药学英语药学英语 (20).ppt

Unit SevenWhat Do Analytical Chemists Do?Part twoWhat is Analytical Science?v The above description of analytical chemistry provides an overview of the discipline of analytical chemistry.v There have been various attempts to define the discipline more specifically 具体地.v The late Charles N.Reilley said:“Analytical chemistry is what analytical chemists do.”v The discipline has expanded beyond the bounds of just chemistry,and many have advocated 拥 护，支 持 using the name analytical science to describe the field.v This term is used in a National Science Foundation report from workshops on“Curricular 课 程 的 Developments in the Analytical Sciences.”v Even this term falls short of recognition of the role of instrumentation 仪 器 development and application.v One suggestion is that we use the term analytical science and technology.v The Federation of European Chemical Societies held a contest to define analytical chemistry and the following suggestion by K.Cammann was selected.v Analytical chemistry provides the methods and tools needed for insight into 洞 察 our material world for answering four basic questions about a material sample:v What?v Where?v How much?v What arrangement,structure or form?v The Division of Analytical Chemistry of the American Chemical Society provides a comprehensive definition of analytical chemistry,which may be found on their website.It is reproduced 复制 in most part here:v 美 国 化 学 会 的“分 析 化 学 分 类”为 分 析 化 学 提 供 了 一 个全面的定义，可以在其网站查到，此处摘录部分内容:v Analytical chemistry seeks ever improved means of measuring the chemical composition of natural and artificial materials.v The techniques of this science are used to identify the substances which may be present in a material and to determine the exact amounts of the identified substance.v 分 析 化 学 探 索 不 断 改 进 的 方 法，用 以 检 测 天 然 和 人 造 材 料的化学组成。v 此 种 科 学 的 技 术 手 段 用 来 鉴 别 可 能 存 在 于 一 种 材 料 中 的 物质以及测定给定物质的准确含量。