Selective Extraction and Determination of Chromium Concentration Using Luffa cylindrica Fibers as Sorbent and Detection by FAAS

Table 2

Interference factor obtained to evaluate the influence of possible interfering ions.

Interferent ion	Concentration (mg·L^−1)	I.F
Cu^2+	1.0	1.03
Fe^3+	0.5	0.92
Mn^2+	0.2	1.07
Zn^2+	1.0	1.00
Ca^2+	1.0	1.04
Mg^2+	1.0	1.07
Na^+	0.5	1.00
K^+	0.5	1.00