摘要
朗伯(Lambert)-比尔(Beer)定律是光吸收的基本定律,是以化学为支撑学科的本科生和研究生需要掌握的基本原理之一,是分光光度法、比色分析法和光电比色法的定量基础。为了补充现有本科教材中相关内容的不足,从朗伯-比尔定律的发展简史开始,介绍了布格(Bouguer)、朗伯和比尔分别对光吸收定律的贡献,从数学角度说明朗伯定律和比尔定律是如何“联合”统一为朗伯-比尔定律的;在分别介绍了微积分方法和非微积分方法对吸收定律的推导之后,比较了各推导方法的优缺点,并讨论了目前关于该定律的教学中可能存在的一些问题。
Lambert-Beer Law is the fundamental law of light absorption,which is one of the fundamental principles that undergraduate and graduate students in chemistry and related disci-pline need to master.It is the quantitative basis for spectrophotometry,colorimetric analysis,and photoelectric colorimetry.In order to supplement the shortcomings in existing college text-books,this article started with a brief history of Lambert-Beer Law,introduced in turn the con-tributions of Bouguer,Lambert,and Beer to the law of light absorption,then explained from a mathematical perspective how Lambert-law and Beer-law had"combined"and unified into Lam-bert-Beer's law.After introducing the derivation of the absorption law by both calculus and non-calculus methods,the advantages and disadvantages of each derivation method were compared,and some possible problems in the current teaching of this law were also discussed.
作者
王中慧
周慧
任列香
刘红云
晋卫军
WANG Zhong-Hui;ZHOU Hui;REN Lie-Xiang;LIU Hong-Yun;JIN Wei-Jun(Department of Chemistry and Chemical Engineering,Lyuliang University,Lishi 033000,China;College of Chemistry,Beijing Normal University,Beijing 100875,China)
出处
《化学教育（中英文）》
CAS
北大核心
2023年第24期116-122,共7页
Chinese Journal of Chemical Education
基金
山西省2022年度应用型地方本科院校分析化学PBL教学课堂改革研究项目(J20221159)
山西省教育厅新建地方应用型本科院校化工与材料专业(群)人才培养体系建设实践与研究项目(J2020359)
北京师范大学课程思政建设项目。
关键词
朗伯-比尔定律
推导
分析化学
光度分析
Lambert-Beer Law
derivation
analytical chemistry
spectrophotometry
