Formaldehyde is the main indoor air pollutants, seriously affecting people's health. Currently the method of detection of formaldehyde have disadvantages as testing a long cycle, the operation is not convenient, equipment bulky and expensive and so on. Formaldehyde-site of the main detector electrochemical sensor detection principle, detection accuracy is not high, susceptible to environmental influences. The topic for the lack of conventional detection of formaldehyde and the current domestic marke...