Abstract
We developed a rapid and sensitive liquid chromatography/time-of-flight mass spectrometry (LC/TOF–MS) method using atmospheric pressure photoionization (APPI) for the determination of paraquat and diquat in human serum. Serum samples were extracted with aqueous formic acid and acetonitrile. After vortexing and centrifugation, the supernatants were filtered with ultrafiltration cartridges followed by APPI-LC/TOF–MS analysis using a hydrophilic interaction chromatography analytical column. The total amount of time required for analyzing serum samples was ≤20 min. Calibration curves using solvent standards were linear in the range of 0.0005–1.25 μg/ml. The intraday recoveries (n = 6) for paraquat and diquat added to human serum at 0.1 μg/ml were 99.0 and 91.9 %, respectively, with relative standard deviations of 5.8 and 6.5 %. The limits of detection calculated at a signal-to-noise ratio of 3 were 0.005 μg/ml for paraquat and 0.006 μg/ml for diquat. This method was applied in the analysis of four autopsy cases involving suspected paraquat intoxications. The concentration of paraquat and diquat in serum ranged from <0.005 to 72 μg/ml.
Similar content being viewed by others
References
Tomlin CDS (2003) The pesticide manual, 13th edn. British Crop Protection Council, Hampshire
Tsunenari S, Yonemitsu K, Uchimura Y, Kanda M (1981) The influence of putrefactive changes on the determination of paraquat in autopsy materials. Forensic Sci Int 17:51–56
Nagami H, Nishigaki Y, Matsushima S, Yajima N (2007) Paraquat poisoning in Japan: a hospital-based survey. J Rural Med 2:85–92
Fuke C, Ameno K, Ameno S, Kiriu T, Shinohara T, Sogo K, Ijiri I (1992) A rapid, simultaneous determination of paraquat and diquat in serum and urine using second-derivative spectroscopy. J Anal Toxicol 16:214–216
Kawase S, Kanno S, Ukai S (1984) Determination of the herbicides paraquat and diquat in blood and urine by gas chromatography. J Chromatogr 283:231–240
Draffan GH, Clare RA, Davies DL, Hawksworth G, Murray S, Davies DS (1977) Quantitative determination of the herbicide paraquat in human plasma by gas chromatographic and mass spectrometric methods. J Chromatogr 139:311–320
Almeida RM, Yonamine M (2007) Gas chromatographic–mass spectrometric method for the determination of the herbicides paraquat and diquat in plasma and urine samples. J Chromatogr B 853:260–264
Posecion NC, Ostrea EM, Bielawski DM (2007) Quantitative determination of paraquat in meconium by sodium borohydride-nickel chloride chemical reduction and gas chromatography/mass spectrometry (GC/MS). J Chromatogr B 862:93–99
Ito S, Nagata T, Kudo K, Kimura K, Imamura T (1993) Simultaneous determination of paraquat and diquat in human tissues by high-performance liquid chromatography. J Chromatogr 617:119–123
Fuke C, Arao T, Morinaga Y, Takaesu H, Ameno K, Miyazaki T (2002) Analysis of paraquat, diquat and two diquat metabolites in biological materials by high-performance liquid chromatography. Legal Med 4:156–163
Ito M, Hori Y, Fujisawa M, Oda A, Katsuyama S, Hirose Y, Yoshioka T (2005) Rapid analysis method for paraquat and diquat in the serum using ion-pair high-performance liquid chromatography. Biol Pharm Bull 28:725–728
Hara S, Sasaki N, Takase D, Shiotsuka S, Ogata K, Futagami K, Tamura K (2007) Rapid and sensitive HPLC method for the simultaneous determination of paraquat and diquat in human serum. Anal Sci 23:523–526
Blake DK, Gallagher RT, Woollen BH (2002) Improved methods for the analysis of paraquat in biological fluids. Chromatographia 55:S183–S185
Lee XP, Kumazawa T, Fujishiro M, Hasegawa C, Arinobu T, Seno H, Ishii A, Sato K (2004) Determination of paraquat and diquat in human body fluids by high-performance liquid chromatography/tandem mass spectrometry. J Mass Spectrom 39:1147–1152
