Cloud point extraction for determination of lead in blood samples of children, using different ligands prior to analysis by flame atomic absorption spectrometry: A multivariate study

► Trace levels of lead in blood samples of healthy children and with different kidney disorders ► Pre-concentration of Pb+2 in acid digested blood samples after chelating with two complexing reagents. ► Multivariate technique was used for screening of significant factors that influence the CPE of Pb+2 ► The level of Pb+2 in diseased children was significantly higher than referents of same age group.