Analytical chemistry can be split into two main types:
Most modern analytical chemistry is quantitative. Quantitative analysis can be further split into different areas of study.The material can be analyzed for the amount of an element or for the amount of an element in a specific chemical species. Thelatter is of particular interest in biological systems; the molecules of life contain carbon, hydrogen, oxygen, nitrogen, andothers, in many complex structures.
There are a bewildering array of techniques available to separate, detect and measure chemical compounds.
Analytical methods rely on scrupulous attention to cleanliness, sample preparation, accuracy and precision .
Many practitioners will keep all their glassware in acid to prevent contamination, samples will be re-run many times over, andequipment will be washed in specially pure solvents.
A standard method for analysis of concentration involves the creation of a calibration curve .
If the concentration of element or compound in a sample is too high for the detection range of the technique, it can simply bediluted in a pure solvent. If the amount in the sample is below an instrument's range of measurement, the method of addition canbe used. In this method a known quantity of the element or compound under study is added, and the difference between theconcentration added, and the concentration observed is the amount actually in the sample.
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