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

Table 4

Performance data for the on-line ion-exchange preconcentration HG-AFS system.

Calibration graph, 0–10 𝜇g⋅l^−1
Regression equation (fluorescence intensity versus concentration (𝜇g⋅l^−1)	𝑌=102.33𝑥+13.52
Correlation coefficient	0.9991
Sampling frequency	15 h^−1
Enrichment factor	40
Detection limit (3𝜎)	0.0031 ng⋅ml^−1
Relative standard deviation(4 ng⋅ml^−1 of Pb, 𝑛=11)	3.78%
Sampling consumption	10.5 mL