SCH 2304 Analytical Chemistry by Prof Gachanja
What is analytical chemistry (Analytical Science in the broad sense?)
It is a science dealing with the determination of qualitative and quantitative composition of matter, including all techniques and methods for obtaining
information regarding composition, identity, purity and constitution of matter.
It is a problem solving science. It is the problems that will require analysis, answering questions like what is it? ; how much is present?
Any examples of problems that have required analytical chemistry analysis?
Professional bodies of chemists
Eg RSC, ACS, African based such as KCS
Titles for use with name. MRSC, AC
Analytical process
important to define
the problem. It may be
necessary to interact
what is the with the person who
problem? requires the analysis
1
, Formulate the there is need for
questions that seek chemist to be involved
answers at this stage
what to measure or observe, what method? Experimental design?
qualitative or quantitative
will advice on how simple experiments to
A need to agree sampling will be done. give yes/no answers should be
on the accuracy required representative, storage? done first before accurate
and reproducibility sought Laboratory subsamples. determinations.
if accuracy, for experiments,
reproducibility, precision sought Experiments. design them to answer the
are not obtained, then a Calibrations and questions. Consider labour
decision to accept or reject the standardization of costs, capital, equipments.
data. If reject, then redesign solutions and equipment. Industry does analysis to stay
and repeat the experiment Measurement of sample in business not vice versa!
Data treatment. Data
reduction - graph plots,
regression, statistical
treatment. Precision and
reproducibility found
Answer, which is used
to find a solution to the
original problem
The analytical chemist ends up dealing with a broad range of people and ideas, eg financiers, operators, farmers. Communication is vital. When in the
laboratory, the others depend on chemists care, experience, knowledge and honesty.
2
What is analytical chemistry (Analytical Science in the broad sense?)
It is a science dealing with the determination of qualitative and quantitative composition of matter, including all techniques and methods for obtaining
information regarding composition, identity, purity and constitution of matter.
It is a problem solving science. It is the problems that will require analysis, answering questions like what is it? ; how much is present?
Any examples of problems that have required analytical chemistry analysis?
Professional bodies of chemists
Eg RSC, ACS, African based such as KCS
Titles for use with name. MRSC, AC
Analytical process
important to define
the problem. It may be
necessary to interact
what is the with the person who
problem? requires the analysis
1
, Formulate the there is need for
questions that seek chemist to be involved
answers at this stage
what to measure or observe, what method? Experimental design?
qualitative or quantitative
will advice on how simple experiments to
A need to agree sampling will be done. give yes/no answers should be
on the accuracy required representative, storage? done first before accurate
and reproducibility sought Laboratory subsamples. determinations.
if accuracy, for experiments,
reproducibility, precision sought Experiments. design them to answer the
are not obtained, then a Calibrations and questions. Consider labour
decision to accept or reject the standardization of costs, capital, equipments.
data. If reject, then redesign solutions and equipment. Industry does analysis to stay
and repeat the experiment Measurement of sample in business not vice versa!
Data treatment. Data
reduction - graph plots,
regression, statistical
treatment. Precision and
reproducibility found
Answer, which is used
to find a solution to the
original problem
The analytical chemist ends up dealing with a broad range of people and ideas, eg financiers, operators, farmers. Communication is vital. When in the
laboratory, the others depend on chemists care, experience, knowledge and honesty.
2
