Hitachi, Ltd.

Hisashi Kimoto

Hayato Tobe

Yasushi Terui

Kazuo Moriya

Yoshisada Ebata

Mitsuru Oonuma

Hiromi Yamashita

Seiji Kamimura

In an analysis device, an auxiliary gas supplied from a compressor 1 is introduced from an auxiliary gas inlet 3 via a pipe 2 to a burner through a pressure regulator 5, a pressur meter 6, a pressure switch 7 and a connecting joint 8. On the other hand, a combustible gas supplied from a gas bomb 9 is introduced from a combustible gas inlet 11 via a pipe 10 to the burner through a first electromagnetic valve 12, a pressure regulator 13, a pressure meter 14, a needle valve 15, a second electromagnetic valve 16 and a connecting joint 17 and further via a tube. An auxiliary gas use block 4, on which auxiliary gas flow controlling elements such as the pressure regulator 5, the pressure meter 6 and the pressure switch 7 are secured, is provided independent and separated from a combustible gas use block 18, on which combustible gas flow controlling elements such as the first electromagnetic valve 12, the pressure regulator 13, the pressure meter 14, the needle valve 15 and the second electromagnetic valve 16 are secured. Whereby the analysis device using chemical combustion flame having an element safety is provided in which possible danger caused by such as the gas leakage and the gas mixing between the combustible gas passage and the auxiliary gas passage is further reduced.

Analysis device using chemical combustion flame

A light beam emitted by a hollow cathode lamp is concentrated on a central portion of an electrothermal sample atomizing apparatus by a concave mirror. The light concentrated on the central portion of the electrothermal sample atomizing apparatus is further concentrated on a central portion of a flame produced in a burner type sample atomizing apparatus by a lens. The light traveled through the burner type sample atomizing apparatus is condensed by a concave mirror, reflected by a flat mirror, and concentrated on an entrance slit of a spectroscope. Light outgoing through an exit slit of the spectroscope is detected by a photodetector.

Atomic absorption spectrophotometer and atomic absorption

Atomic absorption spectrometer

Growing community of inventors

Hitachinaka, Japan

Hisashi Kimoto