消光系数（英文名：extinction coefficient）是被测溶液对光的吸收大小值。被测溶液浓度高，溶液显色后颜色深，对光吸收大，光透射率低，反之就小。同种溶液对不同波长的光谱有不同的吸收峰，为了提高灵敏度，一般选用光的互补色来作为波长的优选条件，蓝色对黄色光是互为补色，595nm波长正是此范围，可以测出最大吸收值，提高了灵敏度。而465nm是绿色光，蓝色溶液吸收低，灵敏度自然低了。
... extinction ratio消光比；消减比率 extinction coefficient消光系数 mass extinction大量消亡 ...
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rved panicltype may be better than the semi-erect panicle type. Panicle type is also one of the important factors which affects the extinction coefficient.
穗型也是影响消光系数的重要因素之一,在比较不同穗型品种的冠层特征时,以消光系数作为综合指标有一定局限性。
参考来源 - 期刊学术社区Then the extinction coefficient of aerosol is inversed using Fenald method from the measurements of airborne micro-pulse signal.
然后利用Fernald方法从回波信号反演大气气溶胶消光系数。
参考来源 - 微脉冲激光雷达飞行实验研究The article validates difference between experiment data and attenuation coefficient whose calculation depends on typical aerosol model by experiment of laser atmosphere attenuation in Suizhong area, namely, the aerosol model is different from actual aerosol condition.
本文通过在绥中地区多种天气下进行的1.06μm激光大气衰减实验,验证了依据气溶胶大气模型数据计算得到的消光系数与真实数据存在较大误差,即典型气溶胶模式与绥中地区实际气溶胶情况不一致。
参考来源 - 气溶胶粒子特性对激光衰减系数的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
气溶胶消光系数与质量浓度的相关性研究。
Study on relationship between extinction coefficient and mass concentration.
研究了两种微藻液消光系数的波长分布特征。
The extinction spectra of two species of microalgae suspension were inspected.
分子的消光系数等于入射光和透射光强度对数的比。
The molecular extinction coefficient is equal to the ratio of the log of the intensity of the incident and emergent light .
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