Detector agent for halogen compounds and method for detecting halogen compounds

US6773925B2 · kind B2 · utility

Assignees

• L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude · FR
• AIR LIQUIDE ELECTRONICS SYSTEMS · FR

Inventors

• Yoshihiro Ibaraki · Tokyo, JP
• Hideji Kawanaka
• Hidekazu Ina · Tokyo, JP
• Shinichi Ando · Tokyo, JP

Key dates

• Filing date: Jan 24, 2001
• Grant date: Aug 10, 2004
• Expiry date: Dec 6, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/19
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

There are provided a detector agent which is effectively discolored at a lower concentration for various halogen compounds and a method for detecting halogen compounds by use of said detector agent.A detector agent for halogen compounds, which contains curcumin or Bromocresol Green as a discoloring component, and said discoloring component is preferably supported on granular activated alumina.