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Abstract

Abstract: By using an atmospheric pressure chemicaLIonization(APCI) source, negative ion mass spectra of eight perchlorinated polycyclic aromatic hydrocarbons(PAH), hexachlorobenzene, perchloronaphthalene, perchloroacenaphthylene, perchloroanthracene, perchlorophenanthrene, perchlorofluoranthene, perchloropyrene and perchlorocorannulene, have been recorded for the first time. In the ion source, the negative ions, whose masses are 19 less than the molecular weights of their pristine compounds, can be produced by losing a chloride atom and capturing an oxygen anion. Molecular ions of the samples can be produced from the perchlorinated PAHs containing a five membered ring. The results show that APCIis the right ion source for mass analysis of the organic compounds with low polarity such as the perchlorinated PAHs.

Key words: Perchlorinated polycyclic aromatic hydrocarbons, Atmospheric pressure chemicaLIonization, Mass spectrometry

CLC Number:

O643.1

TrendMD:

DING Jie, XIE Su-Yuan, YU La-Jia, HUANG Rong-Bin, ZHENG Lan-Sun . null[J]. Chem. J. Chinese Universities, 1999, 20(12): 1936.

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