Cavender F L, Williams J L, Steinhagen W H, Woods D
J Toxicol Environ Health. 1977 May;2(5):1147-59. doi: 10.1080/15287397709529513.
The hygroscopic nature of sulfuric acid mist has not been totally appreciated in previous toxicological work. Sulfuric acid mist, by adsorption or desorption of water, equilibrates rapidly with the relative humidity of its environment. The measured particle diameters of a given sulfuric acid mist will increase in size as the particles adsorb water on entering the respiratory tract. For a dry climate of 5% relative humidity, sulfuric acid mist particles will triple in size in the respiratory tract. At 60% relative humidity, particles will double in size, while particles in humid regions will increase very little. In the respiratory tract, the particles will deposit according to their size at 98% relative humidity. In order to compare toxicity data for sulfuric acid mist, relative humidity must be carefully recorded throughout the experimental procedure.
在以往的毒理学研究中，硫酸雾的吸湿性尚未得到充分认识。硫酸雾通过水的吸附或解吸，能迅速与周围环境的相对湿度达到平衡。当特定的硫酸雾颗粒进入呼吸道并吸附水分时，所测得的粒径会增大。在相对湿度为5%的干燥气候条件下，硫酸雾颗粒在呼吸道中的尺寸会增大两倍。在60%的相对湿度下，颗粒尺寸会增大一倍，而在潮湿地区颗粒尺寸几乎不会增加。在呼吸道中，颗粒会在相对湿度为98%时根据其大小进行沉积。为了比较硫酸雾的毒性数据，在整个实验过程中必须仔细记录相对湿度。
