HIGHLY SENSITIVE DETECTION OF AROMATIC-MOLECULES BY LASER 2-PHOTON IONIZATION ON THE SURFACE OF WATER IN AMBIENT AIR

被引：34

作者：

INOUE, T ^{[1
]}

MASUDA, K ^{[1
]}

NAKASHIMA, K ^{[1
]}

OGAWA, T ^{[1
]}

机构：

[1] KYUSHU UNIV,DEPT MOLEC SCI & TECHNOL,KASUGA,FUKUOKA 816,JAPAN

来源：

ANALYTICAL CHEMISTRY | 1994年 / 66卷 / 07期

关键词：

D O I：

10.1021/ac00079a014

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The laser two-photon ionization technique has been applied to several aromatic molecules on the surface of water in ambient air. The observed signal consists of a fast component and a slow component. The fast component was assigned to photoelectrons, which were ejected from aromatic molecules via two-photon excitation-ionization processes. The slow component was assigned to oxygen anions, which were produced by an oxygen molecule capturing an ejected electron. The photoionization charge was linearly proportional to the solute concentration when the incident angle of the laser beam was large. Less soluble molecules displayed a larger signal. The detection limit of pyrene was 9 ng/dm3 (ppt), which was close to the detection limit obtained in hexane solution. This technique is found to be sensitive, convenient, and applicable in ambient air.

引用

页码：1012 / 1014

页数：3

共 12 条

[1] HIGHLY SENSITIVE DETECTION OF PYRENE BY LASER MULTIPHOTON IONIZATION ON THE SURFACE OF WATER [J].

MASUDA, K ;

INOUE, T ;

YASUDA, TO ;

NAKASHIMA, K ;

OGAWA, T .

ANALYTICAL SCIENCES, 1993, 9 (02) :297-298

[2] LASER 2-PHOTON IONIZATION DETECTION OF AROMATIC-MOLECULES ON A METAL-SURFACE IN AMBIENT AIR [J].

OGAWA, T ;

YASUDA, TO ;

KAWAZUMI, H .

ANALYTICAL CHEMISTRY, 1992, 64 (21) :2615-2617

[3] TRACE DETERMINATION OF BENZENE AND AROMATIC-MOLECULES IN HEXANE BY LASER 2-PHOTON IONIZATION [J].

OGAWA, T ;

KISE, M ;

YASUDA, T ;

KAWAZUMI, H ;

YAMADA, S .

ANALYTICAL CHEMISTRY, 1992, 64 (11) :1217-1220

[4] LASER 2-PHOTON IONIZATION OF 4,4'''-BIS[(2-BUTYLOCTYL)OXY]-PARA-QUATERPHENYL ON A PLATINUM SURFACE IN AMBIENT AIR - HIGHLY SENSITIVE DETECTION OF SURFACE MOLECULES [J].

OGAWA, T ;

YASUDA, T ;

KAWAZUMI, H .

ANALYTICAL SCIENCES, 1992, 8 (01) :81-82

[5]

VOIGTMAN E, 1990, ANAL INSTRUM, V19, P1

[6] COMPARISON OF LASER-EXCITED FLUORESCENCE AND PHOTOACOUSTIC LIMITS OF DETECTION FOR STATIC AND FLOW CELLS [J].

VOIGTMAN, E ;

JURGENSEN, A ;

WINEFORDNER, JD .

ANALYTICAL CHEMISTRY, 1981, 53 (12) :1921-1923

[7] 2-PHOTON PHOTO-IONIZATION DETECTION OF POLYCYCLIC AROMATIC-HYDROCARBONS AND DRUGS IN A WINDOWLESS FLOW CELL [J].

VOIGTMAN, E ;

WINEFORDNER, JD .

ANALYTICAL CHEMISTRY, 1982, 54 (11) :1834-1839

[8] PHOTOELECTRON EMISSION STUDY OF IRON(II) AND COBALT(II) COMPLEXES IN AQUEOUS-SOLUTION - REORGANIZATION ENERGIES [J].

WATANABE, I ;

ONO, K ;

IKEDA, S .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1991, 64 (02) :352-357

[9]

YAMADA S, 1986, PROG ANAL SPECTROSC, V9, P429

[10]

YAMADA S, 1982, BUNSEKI KAGAKU, V31, pE247

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