Ariffin MM, Anderson RA (2006) LC/MS/MS analysis of quaternary ammonium drugs and herbicides in whole blood. J Chromatogr B 842:91–97
Wang KC, Chen SM, Hsu JF, Cheng SG, Lee CK (2008) Simultaneous detection and quantitation of highly water-soluble herbicides in serum using ion-pair liquid chromatography–tandem mass spectrometry. J Chromatogr B 876:211–218
Tomita M, Okuyama T, Nigo Y (1992) Simultaneous determination of paraquat and diquat in serum using capillary electrophoresis. Biomed Chromatogr 6:91–94
Makihata N, Yamasaki T, Eiho J (2007) Determination of diquat in water samples by hydrophilic interaction chromatography/electrospray ionization/mass spectrometry coupled with solid-phase extraction using a stable isotope labeled compound. Bunseki Kagaku 56:579–585
Whitehead RD Jr, Montesano MA, Jayatilaka NK, Buckley B, Winnik B, Needham LL, Barr DB (2010) Method for measurement of the quaternary amine compounds paraquat and diquat in human urine using high-performance liquid chromatography–tandem mass spectrometry. J Chromatogr B 878:2548–2553
Cai SS, Syage JA (2006) Comparison of atmospheric pressure photoionization, atmospheric pressure chemical ionization, and electrospray ionization mass spectrometry for analysis of lipids. Anal Chem 78:1191–1199
Straube EA, Dekant W, Völkel W (2004) Comparison of electrospray ionization, atmospheric pressure chemical ionization, and atmospheric pressure photoionization for the analysis of dinitropyrene and aminonitropyrene LC–MS/MS. J Am Soc Mass Spectrom 15:1853–1862
Lembcke J, Ceglarek U, Fiedler GM, Baumann S, Leichtle A, Thiery J (2005) Rapid quantification of free and esterified phytosterols in human serum using APPI-LC–MS/MS. J Lipid Res 46:21–26
Müller A, Mickel M, Geyer R, Ringseis R, Eder K, Steinhart H (2006) Identification of conjugated linoleic acid elongation and beta-oxidation products by coupled silver-ion HPLC APPI-MS. J Chromatogr B 837:147–152
Cai Y, Kingery D, McConnell O, Bach AC 2nd (2005) Advantages of atmospheric pressure photoionization mass spectrometry in support of drug discovery. Rapid Commun Mass Spectrom 19:1717–1724
Takino M, Daishima S, Nakahara T (2003) Liquid chromatography/mass spectrometric determination of patulin in apple juice using atmospheric pressure photoionization. Rapid Commun Mass Spectrom 17:1965–1972
Yoshioka N, Akiyama Y, Teranishi K (2004) Rapid simultaneous determination of o-phenylphenol, diphenyl, thiabendazole, imazalil and its major metabolite in citrus fruits by liquid chromatography–mass spectrometry using atmospheric pressure photoionization. J Chromatogr A 1022:145–150
Yoshioka N, Asano M, Kuse A, Mitsuhashi T, Nagasaki Y, Ueno Y (2011) Rapid determination of glyphosate, glufosinate, bialaphos, and their major metabolites in serum by liquid chromatography-tandem mass spectrometry using hydrophilic interaction chromatography. J Chromatogr A 1218:3675–3680
van Nuijs AL, Tarcomnicu I, Covaci A (2011) Application of hydrophilic interaction chromatography for the analysis of polar contaminants in food and environmental samples. J Chromatogr A 1218:5964–5974
Acknowledgments
The authors thank Dr. Masahiko Takino and Dr. Hideaki Uchida of Agilent Technologies for helpful advice in setting LC/MS analytical conditions.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yoshioka, N., Asano, M., Kuse, A. et al. Rapid and sensitive quantification of paraquat and diquat in human serum by liquid chromatography/time-of-flight mass spectrometry using atmospheric pressure photoionization. Forensic Toxicol 30, 135–141 (2012). https://doi.org/10.1007/s11419-012-0138-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11419-012-0138-5