,6,9-trimethyl phenanthrene. Urine samples were collected at 0, 24, 48, 72, and 96 h. Fishes were captured from strategic sites from Guanabara Bay. Hydroxylated metabolites of phenanthrene, epoxides, orthoquinone and glucoside conjugates were identified in both samples. The method APCI(+) LC/MS/MS showed to be effective in a preliminary assessment of phenanthrene metabolite formation, although the low concentrations of 1-methyl phenanthene and 2,6,9-trimethyl phenanthrene did not allow a systematic evaluation of data. The method, however, proved to be excellent tool for studies of PAHs metabolites due to the high selectivity, sensitivity and separation attained.
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Affiliation(s)
- Carla B Sette
- LABMAM - Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rua Marquês de São Vicente 225, 22543-900 Rio de Janeiro, Brazil.
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Liang G, Liu X, Li X. Highly sensitive detection of α-naphthol based on G-DNA modified gold electrode by electrochemical impedance spectroscopy. Biosens Bioelectron 2013; 45:46-51. [PMID: 23454342 DOI: 10.1016/j.bios.2013.01.046] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 01/17/2013] [Accepted: 01/18/2013] [Indexed: 12/15/2022]
Abstract
A highly sensitive, reusable G-rich DNA sensor was reported for the detection of α-naphthol by electrochemical impedance spectroscopy (EIS). Specifically, a single-stranded G-rich DNA was self-assembled on the electrode and transformed into K(+)-stabilized G-quadruplex, which could catalyze H2O2-mediated oxidation of α-naphthol (with hemin as a cofactor) to 1, 4-naphthoquinone precipitated on the DNA films. Due to the insolubility of 1, 4-naphthoquinone, the charge transfer resistance (RCT) was increased to maximum within 15 min. Depending on the difference in charge transfer resistance change (ΔRCT), the α-naphthol could be detected with the detection limit of 0.1 nM in Tris-ClO4 buffer solution (20mM, pH=7.4). Moreover, the sensor demonstrated a high selectivity over other selected phenolic compounds. The performance of the sensor in the real lake water was also explored with the detection limit of 0.8 nM. Finally, the regeneration of the sensor was investigated, which allowed for reuse more than 4 cycles with a mean recovery of 94% of the original signal.
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Affiliation(s)
- Gang Liang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China
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11
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Zhu G, Gai P, Yang Y, Zhang X, Chen J. Electrochemical sensor for naphthols based on gold nanoparticles/hollow nitrogen-doped carbon microsphere hybrids functionalized with SH-β-cyclodextrin. Anal Chim Acta 2012; 723:33-8. [DOI: 10.1016/j.aca.2012.02.034] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 02/14/2012] [Accepted: 02/19/2012] [Indexed: 11/16/2022]
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12
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Zhu G, Gai P, Wu L, Zhang J, Zhang X, Chen J. β-Cyclodextrin-Platinum Nanoparticles/Graphene Nanohybrids: Enhanced Sensitivity for Electrochemical Detection of Naphthol Isomers. Chem Asian J 2012; 7:732-7. [DOI: 10.1002/asia.201100839] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Indexed: 11/09/2022]
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13
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Determination of volatile organic compounds in water by headspace solid-phase microextraction gas chromatography coupled to tandem mass spectrometry with triple quadrupole analyzer. Anal Chim Acta 2011; 704:87-97. [DOI: 10.1016/j.aca.2011.08.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/22/2011] [Accepted: 08/05/2011] [Indexed: 11/23/2022]
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14
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Skhirtladze A, Perrone A, Montoro P, Benidze M, Kemertelidze E, Pizza C, Piacente S. Steroidal saponins from Yucca gloriosa L. rhizomes: LC-MS profiling, isolation and quantitative determination. PHYTOCHEMISTRY 2011; 72:126-135. [PMID: 21094503 DOI: 10.1016/j.phytochem.2010.10.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 10/18/2010] [Accepted: 10/19/2010] [Indexed: 05/30/2023]
Abstract
The occurrence of steroidal saponins in the rhizomes of Yucca gloriosa has been detected by LC-MS. On the basis of the LC-MS analysis, five steroidal glycosides, including three spirostane, one furostane and one cholestane glycosides, along with seven known compounds have been isolated and characterized by ESI-MS and by the extensive use of 1D- and 2D-NMR experiments. Quantitative analysis of the steroidal glycosides in Y. gloriosa rhizomes was performed by an LC-MS method validated according to European Medicines Agency (EMEA) guidelines. The dried BuOH extract obtained from rhizomes contains more than 25% w/w of glycosides, thus Y. gloriosa rhizomes can be considered a rich source of steroidal glycosides.
