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光透射-光反射方法获取光程放大校正因子的关键技术研究

, PP. 104-110

Keywords: T-R方法,光程放大校正因子,悬浮颗粒物,二次多项式

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Abstract:

光透射-光反射测量方法(T-R方法)是测量悬浮颗粒物吸收系数的主要方法之一,其中GF/F滤纸水合程度以及光程放大校正因子模型是其关键问题。GF/F滤纸水合程度对光学性质的影响实验分析结果表明,浸泡60~80min的滤纸,其透射比、反射比和反射率误差最小,其值分别为3.0%,0.5%和0.5%。在此基础上,以小球藻为研究对象,对T-R方法的光程放大校正因子模型进行了研究,结果表明多项式回归模型优于线性和乘幂回归模型;选择二次多项式模型作为T-R方法的光程放大校正因子模型,其回归区间为,平均相对误差为9.19%。

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