Definition: The word "absorptiometric" refers to a laboratory technique used in medicine or physiology that measures the concentration of a substance in a sample by comparing it with the concentration of that substance found in a standard solution of the substance. The term comes from the Greek term, which means "to absorb," and is often associated with the term "absorptiometric acid." In the context of medical and scientific settings, this technique involves measuring the concentration of a specific substance in a sample using a liquid standard solution. The absorption of a substance through the walls of a capillary (a thin tube) allows researchers to determine the concentration of that substance in a given sample. The standard solution typically contains known concentrations of the substance being measured and can be used to compare the desired concentration with that found in a standard reference material, such as a stock solution or buffer. Absorptiometric analysis is particularly useful for studying the diffusion of substances across surfaces, as it allows researchers to determine the specific concentration of a substance present on a particular surface or membrane. This technique has been widely used in biomedical research and is an essential tool in fields such as pharmacology, biochemistry, and environmental studies.

absorptiometric