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Beyer J, Jonsson G, Porte C, Krahn MM, Ariese F. Analytical methods for determining metabolites of polycyclic aromatic hydrocarbon (PAH) pollutants in fish bile: A review. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2010; 30:224-44. [PMID: 21787655 DOI: 10.1016/j.etap.2010.08.004] [Citation(s) in RCA: 165] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2010] [Accepted: 08/22/2010] [Indexed: 05/03/2023]
Abstract
The determination of polycyclic aromatic hydrocarbon (PAH) metabolites in bile can serve as a tool for assessing environmental PAH exposure in fish. Biliary PAH metabolite levels can be measured using several analytical methods, including simple fluorescence assays (fixed fluorescence detection or synchronous fluorescence spectrometry); high-performance liquid chromatography with fluorescence detection (HPLC-F); gas chromatography-mass spectrometry (GC-MS) after deconjugation, extraction and derivatization of the bile sample, and finally by advanced liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS) methods. The method alternatives are highly different both with regard to their analytical performance towards different PAH metabolite structures as well as in general technical demands and their suitability for different monitoring strategies. In the present review, the state-of-the-art for these different analytical methods is presented and the advantages and limitations of each approach as well as aspects related to analytical quality control and inter-laboratory comparability of data and availability of certified reference materials are discussed.
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Affiliation(s)
- Jonny Beyer
- IRIS - International Research Institute of Stavanger, N-4068 Stavanger, Norway; University of Stavanger, N-4036 Stavanger, Norway
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Pan L, Guo Y, Li Z, Chen J, Jiang T, Yu Y. Simultaneous Determination of Levodopa, Benserazide and 3-O-Methyldopa in Human Serum by LC–MS–MS. Chromatographia 2010. [DOI: 10.1365/s10337-010-1683-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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Amperometric Immunosensor Based on Layer-by-layer Assembly of Thiourea and Nano-gold Particles on Gold Electrode for Determination of Naphthalene. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2010. [DOI: 10.3724/sp.j.1096.2010.00153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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ZHANG Y, ZHUANG HS. Amperometric Immunosensor Based on Layer-by-layer Assembly of Thiourea and Nano-gold Particles on Gold Electrode for Determination of Naphthalene. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2010. [DOI: 10.1016/s1872-2040(09)60021-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Poly (acridine orange) film modified electrode for the determination 1-naphthol in the presence of 2-naphthol. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.07.067] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zhou C, Wang QE, Gao SS, Zhuang HS. Determination of naphthalene by competitive fluorescence immunoassay. ENVIRONMENTAL MONITORING AND ASSESSMENT 2009; 154:233-239. [PMID: 18553145 DOI: 10.1007/s10661-008-0391-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2007] [Accepted: 05/05/2008] [Indexed: 05/26/2023]
Abstract
A reliable and sensitive competitive fluorescence immunoassay for the quantitative determination of naphthalene (NA) was developed. 2-naphthoxy acetic acid (NAA) was selected as the hapten of naphthalene. Active ester method (AEM) was used to couple the NAA to carrier proteins (bovine serum albumin) to form artificial immune antigen. Male New Zealand white rabbits were immunized with this antigen to obtain polyclonal antibodies, with which, a novel fluorescence immunoassay for detection of NA was described. Under best conditions, NA can be determined in the concentration range of 0.1-100 microg/L with a detection limit of 0.05 microg/L. The cross-reactivities of the anti-NA antibody to seven structurally related compounds were below 15%. Some environmental samples were analyzed with satisfactory results. It shows a good accuracy and suitability to analyze NA in environmental water.
