Masking Agents Evaluation for Lead Determination by Flow Injection-Hydride Generation-Atomic Fluorescence Spectrometry Technique: Effect of KI, L-Cysteine, and 1,10-Phenanthroline

Table 1

Operation parameters of AFS instrument and FIA system.

AFS parameters		Chemical conditions
Argon flow rate (mL min^−1)	400	KBH4	1% (m/v)
Delay time (s)	4	K3[Fe(CN)6]	1.5% (m/v)
Reading time (s)	22	Carrier HCl	1.5% (v/v)
Load sample time (s)	8	HCl medium for sample and standard solutions	1.5% (v/v)
Sample volume (mL)	1.3
Sampling loading flow rate (mL min^−1)	8