DETECTOR OF REDUCTIVE AIR POLLUTANT, ITS CONCENTRATION MEASURE, ITS DETECTION METHOD AND ITS CONCENTRATION MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a detector having a simple structure capable of detecting reductive air pollutant suspended in the air by a simple operation. SOLUTION: This detector 1 comprises a detection member 10 formed by carrying basic aqueous solution of a silver-ammonia complex compound having discoloring property by being reduced on the surface of a base material 12 such as a plastic sheet, a glass plate or the like in the form of a detection chemical (detection layer) 11. For example, formaldehyde in the air is detected by using the detector, to thereby enable to cope precisely with an indoor environmental pollution problem called house-sick syndrome. As an execution sample, the detection member is formed by applying dispersion liquid acquired by dispersing a particlate aluminum oxide uniformly in the basic aqueous solution of the silver-ammonia complex compound on the glass plate by a spinner. When the detection member is stood still in the air atmosphere having the formaldehyde including concentration of 10 ppm, a white color on the surface of the detection member is changed into a black color after ten minutes.