多孔纤维矿物在氨基酸水溶液中的溶解性及其生物持久性研究  

Dissolubility and Bio-resistibility of Porous Fibrous Minerals in Amino Acid

作　　者：李国武[1] 董发勤[1] 彭同江[1] 万朴[1] 

机构地区：[1]西南工学院矿物材料及应用研究所,四川绵阳621002

出　　处：《岩石矿物学杂志》2000年第3期220-225,共6页Acta Petrologica et Mineralogica

基　　金：国家自然科学基金项目!(编号 :4 950 2 0 2 5)的资助

摘　　要：在模拟人体温度 37℃条件下 ,进行多孔纤维矿物粉尘与氨基酸作用的实验研究。在 72h内溶解过程中pH值和电导率的变化结果表明 ,多孔纤维矿物在氨基酸中发生的溶解作用与酸的性质有关 ,酸性氨基酸对矿物的溶解能力最强 ,中性次之 ,碱性最弱。其溶解过程在前 8h以内较强 ,以后趋于平缓 ,纤维矿物在氨基酸中的溶解程度从小到大为 :斜发沸石—坡缕石、海泡石—蛇纹石 ,说明斜发沸石有较强的耐蚀能力 ,其生物持久性较高 ,而蛇纹石石棉则表现为相对低的耐蚀性。The dissolubilities of fibrous clinoptilolite, sepiolite, palygorskite and chrysotile dusts in amino acid liquor at the simulated human body temperature (37℃) were investigated, and the changes of pH values and electric conductivity in the dissolving process in 72 hours were studied. The dissolution of fibrous minerals in amino acid is related to the acid types: the dissolution of fibrous minerals in acid amino acid (glutamic) is greater than that in neutral amino acid (valine), and the dissolution is weakest in alkaline amino acid (lysine). The dissolubility increased in the first 8 hours and then tended to be stable. The relative dissolution rates of fiber minerals in the same acid are: clinoptilolite < sepiolite and palygorskite < chrysotile, which shows that clinoptilolite has stronger corrosion_resisting ability and higher bio_resistibility, while chrysotile displays lower corrosion resistance.

关 键 词：纤维矿物 氨基酸 溶解作用 生物持久性 粉尘 

分 类 号：R135.2[医药卫生—劳动卫生]