Comparar métodos

	Espectroscopia de Absorção Atômica	Espectrometria de Plasma Indutivamente Acoplado
Área	Química analítica	Química analítica
Família	Process / pipeline	Process / pipeline
Ano de origem	1955	1964
Autor original	Alan Walsh	Stanley Greenfield
Tipo	elemental analysis technique	multi-element analysis technique
Fonte seminal	Walsh, A. (1955). The application of atomic absorption spectra to chemical analysis. Spectrochimica Acta, 7, 108–117.	Greenfield, S., Jones, I. L., & Berry, C. T. (1968). High-pressure plasma jet source for use in atomic spectroscopy. Analyst, 93(1108), 694–697.
Outros nomes	AAS, flame AAS, graphite furnace AAS, GFAAS	ICP-OES, ICP-AES, ICP-MS, plasma emission spectroscopy
Relacionados	5	5
Resumo	Atomic absorption spectroscopy is an analytical technique that measures the concentration of metal elements by detecting the absorption of light by ground-state metal atoms in the gaseous state. Invented by Alan Walsh in 1955, it rapidly became the standard method for trace metal analysis in environmental, clinical, agricultural, and industrial samples. Atomic absorption spectroscopy's sensitivity, selectivity, and simplicity make it indispensable for monitoring toxic metals, nutritional minerals, and elements in complex matrices.	Inductively coupled plasma spectrometry is a powerful multi-element analytical technique that ionizes a sample in a high-temperature plasma and measures the emitted light (ICP-OES) or ion masses (ICP-MS) to determine elemental concentrations. Developed in the 1960s by Stanley Greenfield, ICP techniques have become the standard for trace element analysis across environmental, geological, biological, and industrial fields. The method combines exceptional sensitivity, wide dynamic range, and the ability to analyze dozens of elements simultaneously.