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 Pb solution; 180 seconds sample load time; injection speed 3.5 ml; 10 seconds washing time). (a) Different concentrations of HCl versus signal of pb. (b) eluting speed versus signal of pb, eluting with 3% HCl.