Analytical ChemistryIntroduction

To define what analytical chemistry is;To identify the difference between qualitative and quantitative analysis;To differentiate and familiarize among gravimetric, volumetric and instrumental methods of analysis;To outline the steps involved in a typical quantitative analysis;Participate in class discussion;Appreciate the broad areas in which Analytical Chemistry is commonly involved.Objectives:

What is Analytical Chemistry?

What is Analytical Chemistry?

ClassificationA qualitative method yields information about the identity of atomic or molecular species or the functional groups in the sample.A quantitative method in contrast, provides numerical information as to the relativeamount of one or more of these components.

Nutritional Facts Label

Areas in which Analytical Chemistry is commonly involved

Category of Analytical Methods

Methods of AnalysisMethod in which weight of substance is measured.Gravimetric Analysis

Methods of AnalysisRefers to measurement of a volume.Volumetric or Titrimetric Method

Methods of AnalysisMethods are based on measurement of some physical and chemical property, through the use of instruments.Physicochemical (Instrumental)

Steps in Analysis:An analysis involves several steps and operations which depend on: the particular problem your expertise the apparatus or equipment available. The analyst should be involved in every step.

Standards bodieshierarchy

Gary Christian, Analytical Chemistry, 6th Ed. (Wiley)

Different methods provide a range of precision, sensitivity, selectivity, and speed capabilities.

Method in testing Chocolate: CODEX STAN 87-1981, Rev. 1 - 2003

Gary Christian, Analytical Chemistry, 6th Ed. (Wiley)

The sample size dictates what measurement techniques can be used.

Calculate the result and report

Laboratory safety is a must! Learn the rules.

Thank you!

*Before we begin with the serious study of quantitative analysis, it is important that students will have a general understanding of analytical chemistry.

So, today we will discuss Introduction to Analytical ChemistryIn this chapter, we will discribe what analytical chemistry is, the role played by quantitative analysis, and the general methodology used to carry out quantitative determinations

*Let us first know our objectives in this topic...At the end of this topic, the students will be able to...

*Consumer products....We encounter these products every single day... Do you ever wonder how are these products produced? Are these safe to you and your children?

For chocolates, Have you ever asked yourself what it is in your food that makes it taste so delicious? What are the substances added in chocolates to make it taste so good? Like you cant get enough of it

Chemistry is the study of matter, including its composition and structure, its physical properties, and its reactivity. There are many ways to study chemistry, but, we traditionally divide it into five fields:organic chemistry,inorganic chemistry,biochemistry,physical chemistry, andanalytical chemistry. Although this division is historical and, perhaps, arbitraryas witnessed by current interest in interdisciplinary areas such as bioanalytical chemistry and organometallic chemistrythese five fields remain the simplest division spanning the discipline of chemistry.

*Before we begin with the serious study quantitative analysis, it is important that students will have a general understanding of analytical chemistry.

According to thefreedictionary.comAnalytical means Of or relating to analysis or analytics.Dividing into elemental parts or basic principles

And Chemistry is Thescienceof the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems.

Therefore, Analytical chemistry is

Analytical chemistry seeks ever improved means of measuring the chemical composition of natural and artificial materialsThe techniques of this science are used to identify the substances which may be present in a material and determine the exact amounts of the identified substances*Basically, analytical chemistry involves testing to analyze and separate substances.Thing around us have chemical substances, from food that we eat, the water that we drink, our cloths, utensils, almost everything*Chemical Analysisare classified into two types of Analysis

Qualitative Analysis Identifying substancesQuantitative Analysis determining the concentration or amount of substances***

*There are subdivisions

*There are subdivisions

*There are subdivisions

*******Antioxidants, such as vitamins C and E and carotenoids, which include beta-carotene, lycopene and lutein, help protect healthy cells from damage caused by free radicals.**Assignment: Study the rules in Laboratory Safety.