A comparison of two digestion methods for the analysis of heavy metals by flame atomic absorption spectroscopy

摘要

Heavy metals in soil samples can be determined by highly sensitive spectroscopic techniques, such as atomic absorption spectroscopy [e.g. Flame Atomic Absorption Spectroscopy (FAAS) and Graphite Furnace Atomic Absorption Spectrometry (GFAAS)] and Inductively Coupled Plasma (ICP) spectrometry [e.g. ICP-Atomic Emission Spectrophotometry (ICP-AES) and ICP-Mass Spectrometry (ICP-MS)]. These techniques require the transformation of a solid sample into solution from which metal concentrations are determined. Heavy metals in soil samples are usually converted to a soluble form through acid digestion methods.