不同浓度的LAS的多角度偏振反射光谱研究

本文以十二烷基苯磺酸钠(SDBS)作为主要实验样品,利用偏振二向性反射光度计探究不同浓度的直链烷基苯磺酸盐(LAS)的偏振反射光谱特性与探测方位角、光线入射天顶角、探测天顶角、偏振角、波段间的关系,并与一种家用洗衣粉及蒸馏水的偏振反射光谱曲线作比较．结果表明,LAS溶液的浓度、观测时的几何条件和波段是影响LAS溶液偏振反射光谱特性的主要因子,而且不同LAS浓度间的偏振反射光谱特性会随着观测时的几何条件与波段的变化而出现明显差异,这为偏振遥感在环境上的应用奠定了实验基础．

Study of Multi-angle Polarized Reflectance Spectrum of LAS with Various Concentrations

In this paper, the sodium dodecyl benzene sulfonate (SDBS) is used as a major test sample. The relationship between the polarized reflectance spectrum of linear alkylbnzene sulphonate (LAS) with different concentrations and the detection azimuth angle, detection zenith angle, light incidence zenith angle, polarization angle and waveband is measured by using a polarized bi-directional reflectance detection instrument, and is compared with the polarized reflectance spectrum of detergent and distilled water. The experimental results have shown that the concentration of LAS, the geometrical condition for measurement and the waveband are the main factors to affect the polarized reflectance spectrum of LAS. Moreover, the polarized reflectance spectrum of linear alkylbnzene sulphonate (LAS) with different concentrations can be changed apparently with the variation of the geometrical condition for measurement and the waveband. This work has formed a laboratorial basis for the further research on the application of polarization remote sensing to environment.