laimennusvirheen

Laimennusvirhe, a Finnish term, translates to "dilution error" or "attenuation error" in English. It refers to a phenomenon in analytical chemistry where the concentration of a substance in a sample is inaccurately determined due to an incorrect dilution or incomplete extraction process. This error can lead to an underestimation of the true concentration of the analyte.

Several factors can contribute to laimennusvirhe. If a sample is diluted with a volume of solvent that is less than what is required for the intended dilution factor, the resulting concentration will appear higher than it actually is. Conversely, if the dilution is greater than intended, the concentration will be underestimated. Incomplete extraction of the analyte from its matrix can also be considered a form of laimennusvirhe, as not all of the substance present is transferred to the solution being analyzed, leading to a lower measured concentration.

Contamination during the dilution process, where an extraneous substance is introduced, can also skew results. Similarly, improper mixing of the diluted solution can result in a non-uniform distribution of the analyte, leading to inaccurate measurements depending on where the sample for analysis is taken. Evaporation of the solvent during or after dilution can also artificially increase the concentration.

To avoid laimennusvirhe, meticulous attention to detail is crucial during sample preparation. This includes using calibrated volumetric glassware, ensuring accurate measurement of both the original sample and the diluent, and thoroughly mixing the final solution. Proper extraction techniques and awareness of potential contaminants are also vital for obtaining reliable analytical results.