SYNTHESS OF MODIFIED NANOPOROUS CARBON ASA NEW SOLD PHASE EXTRACTION ADSORBENT FORDETERMINATION AND REMOVAL OF PANH ORGANIC COMPOUNDS FROMAQUEOUSMEDIA

In this work, CMK-1 mesoporous carbon molecular sieves were synthesized using mesoporous MCM-48 silica as template and then modified by sodium dodecyl sulfate surfactant and Fe ions. This CMK-1 typed ordered nanoporous carbon (CMK-1/SDS-Fe) was investigated as a novel solid phase extraction sorbent for the first time. The structural order and textural properties of the modified synthesized material was studied by XRD and Nitrogen adsorption-desorption analyses, SEM photographs and FT-IR technique. Then this study has investigated the adsorption characteristics of 1,10-Phenanthroline and 2,2 -Bipyridine from aqueous solutions on the new modified nano sorbent by the SPE method and UV spectroscopic technique. Five effective and controllable factors such as solution pH, solution transmissions speed, sorbent mass, eluent volume and eluent flow ate have been optimized. The results showed that dynamic linear range exhibited a good linearity between ranges of 20 and 600 g/L. The limits of detection (based on 3o) for 1,10Phenanthroline and 2,2 -Bipyridine were 8.75 and 10.1 ug/L respectively. Recovery and relative standard deviation (n-6) at 25 g/L level for 1,10-Phenanthroline and 2,2 -Bipyridine were 92.8, 92.2, 2.5 and 1.7% respectively. Finally, extraction and determination of 1,10-Phenanthroline and 2,2 -Bipyridine from real aqueous sample was successfully investigated.

Keywords:

1 , 10-Phenanthroline , 2 , 2 -Bipyridine , SPE , Carbon nanoporous , CMK-1/SDS-Fe