Sample (material)

As a sample for analysis ( usually only sample or swatch called ) to the whole of the material under investigation is known in analytical chemistry. This material can be used as a chemical substance or mixture of gaseous ( like a car exhaust sample, an odor sample ), liquid ( such as drinking water samples, urine samples), solid ( like a rock sample ) or a mixture of different states of aggregation ( for example, a moist soil sample ).

Analyte, matrix, and analysis solution

The analyte or analytes are those substances contained in a sample, on the means of a chemical analysis of a statement is to be taken, that is, which are to be analyzed. A matrix (plural: matrices ) those components of a sample is referred to, which are not analyzed. Is to be determined, for example, how much chromium, a nail, the nail is the sample, the analyte is chromium. Iron, carbon and any other substances may be present together make up the matrix. The matrix can complicate the analysis clearly in circumstances such as when the analyte is only a very small portion of the sample or the matrix interferes with the analysis method.

Analysis solutions are used in chemistry to investigate mixtures ( samples) that are not fluid in nature, but must be examined by a device which can handle only liquid media. To a defined amount of sample is dissolved in a solvent, usually water or ethanol. The resulting analysis solution is filled into the meter. Many instruments are designed only for a certain range, so that it is sometimes necessary, the analysis solution to be diluted further to investigate she can. In this case, the measurement result by the dilution factor to be multiplied to determine the actual concentration. This analysis solutions are needed as for analysis by atomic absorption spectrometer ( AAS) or in the radiocarbon measurement as well as for all types of wet chemical analysis.