Determination of Trace Antimony (III) in Water Samples with Single Drop Microextraction Using BPHA-[C₄mim][PF₆] System Followed by Graphite Furnace Atomic Absorption Spectrometry

Table 2

The atomic absorbance of three chelating agents in three different extraction solvents.

Chelating agent	Extraction solvent
	CH2Cl2	CHCl3	[C4mim][PF6]
Oxine	0.287	0.274	0.294
Dpy	0.158	0.143	0.176
BPHA	0.322	0.355	0.364