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Papers composed of two parts : a first part , were prepared by reprecipitation method anthracene , perylene , the the three industry benzene and 1 - amino- anthraquinone hydrosol , fluorescence spectra of the three in an aqueous solution , through its corresponding molecular fluorescence spectra comparison and found that the hydrosol of anthracene and perylene fluorescence spectra of redshift , triphenylene 1 - amino- anthraquinone molecule fluorescence to its water sol fluorescent shift , based on fluorescence and molecular structure obtained four sol is overlap gathered together through the interaction between molecules . The second part , respectively, with the three industry as benzene, perylene , and 1 - amino-anthraquinone three sol create three different analytical methods : ( 1 ) at pH = 7.2 to 8.3 range , and trace amounts of aluminum ions triphenylene sol the strong enhancement of the fluorescence spectra (λ ex / λ em = 307/461nm) , within a certain range , the amount of enhancement of the fluorescence intensity and the aluminum ion concentration proportional to the linear range was 8.2 ~ 200μg / L, and the detection limit is 0.15μg / L . Was established as a new method for the determination of trace aluminum . ( 2 ) perylene nanocrystals by the cetyl trimethyl ammonium bromide modified DNA the role of pH 10.3 Tris buffer solution , quenching of the fluorescence intensity , and the 0.02-5.1μg ml -1 within the scope of the quenching in line Stem - Volmer the equation F < / sub > / F = 1 K [ Q ] , pursuant to which the establishment of the the perylene nanocrystals fluorescent probe to detect DNA new methods . (3) pH = 6.1 the acidic solution of trace nucleic acid 1 - the resonance scattering aminoanthraquinone light generated enhancement , and enhance a good linear relationship between the degree of concentration of nucleic acids . Accordingly established for the determination of nucleic acids highly sensitive resonance light enhanced analytical methods . The maximum scattering wavelength determination of calf thymus DNA ( CT DNA ) are located in the 374 nm at the optimum conditions the linear range of 4.0 × 10 -8 ~ 2.7 × 10 -6 foot < / sup > g / mL , the detection limit of 22.8 ng / mL , the linear range of determination of salmon sperm DNA ( FS DNA ) of 8.5 × 10 of -8 to 9.1 × 10 -6 < / sup> g / mL, detection limit 26.2ng/mL . The method is simple , easy to operate , good selectivity , high sensitivity for synthetic samples with satisfactory results .
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