Solid sampling graphite furnace atomic absorption spectrometry for the direct analysis of microextraction solvent bars used for metal ultra-trace pre-concentration

Development of a novel direct magnetic sorbent sampling device by flame furnace atomic absorption spectrometry (DMSS-FF-AAS) using a carbonaceous nanocomposite for highly sensitive determination of cadmium

“…[14][15][16][17][18] Direct solid sorbent sampling (DSSS) as a previous sample treatment has also been successfully applied for improving the sensitivity of atomic absorption spectrometry and for avoiding use of the elution step in the procedure, but such approach is still few exploited. Using electrothermal atomic absorption spectrometry with a graphite furnace (GF AAS), Sant'Ana et al 19 and Takada & Koide 20 used, respectively, polyurethane foam loaded with cobalt and ion-exchange resin loaded with copper for the direct analysis, while González-Álvarez et al 21 used a porous polypropylene hollow ber lled with a solvent for metal ultratrace preconcentration. DSSS has a unique application in FAAS as described by Korn and co-workers, 22 where the sorbent alizarin red-naphthalene loaded with lead was directly analyzed by FAAS.…”