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

朱建华; 周虹丽; 韩冰; 李铜基

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

国家海洋技术中心,天津 300112

基金项目: 国家自然科学基金(40606039)。

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出版历程
- 收稿日期: 2009-08-27

A study on a path-length amplification correction factor by a transmittance-reflectance method

National Ocean Technology Center,Tianjin 300112, China

摘要

摘要: 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60~80 min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%。
- T-R方法 /
- 光程放大校正因子 /
- 悬浮颗粒物 /
- 二次多项式
Abstract: A transmittance-reflectance(T-R)method is one of the most important methods to measure the absorption coefficient of suspended particulate matter. The GF/F filter paper's hydration degree and the path-length amplification correction factor model play the key roles in the T-R method. The effect of the hydration degree of the GF/F filter paper on the optical properties was experimentally analyzed. The results show that the error of transmittance ratio, reflectances ratio and reflectance of the filter paper which is soaked 60~80 min, is the minimum, and their values are 3.0%, 0.5% and 0.5%. On this basis chlorella were used as a research object, the path-length amplification correction factor model of the T-R method was studied. The results show that a polynomial regression model is superior to a linear regression model and a power regression model; and a quadratic polynomial model is selected as the path-length amplification correction factor model of the T-R method. The regression interval is , and the average relative error is 9.19%.
- transmittance-reflectance method /
- path-length amplification correction factor /
- suspended particulate matter /
- quadratic polynomial

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参考文献(11)

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