Multiphoton ionization mass spectrometry of nitrated polycyclic aromatic hydrocarbons

Yuanyuan Tang, Tomoko Imasaka, Shigekazu Yamamoto, Totaro Imasaka

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)

抄録

Abstract In order to suppress the fragmentation and improve the sensitivity for determination of nitrated polycyclic aromatic hydrocarbons (NPAHs), the mechanism of multiphoton ionization was studied for the following representative NPAHs, 9-nitroanthracene, 3-nitrofluoranthene, and 1-nitropyrene. The analytes were extracted from the PM2.5 on the sampling filter ultrasonically, and were measured using gas chromatography/multiphoton ionization/time-of-flight mass spectrometry with a femtosecond tunable laser in the range from 267 to 405 nm. As a result, a molecular ion was observed as the major ion and fragmentation was suppressed at wavelengths longer than 345 nm. Furthermore, the detection limit measured at 345 nm was measured to be the subpicogram level. The organic compounds were extracted from a 2.19 mg sample of particulate matter 2.5 (PM2.5), and the extract was subjected to multiphoton ionization mass spectrometry after gas chromatograph separation. The background signals were drastically suppressed at 345 nm, and the target NPAHs, including 9-nitroanthracene and 1-nitropyrene, were detected, and their concentrations were determined to be 5 and 3 pg/m3, respectively.

元の言語英語
記事番号15460
ページ(範囲)109-114
ページ数6
ジャーナルTalanta
140
DOI
出版物ステータス出版済み - 8 1 2015

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1-nitropyrene
Polycyclic Aromatic Hydrocarbons
Ionization
Mass spectrometry
Mass Spectrometry
Particulate Matter
Ions
Laser tuning
Organic compounds
Gas chromatography
Gas Chromatography
Limit of Detection
Lasers
Gases
Sampling
Wavelength
9-nitroanthracene

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

これを引用

Multiphoton ionization mass spectrometry of nitrated polycyclic aromatic hydrocarbons. / Tang, Yuanyuan; Imasaka, Tomoko; Yamamoto, Shigekazu; Imasaka, Totaro.

:: Talanta, 巻 140, 15460, 01.08.2015, p. 109-114.

研究成果: ジャーナルへの寄稿記事

Tang, Yuanyuan ; Imasaka, Tomoko ; Yamamoto, Shigekazu ; Imasaka, Totaro. / Multiphoton ionization mass spectrometry of nitrated polycyclic aromatic hydrocarbons. :: Talanta. 2015 ; 巻 140. pp. 109-114.
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