Canon Anelva Corporation

Anelva Corporation

Harumi Maruyama

Yoshiro Shiokawa

Megumi Nakamura

Yoshiki Hirano

Yasuyuki Taneda

Qiang Peng

Aiko Wada

A mass spectrometer includes an ionization chamber () which generates fragment-free ions to be detected from an introduced gas to be detected, and a mass spectrometer chamber () including a mass spectrometer () which fractionates by mass the ions to be detected that are transported from the ionization chamber and which detects the ions. The mass spectrometer further includes a probe () which holds a liquid sample or a solid sample and causes the liquid sample or the solid sample to generate the gas to be detected upon heating by a heating means, and a gas introduction means () which introduces a predetermined gas from the probe to the ionization chamber to transport, to the ionization chamber, the gas to be detected that is generated at the probe.

Mass spectrometer and mass spectrometry method

The present invention maintains a stable emission amount from an emitter. In an embodiment of the present invention, a solid sample or a liquid sample is heated to gasify an object to be measured contained in the solid sample or the liquid sample, thereby forming a neutral gaseous molecule, and a metal ion emitted from an emitter having an oxidized surface is attached to the neutral gaseous molecule to ionize the neutral gaseous molecule, which is subjected to mass spectrometry. The solid sample or the liquid sample is a sample that emits a reducing gas by heating. The heating for gasifying the object to be measured is performed at a temperature lower than the vaporization temperature of the solid sample or the liquid sample and not less than the vaporization temperature of the object to be measured, and an oxidizing gas is provided to the emitter.

Mass spectrometry and mass spectrometer used for the same

An internal standard material to be added to a specimen containing a material to be measured when measuring the content of the material to be measured by performing mass spectrometry on the specimen includes a hindered phenol compound.

Internal standard material, resin composition, and measurement method

A mass spectrometer system comprises a chamber having an ion emitting unit to emit metal ions in the chamber with a communicating hole; a neutral molecule introduction unit; another gas introduction unit; a controller controlling a temperature of a region where metal ions attach to the neutral molecules; and a mass analyzer for the neutral molecules with the metal ions, wherein plotting an attachment energy of the metal ions attached to the neutral molecules in the chamber along an abscissa and the temperature of the region where the metal ions attach to the neutral molecules along an ordinate, the controller adjusts the temperature of the region so as to fall within a range obtained by excluding a range corresponding to the temperature of the region from 150 to 200&#xb0; C. from a range surrounded by the temperatures of the region [&#xb0; C.]=150&#xd7;attachment energy [eV], 100&#xd7;attachment energy [eV]&#x2212;50, and 20&#xb0; C., and attachment energies [eV]=2.1 and 0.5.

Mass spectrometer system and mass spectrometry method

A mass spectrometer includes an ionization chamber, a temperature control unit which controls the temperature in the ionization chamber to vaporize a sample in at least one of solid and liquid state in the ionization chamber, an introduction unit which introduces the sample into the ionization chamber, an ion supply unit which supplies ions to the ionization chamber to ionize, in the ionization chamber, the sample vaporized in the ionization chamber, and a mass analyzer which measures the mass of the molecules of the ionized sample.

An ion attachment mass spectrometry apparatus causing positively charged metal ions to attach to molecules of a gas to be measured in an attachment region to generate attached ions and then performing mass spectrometry on the attached ions by a mass spectrometer, has a metal ion selective disassociation unit for selectively making the metal ions attached to the specific molecules in the attachment region disassociate. By making the metal ions attached to the specific molecules such as HO disassociate, a state is formed where the metal ions are attached to only the sample gas to be measured and the reliability of measurement of the gas is improved.

Growing community of inventors

Inagi, Japan

Harumi Maruyama