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Application of Pesticide Quantification in Unpolished Rice by LC-Dopant-Assisted Atmospheric Pressure Photoionization-MS

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Abstract

We applied liquid chromatography-dopant-assisted atmospheric pressure photoionization-mass spectrometry to quantify four distinct pesticides (isoprothiolane, fenitrothion, fthalide, and ethophenprox) in unpolished rice flour. Although the effect of acetone as a dopant on enhancement of ionization differed among the pesticides, the analytical results by LC-DA-APPI-MS with a dopant flow rate of 50 μL min−1 were not only repeatable (relative SD < 9%, n = 3) but also comparable to those by gas chromatography–mass spectrometry.

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Acknowledgements

This work was supported by the Small- and Medium-sized Enterprise Intellectual Foundation Construction Project of the Japanese Ministry of Economy, Trade and Industry.

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Authors and Affiliations

  1. National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Umezono, Tsukuba, Ibaraki, 305-8563, Japan

    Nobuyasu Itoh, Takamitsu Otake, Yoshie Aoyagi, Mayumi Matsuo & Takashi Yarita

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  1. Nobuyasu Itoh
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  2. Takamitsu Otake
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  3. Yoshie Aoyagi
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  4. Mayumi Matsuo
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  5. Takashi Yarita
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Correspondence to Nobuyasu Itoh.

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Itoh, N., Otake, T., Aoyagi, Y. et al. Application of Pesticide Quantification in Unpolished Rice by LC-Dopant-Assisted Atmospheric Pressure Photoionization-MS. Chroma 70, 1073–1078 (2009). https://doi.org/10.1365/s10337-009-1284-8

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