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根据有关公式算出不同的ｐＨ值、不同游离Ｆ~－浓度时ＡｌＦ各形体的分布系数（α_ｎ），并导出计算平均配位数公式，进而算出有关饮用水除氟方法的最佳ｐＨ值范围。
According to the formula, the distribution coefficient (α_n) of each AlF at different pH and different free F ~ - concentration was calculated and the formula for calculating the average coordination number was deduced. The optimal pH value range of fluoride removal method for drinking water was calculated.