液化石油气燃烧产物及其对肺部的损伤

A Primary Study on the Combustion Products of LPG & Their Damage to Lung

在人为控制的相同燃烧条件下,北京市液化石油气(LPG)的燃烧有害废气主要是NO_2、CO和甲醛;而蜂窝煤是SO_2、CO和NO_2。LPG的燃烧颗粒物中约有93％是可吸入尘,其水性悬浮液呈灰黄色、粘稠度较大。以30mg/kg给大鼠气管注入染毒后,肺灌洗液中酸性磷酸酶活性、唾液酸和白蛋白的含量均明显高于对照组,而乳酸脱氢酶活性在组间无显著性差别。LPG的可吸入尘在肺内扩散不良,局部损伤也较混合颗粒组严重。提示应对此进行深入研究,并应注意安全使用LPG以及改善厨房排气效果。

Under the same burning conditions, NO2, CO and formaldehyde are the main gaseous Products from the combustion of LPG, while SO2, CO, NO, are from coal.The IP is about 93%of the combustion Por-ticulates of LPG.Its water-suspension is gray-yellowish and sticky.Wistar rats were given 30mg of IP from LPG Per Kg bw by in-trabronchial instillation. After 24 hours, in the lung instillation fluid, the activity pf acid phosphatase ( ACP ) , the contents of Na-cetylneuraminic acid C NA ) and albumin are siagnificantly higher than those of control group. But there is no difference between the activity of lactic dehydrogenase(LDH) of the LPG group and that of the control group. The water-suspension of IP of LPG was hardly to diffuse in the lung. The damage in the lung of LPG group is more serious than that of the control.