When the compartment has been continuously enclosed for 12 days, the air sample is collected once through operation, then 24 metallic elements in air are determined by AAS.

• 用原子吸收光谱法，一次采样，同时测定连续密闭12昼夜的密闭空间空气中24种金属气溶胶，即银、铝、钡、钙、镉、钴、铬、铜、铁、钾、镁、锰、钼、钠、镍、铅、锑、硒、硅、锡、锶、钛、钒和锌。