以前工作研究了低浓度长时间吸入(1毫克/米~3)时石英的滞留、渗入与排出。指出染尘12个月后肺与淋巴结中的滞留量为粉尘总给予量的5.3%。停止染尘后观察了三个月,从肺与淋巴结看,实际上无石英排出。本文叙述了石英浓度为10毫克/米~3的长时间吸入实验。这一实验的目的在于说明排出、渗入和滞留受染尘浓度的影响到什么程度;其次,从最高容许浓 Previous work studied the retention, infiltration, and discharge of quartz at low concentrations of long-term inhalation (1 mg / m3). Pointed out that 12 months after the stained lung and lymph nodes in the amount of total deposition of 5.3% of dust. After stopping the observation of dust for three months, from the lungs and lymph nodes, virtually no quartz discharge. This article describes a long-term inhalation experiment with a quartz concentration of 10 mg / m3. The purpose of this experiment is to explain how much of the impact of discharge, infiltration and retention of dust concentration is followed. Second,