Atomic absorption spectroscopy (AAS)
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Atomic absorption spectroscopy (AAS) is a powerful analytical technique used in many scientific fields, including chemistry, biology, and environmental science. It is a type of spectrometry that measures the absorption of light by atoms in a sample, providing information about the elemental composition of the sample.
AAS works by passing a beam of light through a sample containing atoms of interest. The atoms absorb specific wavelengths of light, which can be detected and measured by a detector. The amount of light absorbed is proportional to the concentration of the atoms in the sample.
One major advantage of AAS is its high sensitivity and selectivity. It can detect trace amounts of elements in a sample, making it useful for analyzing environmental pollutants, metals in biological samples, and trace elements in geological samples.
In a recent blog post, AAS was used to analyze the concentration of lead in drinking water samples collected from various locations in a city. The AAS method involved preparing the samples by acid digestion, followed by using a graphite furnace to atomize the sample. The results showed that the lead concentration in some samples exceeded the maximum allowable level, highlighting the importance of regular monitoring of drinking water quality.
AAS is a reliable and widely used analytical technique that can provide accurate and precise results. It is a valuable tool for researchers, analysts, and professionals in many fields and continues to be an essential part of the scientific toolkit.