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The species formed by adsorption of trimethylaluminum and dimethylaluminum chloride on y-alumina that has been dehydroxylated at 400 K are identified using infrared spectroscopy. Gas-phase trimethylaluminum dimer is proposed to adsorb via reaction of the bridging methyl groups forming adsorbed dimethylaluminum. A small amount of dimer is also found on the(More)
A Schiff base-type fluorescence probe was prepared for the detection of copper (II) in foodstuffs. The probe is N,N'-bis(pyridoxal phosphate)-o-phenylenediamine (BPPP). It was synthesized by utilizing the Schiff base condensation reaction of pyridoxal 5-phosphate with 1,2-phenylenediamine. BPPP has the properties of high fluorescence stability, good water(More)
In this paper, we report a resonance light scattering (RLS) method for the determination of fructose bisphosphates (FBPs) in water solution using fructose 1,6-bisphosphate (F-1,6-BP) as a model analyte without the procedure of extracting target analyte. The method used a type of modified gold nanoparticles (GNPs) as optical probe. The modified GNPs are(More)
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