%0 Journal Article %T Adsorptive preconcentration integrated with colorimetry for ultra-sensitive detection of lead and copper %A Savitha, R. %A Mallelwar, Pralay %A Mohanraj, M. %A Renganathan, T. %A Pushpavanam, S. %J Analytical and Bioanalytical Chemistry %V 414 %N 14 %P 4089-4102 %@ 1618-2642 %D 2022-06-01 %I Springer Berlin Heidelberg %~ DeepDyve