The basic concepts of colorimetry were expressed by Grassman in 1853.测色学的基本概念早于1853年由格腊斯曼加以阐述.The content of ginsenoside in Panax quinquefolium L was determined by colorimetry.用香草醛-冰醋酸比色法测定西洋参中总皂甙的含量.Methods: The content...
This chapter describes methods of estimating airborne pollutant concentration distrubutions associated with various emission sources.本章论述几种有关各种排放源的大气污染物浓度分布的估算方法.Hyetographs are important in estimating stormflow hydrogra...