Single-Channel Flow Injection Spectrophotometric Determination of Nickel Using Furildioxime in Micellar Solution

Table 1

Selected chemical and FIA parameters obtained with optimization experiments.

Parameter	Studied range	Selected value
Size of sample loop (μL)	50–500	500
Reagent flow rate (mL min^−1)	1.0–4.2	1.2
Length of reaction coil (cm)	50–300	100
pH	3.5–12.0	9.0
Concentration of reagent (%)	0.04–0.25	0.08
Brij-35 (%)	0.01–2.0	0.01
NH4Cl/NaOH (M)	0.04–0.4	0.2