Research Article

Trace Lead Measurement and Online Removal of Matrix Interference in Geosamples by Ion-Exchange Coupled with Flow Injection and Hydride Generation Atomic Fluorescence Spectrometry

Figure 3

(a) Effects of eluent acid concentrations and eluting speed (4 ngm l 1 Pb solution; 180 seconds sample load time; injection speed 3.5 ml m i n 1 ; 10 seconds washing time). (a) Different concentrations of HCl versus signal of pb. (b) eluting speed versus signal of pb, eluting with 3% HCl.
101679.fig.003a
(a)
101679.fig.003b
(b)