Solid sample graphite furnace atomic absorption spectroscopy for supporting arsenic determination in sediments following a sequential extraction procedure

摘要: Abstract Solid sample graphite furnace atomic absorption spectroscopy (SS-GFAAS) has been proposed since its appearance as a good alternative to wet methods of analysis in many matrices. Here, we examine the use SS-GFAAS for total and leachable arsenic determination sediments from distinct origins. Our direct seven selected was not always free spectral matrix interference, but spectroscopic technique gave very results (a) measurement solid residues range leaching processes, (b) (HNO3 test) (c) evaluation potential remobilisation (modified BCR three-step sequential extraction scheme). For optimised instrumental conditions, limit 0.44 mg kg−1 long-term reproducibility between 10–15%. The sum HNO3 65% residual fraction, recoveries 72 118% content. These are other cumbersome involving HF.