| 纤维矿物粉尘在Gamble溶液中的溶解行为 |
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| 引用本文： | 董发勤,李国武,霍冀川,迟燕华.纤维矿物粉尘在Gamble溶液中的溶解行为[J].岩石矿物学杂志,2000,19(3):199-205. |
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| 作者姓名： | 董发勤 李国武 霍冀川 迟燕华 |
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| 作者单位： | 西南工学院,绵阳,621002 |
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| 基金项目： | 国家自然科学基金!(编号 :4 950 2 0 2 5)，CIDA资助 |
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| 摘 要： | 本文用人工配制的Ｇａｍｂｌｅ溶液和三个酸度系列，研究了６对粉尘在模拟人体环境下９６ｄ的溶液特征和生物持久性。结果表明：不同粉尘中铁元素的溶解速率多数出现两个峰值区，三八面体结构型粉尘中铁与镁元素溶解同步。高镁矿物粉尘溶解速率在第一阶段多出现峰值；沸石、硅灰石的钙溶解速率比较稳定，硅灰石在低ｐＨ值区表现出前高后低的特点；Ｓｉ在Ｇａｍｂｌｅ溶液中的溶解峰点在ｐＨ５体系中出现在４８ｄ以前，在ｐＨ７体系中
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| 关 键 词： | 矿物 纤维 粉尘 Gamble溶液 溶解 生物持久性 |
Dissolving Behavior of Fibrous Mineral Dusts in Gamble Solution |
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| Dong Faqin,Li Guowu,Huo Jichuan,Chi Yanhua.Dissolving Behavior of Fibrous Mineral Dusts in Gamble Solution[J].Acta Petrologica Et Mineralogica,2000,19(3):199-205. |
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| Authors: | Dong Faqin Li Guowu Huo Jichuan Chi Yanhua |
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| Abstract: | The dissolving characters and bio_resistance of 6 pairs of mineral dusts in a simulated human body environment for 96 days were studied by using Gamble solution and three acid series. The results show that the iron dissolving rates in most mineral dusts have two peaks, and that magnesium is dissolved simultaneously with iron in dusts with tri_octahedral structure. Most of the dissolving rates of high_magnesium mineral dusts display peaks in the first dissolving stage. The calcium dissolution rates of zoelite and wollastonite are relatively stable, and wollastonite show the feature of being high in the front and low in the rear in the low_pH area. The dissolution peak of Si appeared in the first 48 days in Ph5 Gamble solution, but after 48 days in the pH7 series. Al dissolution is easy in the pH3 and pH5 series and difficult in pH7. The cumulate dissolution amount of all elements in Gamble solution of fibrous mineral dusts increases with time, and the total dissolution amount of fibrous samples is mostly larger than that of the clayey ones. There are phenomena of cracking, etching and peeling on the surface of fibrous minerals and fibers tend to be scattered or break during dissolution. The dissolving rate of flaky dusts is positively correlated to the step densities and oxidizing rate of iron_bearing samples. The total dissolution amount is basically positively proportional to the system acidity and total organic ions. The dissolving rate of Ca_, Mg_ or Al_rich mineral dusts is higher than that of K_ or Si_rich dusts. The low pH, high solubility of O 2 or oxidizing reaction and high salinity solution of the environment may accelerate the dissolution of dusts. |
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| Keywords: | mineral fiber dust Gamble solution bio_resistance |
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