▎ 摘　　要

NOVELTY - Chemical sensor comprises (a) a substrate comprising a first accommodating space and a second accommodating space, (b) a first colorimetric sensor array being exposed and arranged in the first accommodating space of the substrate, and comprising at least one first sensing material, and (c) a second colorimetric sensor array being arranged in the second accommodating space of the substrate. The second accommodating space is covered with an isolating layer which isolates liquid molecules and allows gas molecules to pass through the second colorimetric sensor array comprising at least one second sensing material. The first colorimetric sensor array changes from a first initial color to a first indicating color based on volatile part and a non-volatile part of the analyte, when the substrate is placed in an analyte. The second colorimetric sensor array changes from a second initial color to a second indicating color based on volatile part of the analyte. USE - The chemical sensor is useful for detecting existence or concentration of an analyte. ADVANTAGE - The chemical sensor simultaneously obtains information of volatile part and information of non-volatile part of the analyte. DETAILED DESCRIPTION - Chemical sensor comprises (a) a substrate comprising a first accommodating space and a second accommodating space, (b) a first colorimetric sensor array being exposed and arranged in the first accommodating space of the substrate, and comprising at least one first sensing material, and (c) a second colorimetric sensor array being arranged in the second accommodating space of the substrate. The second accommodating space is covered with an isolating layer which isolates liquid molecules and allows gas molecules to pass through the second colorimetric sensor array comprising at least one second sensing material. The first colorimetric sensor array changes from a first initial color to a first indicating color based on volatile part and a non-volatile part of the analyte, when the substrate is placed in an analyte. The second colorimetric sensor array changes from a second initial color to a second indicating color based on volatile part of the analyte. The first sensing material and the second sensing material comprises a coloring agent chosen from sodium salt or mixture of compounds of methyl red, Congo red, bromophenol blue, bromocresol purple, bromocresol green, cresol red, phenol red, thymolphthalein, resazurin, para nitrophenol, bromothymol blue, thymol blue, neutral red, crystal violet, 4-(4-nitrobenzyl) pyridine, pyrocatechol violet, chlorophenol red, nitrazine yellow, bromophenol red, m-cresol purple, Eriochrome black T (RTM: Sodium (4Z)-4-((1-hydroxynaphthalen-2-yl)hydrazinylidene)-7-nitro-3-oxonaphthalene-1-sulfonate), safranine, luciferin, eosin yellow, brilliant green, titan yellow, Victoria blue B, carmine, litmus, curcumin, anthocyanin, alizarin red S, alizarin yellow R, indigo carmine, Nile blue A, orange yellow G, eosin B, 3,3',5,5',-tetraiodophenol sulfone phenolphthalein, bromoxylenol blue, phenol blue, disperse orange 25, acridine orange, disperse orange 3, disperse red 1, bromopyrogallol red, diaminodiphenyl acer, aminofluorescein, violet ammonium urea, 2,6-dichloroindophenol, and pyrocatechol violet.