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Affiliation(s)
- Chun Zhou
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
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Haug LS, Thomsen C, Becher G. A sensitive method for determination of a broad range of perfluorinated compounds in serum suitable for large-scale human biomonitoring. J Chromatogr A 2009; 1216:385-93. [DOI: 10.1016/j.chroma.2008.10.113] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Revised: 10/23/2008] [Accepted: 10/29/2008] [Indexed: 10/21/2022]
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Yang H, Wang Y, Wang Y, Li J, Xiao X, Tan X. Study on the interaction among pyronine Y, potassium bromate and naphthols by absorption, three-dimension fluorescence and resonance light scattering spectra and their application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 71:1290-1295. [PMID: 18499514 DOI: 10.1016/j.saa.2008.03.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Revised: 03/13/2008] [Accepted: 03/18/2008] [Indexed: 05/26/2023]
Abstract
A novel method for the determination of trace naphthols was proposed based on naphthols, potassium bromate and pyronine Y in dilute sulfuric acid medium can react to form ion-association complexes, which not only resulted in the changes of the three-dimension fluorescence spectra, absorption spectra and the quenching of fluorescence, but also resulted in the great enhancement of resonance light scattering (RLS). The characteristics of RLS spectra, the effective factors and optimum conditions of reaction were studied. It was found that the enhanced intensity of RLS at 396 nm was proportional to the concentration of 1-naphthol and 2-naphthol in the range of 41.4 approximately 3024 ng mL(-1) and 38.3 approximately 3068 ng mL(-1), respectively. The urine samples analysis of the relative standard deviation was 3.1-7.1% and the average recovery was 96.0% (n=6). The present method had been applied to the determination of trace naphthols in human urine, the obtained results were in good agreement with those obtained by the HPLC method; moreover, we had carried on an initial study of the reaction mechanism in terms of spectral characteristics.
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Affiliation(s)
- Hongmei Yang
- College of Public Health, University of South China, West Changsheng Road 28#, Hengyang 421001, PR China
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23
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Ye Q, Zhuang H, Zhou C. Detection of naphthalene by real-time immuno-PCR using molecular beacon. Mol Cell Probes 2008; 23:29-34. [PMID: 19028563 DOI: 10.1016/j.mcp.2008.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Revised: 10/22/2008] [Accepted: 10/22/2008] [Indexed: 10/21/2022]
Abstract
A rapid and quantitative technique is urgently needed in detecting toxicological and carcinogenic polycyclic aromatic hydrocarbons (PAHs) in the environment. Using a molecular beacon (MB), this study aimed at detecting the presence of naphthalene through an assay developed via a highly sensitive and robust, real-time fluorescent quantitative immuno-PCR (FQ-IPCR), which was then performed on serial dilutions of known naphthalene concentrations equivalent to 10-fold dilutions of 1-10(4) fg/mL. A correlation coefficient of 0.996 was identified, and a linear relationship between 1 fg/mL and 10 pg/mL, with y = 1.392x + 11.188, was obtained. A trace amount (1 fg/mL) of naphthalene congeners could be detected using this method. Five water samples were then used for validation, the results of which were further confirmed through a conventional enzyme-linked immuno sorbent assay (ELISA). Based on sensitivity and reproduction, the MB-based FQ-IPCR technique is a promising tool for monitoring environmental endocrine disruptors.
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Affiliation(s)
- Qiyan Ye
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
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24
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Naphthalin/Naphthole und Human- Biomonitoring. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2007; 50:1357-64. [DOI: 10.1007/s00103-007-0342-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Rodil R, Quintana JB, Reemtsma T. Liquid Chromatography−Tandem Mass Spectrometry Determination of Nonionic Organophosphorus Flame Retardants and Plasticizers in Wastewater Samples. Anal Chem 2005; 77:3083-9. [PMID: 15889896 DOI: 10.1021/ac048247s] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A comprehensive method for the determination of nonionic organophosphorus flame retardants/plasticizers in wastewater samples by solid-phase extraction (SPE) with liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) is presented. It allows the determination of 11 organophosphorus compounds, trialkyl and trichloralkyl phosphates, triaryl phosphate, and biphosphates together with triphenylphosphine oxide (TPPO). Limits of quantification after SPE of 100 mL of water are between 3 and 80 ng/L, which are adequate for most aqueous samples. The sensitivity of the LC-ESI-MS approach allows direct injection of aqueous sample without preceding extraction for concentrations in the low microg/L range. The method was finally applied to municipal wastewater samples, showing the occurrence of six phosphoric acid triesters and TPPO in both raw and treated municipal wastewaters.
