STUDY ON THE DISTRIBUTION CHARATERISTICS OF PARTICULATE MATTER POLLUTION IN ELDERLY INDOOR SPACE BASED ON REASSESSMENT

摘要

In order to study the distribution characteristics of particulate matter pollution in the elderly indoor space,a method based on risk assessment was proposed.Taking the newly-built space for the elderly and the original space for the aged in a nursing home as the research object,the particulate matter samples in the air of different functional areas of the two pension space were detected in 2019.The samples were processed by drying and grinding and the content detection of plasma spectrometer to determine the concentrations of cadmium,chromium,copper,lead and zinc in the particulate matter samples Health risk assessment of particulate matter was carried out.The results showed that the particulate matter concentration in different functional areas of the newly-built space for the aged was higher than that of the original space,and the difference was statistically significant; the concentration of cadmium and zinc in the newly-built space for the aged was significantly higher than that in the original space for the aged; the pollution degree of the different functional areas in the original space for the aged was bedroom > public toilet > rehabilitation center > entertainment and leisure area,and the different functional areas of the new elderly care space The pollution degree was bedroom > public toilet > entertainment and leisure area > rehabilitation center; the non carcinogenic risk of heavy metals was chromium > lead > cadmium > copper > zinc.