川东地区石煤氟的赋存状态研究

A STUDY ON THE OCCURRENCE FORMS OF FLUORINE IN THE COAL STONE OF EASTERN SICHUAN

本文用人工控制条件的动力学方法—电渗析法测定了川东地区高氟石煤中氟的电渗析速度常数K(K石煤=3.375×10-3/h),同时测定了已知赋存状态的萤石、高岭石、含氟磷灰石中氟的电渗析速度常数。该地区高氟石煤中氟的赋存状态主要为吸附状态（相对百分数为92.6%）,其次是类质同象（相对百分数为7.4%）。这对该区环境质量、地下水污染状况的评价和预测,以及地方性氟中毒的环境病因研究等方面都具有重要的意义。

In the paper, the electrodialysis rate constant K of Fluorine in the coal stone of Eastern Sichuan is determined hy the Kinetic method, under controlled conditions. The occurrence forms of Fluorine in the coal stone is shown to be mainly absorbing state (about 92.6 percent), and isomorphic form(about 7.4 percent), This result has very important signeficance for the evaluation of environment quality, the study on environmental cause of the endemic fluorosis, etc, in this district.