Absorption and adsorption Heavy metals Analysis 13 Atomic absorption spectroscopy 9 Trace elements 7 Research 6 Adsorption 5 Chemistry, Analytic 5 Effect of heavy metals on 5 Carbon, Activated 4 Copper 4 Physiology 4 Purification 4 Sewage 4 Cadmium 3 Dissertations 3 Dissertations, Academic 3 Heavy metals removal 3 Agricultural wastes 2 Algae 2 Brown algae 2 Contamination 2 Environmental aspects 2 Heavy metal content 2 Inductively coupled plasma atomic emission spectrometry 2 Inductively coupled plasma mass spectrometry 2 Lead abatement 2 Metal ions 2 Nanofibers 2 Sorbents 2