基于Г型分布的空气质量评价普适指数公式

A universal exponential formula of air quality assessment based on Г distribution

在设定各项空气污染物的浓度"参照值"基础上,提出了一个适用于多项空气污染物的Г型分布空气质量评价普适指数公式。采用基于实数编码的遗传算法对公式中的参数优化,得出优化后适用于多项空气污染物的空气质量评价普适指数公式。公式被应用于多个实例分析计算,并与其他若干评价方法评价结果相比较,结果表明,该公式不受空气污染物种类和数目多少的限制。公式形式简单,计算快速,具有可比性、通用性和实用性。

By setting up benchmarks for air quality indices, a universal exponential formula based on F distribution suited to multi-pollutant is put forth for evaluating air quality. Real genetic algorithm （RGA） is used for optimizing the parameters in formula. The optimized formula is used in evaluating several cases, while comparing with resuits of other methods, and result shows that the modified universal formula becomes simple, easy, practical, applicable and free of the confine of kinds and numbers of pollutant.