Abstract：In order to receive sample information as much as possible a raw-sample X-ray diffraction (XRD) method was described to quantitatively analysis the amount of amorphous materials(AM) in PM10 aerosol sample collected with glass fiber filter. A series of crystalline samples were artificially prepared and collected with glass fiber filters based on the composition of PM10.According to the fitting results, a theoretical formula was deduced to calculate the diffraction intensities of the filters under different amount of samples. The diffraction intensity of AM in atmospheric sample can be obtained by eliminating the filter’s diffraction effect on the substrate. Amorphous carbon was used to simulate the atmospheric AM. By measuring the diffraction intensities of pure carbon and blank glass fiber filter, the reference intensity K of pure carbon to blank glass fiber filter was derived as 0.59, and the mass percentage of AM can be obtained by the adiabatic method. With this raw-sample XRD method, a series of inhalable particles samples collected in winter 2010 in Beijing were analyzed, and the mass percentages of AM contained were estimated as 10.44%, 13.83%, 15.12%, 15.88% and 11.96% respectively.
范二平, 王河锦. 可吸入颗粒物中非晶质含量的原样XRD分析[J]. 中国环境科学, 2011, 31(12): 1951-1957.
FAN 二Ping, WANG He-Jin. A raw-sample XRD method for quantitative analysis of amorphous materials in atmospheric inhalable particles. . CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(12): 1951-1957.
