ATOMIZING DEVICE FOR ATOM ABSORBANCE ANALYSIS

ATOMIZING DEVICE FOR ATOM ABSORBANCE ANALYSIS

PURPOSE:To atomize an analysis sample without the use of a combustible gas at all, by a method wherein air in an atmosphere pressure is brought into a plasma condition by means of a high frequency, and a brilliance-modulated light source is used. CONSTITUTION:An air plasma 4 is produced by a microwa...

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Hauptverfasser: KOIZUMI HIDEAKI, OOISHI KOUNOSUKE
Format: Patent
Sprache:eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator KOIZUMI HIDEAKI
OOISHI KOUNOSUKE
description PURPOSE:To atomize an analysis sample without the use of a combustible gas at all, by a method wherein air in an atmosphere pressure is brought into a plasma condition by means of a high frequency, and a brilliance-modulated light source is used. CONSTITUTION:An air plasma 4 is produced by a microwave generated by a magnetron 11. Air is fed by an air pump 14, and a solution sample 13, atomized by a atomizer 12, is mixed. The mixture is caused to flow so as to cover an electrode 9 to form the plasma. 4. A hollow cathode lamp 1 is lighted by a pulsating current of 1.5KHz, and a strength of radiant light is modulated to pass it through the plasma. Light, coming out from the plasma, selects an analysis ray by means of a spectroscope 5 to detect it by a photomultiplier 7. The detecting signal is amplified by a preamplifier 30, it passes through a band-pass filter 31 which passes only a full frequency component of 1.5kHz, and absorbance is displayed in a recorder 33 after passage of it through a logarithmic converter.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title ATOMIZING DEVICE FOR ATOM ABSORBANCE ANALYSIS
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