Old and New Flavors of Flame (Furnace) Atomic Absorption Spectrometry

Table 3

Selected papers using FAAS in chemical speciation and associated to preconcentration strategies.

Sample (s)	Analyte	Remarks	Pre concentration factor	LOD (μg/L)	Complexing agent	Ref.
Tap water, lake water, river, water, seawater, fruit juice, cola, molasses	Fe (III)	The Fe(III)-AMPC was extracted into methyl isobutyl ketone(MIKB) phase in the pH range 1.0–2.5	*	0.24	4-Acetyl-5-methyl-1-phenyl-1H-pyrazole-3-carboxylic acid (AMPC)	[131]
River water, lake water, seawater, SRM 2109, CRM 1643d	Cr(VI) and Pb	Use of the hydrophobic poly-chlorotrifluoroethylene (PCTFE)-beads as on-line preconcentration system	94 for Cr(VI) and 220 for Pb	0.4 and 1.2	Ammonium pyrrolidine dithiocarbamate	[132]
water	Cr(III) and Cr(VI)	On-line preconcentration system based on a llama fiber-packed column with detection in FAAS	32	0.3	**	[133]
Stream water, seawater, tannery waste-water, tobacco, anodic slime, CRM TWDW-500, CRM Sandy Soil C	Cr(III)	Carrier element-free coprecipitation (CEFC), was used a new synthesized organic as coprecipitant (5-chloro-3-[4-(trifluoromethoxy) phenylimino]indolin-2-one)(CFMEPI)	40	0.7	**	[134]

*Not reported; **Not employed.