Status quo investigation on environmental sanitation in sightseeing cruise cabins and waiting lounges on Huangpu River

Objective To investigate the amenity and safety of indoor environments in sightseeing cruise cabins and waiting lounges.Methods The environmental qualities of sightseeing cruise cabins and waiting lounges were evaluated by the combination of field survey and environmental monitoring method.Results The temperatures in sightseeing cruise cabins ranged from 7.4℃ to 29.9℃，relative humidity 21.0%-80.2%，wind speed <0.05-0.28 m/s，noise 37.2-62.9 dB(A)，illuminance 102-1 950 lx. Carbon dioxide concentration in the air was 0.0037%-0.0068%，carbon monoxide <1.0 mg/m³，inhalable particles 0.027-0.097 mg/m³，total bacterial count under detection-14/dish.The temperatures in waiting lounges ranged from 7.3℃ to 18.3℃，relative humidity 30.6%-80.2%，wind speed <0.05-0.85 m/s，noise 50.2-74.8 dB(A)，illuminance 93-3 058 lx. Carbon dioxide concentration in the air was 0.046%-0.103%，carbon monoxide 1.2-3.8 mg/m³，methanal <0.010-0.039 mg/m³，inhalable particles 0.021-0.117 mg/m³，total bacterial count under detection-18/dish.Conclusion The wind speed and illuminance indicators in sightseeing cruise cabins are appropriate，however，temperature and relative humidity are not quite as good, the indoor environment in waiting lounges is fine. The amenity and security in the two sites are both satisfactory.