Atomic Absorption spectrophotometry examines the concentration of components in a liquid sample based on energy consumed from specific wavelengths of light usually 190 to 900 nm. Atomic absorption spectrophotometers usually include a fire burner to atomize the sample most commonly a hollow cathode lamp, a monochromator and a photon detector. Based upon the design, a few atomic absorption spectrometers are equipped with a turret or mended lamp socket which can hold several lamps up to eight to decrease downtime between samples or permit for sequential analysis. Atomic Absorption spectrometers are used in the pharmaceutical industry during drug development. In atomic absorption spectrometry, a sample is atomized, usually by a flame or graphite furnace, and spread into the light.
A sensor measures the amount of absorption in the sample and compares it to a reference with a known concentration of the component in question to find out its concentration in the sample. A few of the specifications to know about before buying an atomic absorption spectrometer are its wavelength range, which sort of atomizer it uses, if it can do multiple tests for several components, and if it is a single beam, double beam or both kinds of light source. AAS Is also utilized in food and drink, water, and clinical evaluation. Additionally, it is utilized in mining operations, for example to ascertain the percentage of valuable metal in stones.
The presence of particulates in Samples or criteria used for atomic absorption spectroscopy can lead to blockages in the atomization systems, prevent effective and reproducible spraying of the sample solution to the fire, this congestion or build-up of particulate matter may result in drift and a loss of sensitivity. The high sensitivity of AAS means That any metal ions present in the water used to prepare samples, blanks or criteria are likely to interfere through evaluation. Certainly, any metal being measured must be absent but also other metals may increase the background noise, lowering the total sensitivity of this technique. Additionally, it is important to take into account the potential contamination of any labware used for sample preparation, as common laboratory washing detergents may contain magnesium or sodium salts.