Atomic Absorption Spectroscopy Basics

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Atomic Absorption Spectroscopy

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Analytical technique for element analysis

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Principle

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Absorption of light by free atoms

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Application

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Trace metal analysis in samples

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Light Source

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Hollow cathode lamp

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Sample Introduction

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Nebulization into flame or furnace

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Detector

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Photomultiplier tube

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Calibration

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Standard solutions for comparison

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Sensitivity

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High for trace elements

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Interference

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Spectral and chemical interferences

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Flame AAS

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Uses flame to atomize sample