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Affiliation(s)
- Rosario Rodil
- Departamento de Química Analítica, Nutrición e Bromatoloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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26
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Rappaport SM, Waidyanatha S, Serdar B. Naphthalene and its biomarkers as measures of occupational exposure to polycyclic aromatic hydrocarbons. ACTA ACUST UNITED AC 2004; 6:413-6. [PMID: 15152308 DOI: 10.1039/b314088c] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polycyclic aromatic hydrocarbons (PAH) include compounds with two or more fused benzene rings, many of which are carcinogens. Industrial sources produce hundreds of PAH, notably in the coke- and aluminium-producing industries. Because PAH are distributed at varying levels between gaseous and particulate phases, exposure assessment has been problematic. Here, we recommend that occupational exposures to naphthalene be considered as a potential surrogate for occupational PAH exposure for three reasons. Naphthalene is usually the most abundant PAH in a given workplace; naphthalene is present almost entirely in the gaseous phase and is, therefore, easily measured; and naphthalene offers several useful biomarkers, including the urinary metabolites 1- and 2-hydroxynaphthalene. These biomarkers can be used to evaluate total-body exposure to PAH, in much the same way that 1-hydroxypyrene has been applied. Using data from published sources, we show that log-transformed airborne levels of naphthalene are highly correlated with those of total PAH (minus naphthalene) in several industries (creosote impregnation: Pearson r= 0.815, coke production: r= 0.917, iron foundry: r= 0.854, aluminium production: r= 0.933). Furthermore, the slopes of the log-log regressions are close to one indicating that naphthalene levels are proportional to those of total PAH in those industries. We also demonstrate that log-transformed urinary levels of the hydroxynaphthalenes are highly correlated with those of 1-hydroxypyrene among coke oven workers and controls (r= 0.857 and 0.876), again with slopes of log-log regressions close to one. These results support the conjecture that naphthalene is a useful metric for occupational PAH exposure. Since naphthalene has also been shown to be a respiratory carcinogen in several animal studies, it is also argued that naphthalene exposures should be monitored per se in industries with high levels of PAH.
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Affiliation(s)
- Stephen M Rappaport
- Department of Environmental Sciences and Engineering, School of Public Health, CB# 7431, University of North Carolina, Chapel Hill, NC 27599-7431, USA.
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27
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Elovaara E, Väänänen V, Mikkola J. Simultaneous analysis of naphthols, phenanthrols, and 1-hydroxypyrene in urine as biomarkers of polycyclic aromatic hydrocarbon exposure: intraindividual variance in the urinary metabolite excretion profiles caused by intervention with beta-naphthoflavone induction in the rat. Arch Toxicol 2003; 77:183-93. [PMID: 12698233 DOI: 10.1007/s00204-003-0436-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2002] [Accepted: 12/05/2002] [Indexed: 11/28/2022]
Abstract
Two fluorimetric HPLC methods are described for the quantification of naphthols, phenanthrols and 1-hydroxypyrene (1-OHP) in urine specimens obtained from male Wistar rats exposed to naphthalene, phenanthrene and pyrene. The polycyclic aromatic hydrocarbons (PAHs) were given intraperitoneally, either alone (1.0 mmol/kg body weight) or as an equimolar mixture (0.33 mmol/kg), using the same dosages for repeated treatments on week 1 and week 2. Between these treatments, PAH-metabolizing activities encoded by aryl hydrocarbon (Ah) receptor-controlled genes were induced in the rats with beta-naphthoflavone (betaNF). Chromatographic separation of five phenanthrols (1-, 2-, 3-, 4-, and 9-isomers) was accomplished using two different RP C-18 columns. Despite selective detection (programmable wavelengths), the quantification limits in the urine ranged widely: 1-OHP (0.18 microg/l) <phenanthrols (0.34-0.45 microg/l) <2-naphthol (1.5 microg/l) <1-naphthol (4 micro g/l). The relative standard deviation of the methods was good, as also was the reproducibility. The molar fraction of the dose excreted in 24-h urine as naphthols (<or=4.0%), phenanthrols (<or=1.1%), and 1-OHP (<or=2.4%) was low. Urinary disposition increased differentially in betaNF-induced rats: naphthols, 9-phenanthrol (1- to-2-fold); 2-, 3-, and 4-phenanthrols (4- to 5-fold); 1-phenanthrol and 1-OHP (over 11-fold). The OH-metabolites were analyzed before and after enzymatic hydrolysis (beta-glucuronidase/arylsulfatase). The percentage excreted as a free phenol in urine varied for 1-OHP (2-11%), 1-naphthol (36-51%), 2-naphthol (59-65%), and the phenanthrols (29-94%). 1-Naphthyl- and 1-pyrenyl beta- d-glucuronide served as measures for the completeness of enzymatic hydrolysis. Characteristic differences observed in the urinary disposition of naphthalene, phenanthrene, and pyrene are described, as well as important factors (dose, metabolic capacity, relative urinary output) associated with biomarker validation. This intervention study clarifies intraindividual variation in PAH metabolism and provides useful information for the development of new methods applicable in the biomonitoring of PAH exposure in humans.
