SAMPLE GAS SAMPLING APPARATUS AND HAZARDOUS MATERIAL DETECTION APPARATUS

SAMPLE GAS SAMPLING APPARATUS AND HAZARDOUS MATERIAL DETECTION APPARATUS

PROBLEM TO BE SOLVED: To solve the problem of a hazardous material detection apparatus of the conventional technology having the disadvantage of being insufficient in detection sensitivity such that, if the vapor pressure of hazardous material is too low or if there is only a trace amount of hazardo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HASHIMOTO YUICHIRO, YAMADA MASUYOSHI, SAKAIRI MINORU, KAN MASAO
Format: Patent
Sprache:eng
Schlagworte:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Zusammenfassung:PROBLEM TO BE SOLVED: To solve the problem of a hazardous material detection apparatus of the conventional technology having the disadvantage of being insufficient in detection sensitivity such that, if the vapor pressure of hazardous material is too low or if there is only a trace amount of hazardous material, it cannot detect the material unless an enrichment process is provided. SOLUTION: A hazardous material, typically a nitro compound, is efficiently ionized using a negative corona discharge and the negative ions created are detected with high sensitivity using a mass spectrometer. In this way the vapor of the hazardous material is detected with high sensitivity whereby a determination can be rapidly made as to whether or not the hazardous material is present. COPYRIGHT: (C)2006,JPO&NCIPI