MONITORING SYSTEM AND DETECTING DEVICE

A purpose is to provide a monitoring system to monitor whether there is a substance to be monitored in the air, and a detecting device used in the monitoring system. The monitoring system includes a detecting device, an analyzing device, and an abnormality notification system. The detecting device determines whether the air is in an abnormal state on the basis of an output signal from an abnormality detection sensor, pours liquid to be inspected, into which the air is sucked and liquefied, into a previously-installed reagent container when determining the abnormal state, generates mixed liquid in which a reactant in the reagent container and the poured liquid to be inspected are mixed, and drops the generated mixed liquid to an electrode of the analyzing device. The analyzing device determines existence/non-existence of a substance to be monitored on the basis of the mixed liquid dropped to the electrode, and gives a predetermined notification to the abnormality notification system when determining that there is the substance to be monitored. The abnormality notification system gives a predetermined notification when receiving the notification from the analyzing device.