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Affiliation(s)
- Eivor Elovaara
- Laboratory of Toxicokinetics and Metabolism, Department of Industrial Hygiene and Toxicology, Finnish Institute of Occupational Health, 00250, Helsinki, Finland.
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28
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Hecht SS. Human urinary carcinogen metabolites: biomarkers for investigating tobacco and cancer. Carcinogenesis 2002; 23:907-22. [PMID: 12082012 DOI: 10.1093/carcin/23.6.907] [Citation(s) in RCA: 288] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Measurement of human urinary carcinogen metabolites is a practical approach for obtaining important information about tobacco and cancer. This review presents currently available methods and evaluates their utility. Carcinogens and their metabolites and related compounds that have been quantified in the urine of smokers or non-smokers exposed to environmental tobacco smoke (ETS) include trans,trans-muconic acid (tt-MA) and S-phenylmercapturic acid (metabolites of benzene), 1- and 2-naphthol, hydroxyphenanthrenes and phenanthrene dihydrodiols, 1-hydroxypyrene (1-HOP), metabolites of benzo[a]pyrene, aromatic amines and heterocyclic aromatic amines, N-nitrosoproline, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol and its glucuronides (NNAL and NNAL-Gluc), 8-oxodeoxyguanosine, thioethers, mercapturic acids, and alkyladenines. Nitrosamines and their metabolites have also been quantified in the urine of smokeless tobacco users. The utility of these assays to provide information about carcinogen dose, delineation of exposed vs. non-exposed individuals, and carcinogen metabolism in humans is discussed. NNAL and NNAL-Gluc are exceptionally useful biomarkers because they are derived from a carcinogen- 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK)- that is specific to tobacco products. The NNAL assay has high sensitivity and specificity, which are particularly important for studies on ETS exposure. Other useful assays that have been widely applied involve quantitation of 1-HOP and tt-MA. Urinary carcinogen metabolite biomarkers will be critical components of future studies on tobacco and human cancer, particularly with respect to new tobacco products and strategies for harm reduction, the role of metabolic polymorphisms in cancer, and further evaluation of human carcinogen exposure from ETS.
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Affiliation(s)
- Stephen S Hecht
- University of Minnesota Cancer Center, Minneapolis, MN 55455, USA
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Hernández F, Sancho JV, Pozo O, Lara A, Pitarch E. Rapid direct determination of pesticides and metabolites in environmental water samples at sub-microg/l level by on-line solid-phase extraction-liquid chromatography-electrospray tandem mass spectrometry. J Chromatogr A 2001; 939:1-11. [PMID: 11806539 DOI: 10.1016/s0021-9673(01)01334-6] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A very rapid, multi-residual, sensitive and specific procedure for determining 35 pesticides in environmental ground and surface water in proposed. It is based on the use of solid-phase extraction (SPE) combined on-line with liquid chromatography (LC) electrospray (ESI) tandem mass spectrometry (MS-MS). Simultaneous target analysis of 29 pesticides (1 fungicide, 16 insecticides, 10 herbicides and 2 acaricides) and 6 metabolites with positive or negative ionization was reached by the direct injection of only 1.3 ml of filtered water sample, with a total analysis time of 18 min. The SPE-LC-MS-MS method was validated, obtaining good results for all compounds at 0.5 and 0.1 microg/l. Most of them could be correctly quantified at a concentration level as low as 25 ng/l. Efficiency and applicability of this method was evaluated by the analysis of several samples included in a monitoring program.
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Affiliation(s)
- F Hernández
- Analytical Chemistry, Experimental Sciences Department, University Jaume I, Castellón, Spain.
