Yong Kelan

Common and Diverse Characteristics of Three-Dimensional Fluorescence Spectra of Crude Oils

Abstract According to the contour maps of the three-dimensional fluorescence spectra of non-quenching crude oil samples, we have found the common and diverse fluorescence characteristics of various crude oils. the common fluorescence characteristic is that the main peaks of various crude oils are located in around the position of excitation/emission wavelength pair 228nm/340nm. the diversity of fluorescence characteristics can be represented with several indexes α, K, F and R, and these indexes provide measurable parameters for division of fluorescence fingerprints of crude oils. the fluorescence fingerprints of crude oils can be divided into three models named O, B and Q that are corresponding to condensate oil, light oil, and heavy oil respectively.

Synthesis of lanthanide β-diketonates by solid state reaction at low heating temperature

Solid state reactions between β-diketones (HPMBP, HDBM) and LnAc3 · xH2O(La,Nd:x=3/2; Tb:x=4) have been investigated at low heating temperature. Pure compounds of Ln(PMBP)3 and Ln(DBM)3 are obtained by solid state reaction, and characterized by elemental analysis, infrared radiation (IR), X-ray diffraction (XRD) and photoacoustic spectra. The solid state reaction properties of β-diketones and their influences on the structures of products are discussed.

Characteristics of the Three Dimensional Fluorescence Spectra of Fossil Fuels

We have found some fluorescence characteristics of fossil fuels based on the contour maps of the three-dimensional fluorescence spectra of their non-quenching samples. The common fluorescence characteristic is that the main peaks of various fossil fuels are located in the vicinity of excitation/emission wavelength pair 228nm/340nm. The diversity of fluorescence characteristics can be represented with several indexes α,K ,F and R, and these indexes provide measurable parameters for division of fluorescence fingerprints of fossil fuels. The fluorescence fingerprints of fossil fuels can be divided into five models named O, B, Q, P and G that are corresponding to condensate oil, light oil, heavy oil, coal and natural gas, respectively. The technique has a potential application in study of environment pollution on crude oil and geochemical exploration of fossil fuels.