Primary speciation of eight elements (Cu,Zn,Mn,Fe,Ca,Mg,Sr and Ni)in ligusticum wallichii Franch was studied by atomic absorption spectrometry.The contents of eight elements in six samples were determined,and the spec...Primary speciation of eight elements (Cu,Zn,Mn,Fe,Ca,Mg,Sr and Ni)in ligusticum wallichii Franch was studied by atomic absorption spectrometry.The contents of eight elements in six samples were determined,and the species distributions of the primary speciation analysis,such as extractive rate and immerse-residue ratio,were also calculated.The results showed that the concentration of eight element in the residue was high,and extractive rate of Ni and Mg was higher than other elements.展开更多
We Investigated the spectra of Resonance Rayleigh scattering(RRS)for methyl red-heparin system,the spectra characteristics,the primary efiect factors and the optimum condition of the reaction.The resuIts show that the...We Investigated the spectra of Resonance Rayleigh scattering(RRS)for methyl red-heparin system,the spectra characteristics,the primary efiect factors and the optimum condition of the reaction.The resuIts show that the method was based on the discoloration reaction between heparin and methyl red dyes in the pH 6.6 Britton-Robinson solution.The linear range was 0.006μg/mL-4.00μg/mL.The reductiOn in absorbance is directly proportional to the concentration of heparin.and the efiect of surfactants and coexistion substance was investigated.The method has been applied to determine the potency of heparin sodium injection and the heparin sodium in human serum with satisfactory results.展开更多
文摘Primary speciation of eight elements (Cu,Zn,Mn,Fe,Ca,Mg,Sr and Ni)in ligusticum wallichii Franch was studied by atomic absorption spectrometry.The contents of eight elements in six samples were determined,and the species distributions of the primary speciation analysis,such as extractive rate and immerse-residue ratio,were also calculated.The results showed that the concentration of eight element in the residue was high,and extractive rate of Ni and Mg was higher than other elements.
文摘We Investigated the spectra of Resonance Rayleigh scattering(RRS)for methyl red-heparin system,the spectra characteristics,the primary efiect factors and the optimum condition of the reaction.The resuIts show that the method was based on the discoloration reaction between heparin and methyl red dyes in the pH 6.6 Britton-Robinson solution.The linear range was 0.006μg/mL-4.00μg/mL.The reductiOn in absorbance is directly proportional to the concentration of heparin.and the efiect of surfactants and coexistion substance was investigated.The method has been applied to determine the potency of heparin sodium injection and the heparin sodium in human serum with satisfactory results.