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30
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Pozo O, Pitarch E, Sancho JV, Hernández F. Determination of the herbicide 4-chloro-2-methylphenoxyacetic acid and its main metabolite, 4-chloro-2-methylphenol in water and soil by liquid chromatography-electrospray tandem mass spectrometry. J Chromatogr A 2001; 923:75-85. [PMID: 11510563 DOI: 10.1016/s0021-9673(01)01006-8] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A rapid and sensitive LC-electrospray tandem mass spectrometry method has been developed for the quantitation of 4-chloro-2-methylphenoxyacetic acid (MCPA) and 4-chloro-2-methylphenol in both water and soil samples. Soil samples were extracted in alkaline media and cleaned-up by solid-phase extraction with C18 cartridges before LC-MS analysis. The selectivity and sensitivity offered by the triple quadrupole allowed the direct injection of the water samples rendering a sample throughput of around 100 samples per day, without any sample pretreatment, rendering for MCPA a limit of detection of 40 ng/l. In order to increase the method sensitivity, mainly for metabolite, a previous solid-phase extraction step was also performed. The method was validated by means of recovery experiments using fortified water and soil samples, obtaining satisfactory recoveries for both compounds in water and for MCPA in soil. The validated procedures can be used for the specific monitoring of residues of MCPA and its main metabolite in environmental samples, as ground and surface waters and soils, providing more selectivity and sensitivity than the current UV-based methodology. Besides, sample manipulation is greatly reduced in comparison to other GC-MS based methods which require a previous derivatization.
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Affiliation(s)
- O Pozo
- Experimental Sciences Department, University Jaume 1, Castellón, Spain
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31
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Affiliation(s)
- S D Richardson
- National Exposure Research Laboratory, U.S. Environmental Protection Agency, Athens, Georgia 30605, USA
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32
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Chapter 4 Polycyclic aromatic hydrocarbon (PAH) metabolites. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s1567-7192(01)80007-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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33
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Affiliation(s)
- S D Richardson
- National Exposure Research Laboratory, U.S. Environmental Protection Agency, Athens, Georgia 30605, USA
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34
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Sancho JV, Pozo OJ, Hernández F. Direct determination of chlorpyrifos and its main metabolite 3,5, 6-trichloro-2-pyridinol in human serum and urine by coupled-column liquid chromatography/electrospray-tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2000; 14:1485-1490. [PMID: 10931542 DOI: 10.1002/1097-0231(20000830)14:16<1485::aid-rcm51>3.0.co;2-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A rapid and sensitive automated coupled-column liquid chromatography/electrospray tandem mass spectrometry (LC/LC/ES-MS/MS) method has been developed for the quantitation of chlorpyrifos and 3,5,6-trichloro-2-pyridinol (TCP) in both human serum and urine. Human serum was first protein precipitated with acetonitrile, while urine was directly injected into the coupled-column system. A 10 microL aliquot was then analyzed using as first separation column a Discovery C18 5 microm 50 x 2.1 mm; the fraction containing the analyte was transferred on-line to the second column consisting of a ABZ+ 5 microm 100 x 2.1 mm, which was connected to the electrospray source (Z-spray) of a Quattro LC triple-quadrupole instrument. Chlorpyrifos was detected in positive ion mode using four multi reaction monitoring (MRM) transitions while TCP was measured in negative ion mode using three pseudo-MRM transitions. The clean-up performed by the coupled-column approach avoids the use of an internal standard for the correct quantitation of both analytes, and the highly automated procedure renders a sample throughput of more than 100 samples per day. Both compounds can be determined using the same set-up, the only difference in the procedure being the composition of the first mobile phase. The method has proved to be fast, reliable and sensitive, yielding calibration curves for both analytes with correlation coefficients greater than 0.9995. The repeatability and reproducibility at 5 and 50 ng/mL was lower than 8%. The accuracy and precision were evaluated by means of recovery experiments from fortified serum (5-50 ng/mL) and urine (1-10 ng/mL) samples, obtaining satisfactory recoveries for both compounds (87-113% in serum, and 98-109% in urine), with coefficients of variation (CVs) less than 10%. The detection limits were similar for chlorpyrifos and metabolite: 1.5 ng/mL in serum, and 0.5 ng/mL in urine, where no sample handling took place. The validated procedures provide excellent tools for the specific assessment of occupational exposure to the organophosphorus pesticide chlorpyrifos, throughout the analysis of both human serum and urine, and it is more selective and sensitive than the current assay based on the measurement of the decrease in the cholinesterase activity.
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Affiliation(s)
- J V Sancho
- Analytical Chemistry, Experimental Sciences Department, ESTCE, University Jaume I, E-12071 Castellón, Spain
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