1, 10-PHENANTHROLINE (PL) IS THE PARENT OF AN IMPORTANT CLASS OF CHELATING AGENTS THAT HAS EXCELLENT PROPERTIES; THE PLANAR NATURE OF 1, L0-PHENANTHROLINE IS ITS ABILITY TO PARTICIPATE AS EITHER AN INTERCALATING OR GROOVE-BINDING SPECIES WITH DNA AND RNA AND THE RIGID PL MOLECULE DEMONSTRATED DISTINCT EFFECTS ON IN VITRO CULTURED CELLS [1]. THEREFORE DETERMINATION OF THIS COMPLEX AND PL SINGLY, IN BIOLOGICAL SAMPLES IS VERY IMPORTANT. WE USED PHOTOTHERMAL SPECTROMETRY FOR DETERMINATION OF TRACE AMOUNT OF SAMARIUM COMPLEX AND PL IN A MICROCHIP.PHOTOTHERMAL SPECTROMETRY IS A CLASS OF HIGHLY SENSITIVE METHODS BASED ON MEASUREMENT OF AMOUNT OF THERMAL ENERGY RELEASED BY A SAMPLE SUBSEQUENTLY TO LIGHT ABSORPTION AND NONRADIATIVE RELAXATION OF THE EXITED SPECIES. WHEN A SAMPLE IS IRRADIATED BY A LASER BEAM, LOCAL HEATING NEAR THE BEAM AXIS PRODUCES A TRANSVERSE TEMPERATURE GRADIENT WHICH SUBSEQUENTLY INDUCES THE FORMATION OF A REFRACTIVE INDEX GRADIENT. MOST GENERALLY, THE REFRACTIVE INDEX IS LOWERED BY THE TEMPERATURE RISE SO THAT THE REFRACTIVE INDEX GRADIENT IS NEGATIVE AND BEHAVES LIKE A DIVERGING LENS. PRACTICALLY, ONE LASER IS USED TO CREATE PHOTOTHERMAL EFFECT AND A SECOND LASER IS USED TO MONITOR THE THERMAL LENS [2]. THERMO OPTICAL SPECTROSCOPY IS AMONG THE METHODS THAT HAVE ALREADY PROVEN THEIR EXPEDIENCE IN COMBINING WITH CHEMICAL MICROCHIP, AS WELL AS FOR OTHER MICROSCALE MEASUREMENTS. THERMAL LENS MICROSCOPY SHOWED MUCH POTENTIAL WHEN DEALING WITH ULTRATRACE ON-CHIP DETERMINATION OF VARIOUS SUBSTANCES AND THE ANALYSIS OF BIOLOGICAL MATERIALS [3].

A COLLECTION OF NOVEL NANO COMPOSITES, INCLUDING DIFFERENT LOADING LEVELS OF TIN-DERIVATIVE SANDWICH TYPE POLYOXOMETALATE (10%−30%) ON SM-DOPED TIO2 NANOPARTICLES, WERE PREPARED BY SIMPLE IMPREGNATION METHOD [1-3]. THE CATALYSTS WERE CHARACTERIZED BY FOURIER TRANSFORM INFRARED SPECTROSCOPY (FT-IR), X-RAY POWDER DIFFRACTION (XRD), AND SCANNING ELECTRON MICROSCOPY (SEM).THE RESULTS SHOWED THAT SANDWICH- TYPE POLYOXOMETALATE WAS SUCCESSFULLY LOADED ON THE SM-DOPED ANATASE PHASE TIO2 NANOPARTICLES AND RELATIVELY UNIFORM NANOMETER PARTICLES OF DIAMETER 20-30 NM.THE EFFECTS THE AMOUNT OF LOADING OF TIN-DERIVATIVE SANDWICH TYPE POLYOXOMETALATE, CATALYST DOSE, INITIAL PH AND CONCENTRATION OF DYE SOLUTION ON THE DEGRADATION KINETICS OF METHYL ORANGE UNDER UV LIGHT (L³365 NM) WERE DISCUSSED. KINETICS STUDIES SHOWED THAT THE PHOTO CATALYTIC DEGRADATION OF METHYL ORANGE FITTED THE APPARENT FIRST-ORDER REACTION. METHYL ORANGE WAS TOTALLY DEGRADED IN 3 MINUTES UNDER OPTIMUM CONDITION. THE CATALYST WAS STABLE AND EASILY TO BE SEPARATED FROM REACTION SYSTEM FOR RECOVERY.

EXTRACTANT IMPREGNATED RESIN (EIR) IS A GOOD ALTERNATIVE TO SOLVENT EXTRACTION AND ION EXCHANGE TECHNIQUES FOR SEPARATION AND RECOVERY OF METAL IONS. EIR HAS BEEN WIDELY USED IN THE NUCLEAR METHODS BECAUSE OF ITS SIMPLICITY, FAST AND CHEAP COMPARED TO THE OTHER TECHNIQUES [1-3]...