US 8,044,343 B2 · Gas analyzer

Abstract

A plurality of molecule components included in a gas are to be ionized at the same time by PI method. For instance, a plurality of molecule components included in a gas generated at a certain instance are accurately analyzed in real time based on PI method. A gas analyzer is provided with a gas transfer apparatus for transferring a gas generated from a sample in a sample chamber to an analyzing chamber; an ionizer for ionizing the gas; a quadruple filter for separating ions by mass/charge ratio; and an ion detector for detecting the separated ions. The ionizer is provided with an ionizing region arranged in the vicinity of a gas exhaust of the gas transfer apparatus, and a lamp for applying light on the ionizing region. Since the lamp outputs light which has light directivity lower than that of a laser beam and travels by spreading, the gas entered the ionizing region in the ionizer receives light in a wide range, and the gas components inside are ionized at the same time.

Claims21

Dependent claims

A gas analyzer comprising:

light emitting means that emits light having a light directivity lower than that of laser light toward an ionizing region;
electron generating means that is electrically energized to generate electrons traveling toward the ionizing region;
ion separating means that separates, according to a mass-to-charge ratio, ions of a gas ionized by the light emitting means;
and
ion detecting means that detects the ions separated by the ion separating means;
wherein both the light emitting means and the electron generating means are mounted around the ionizing region, and
wherein emitting light from the light emitting means and generating electrons from the electron generating means can be selectively performed.

4 more elements

Dependencies are inferred from the claim text.

Gas analyzer

Life of this patent

Gas analyzer

Life of this patent

Abstract

Claims21