Photometer measurement of polydisperse aerosols
Photometer measurement of polydisperse aerosols
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DOI：
10.1016/0021-8502(95)00049-6
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发表时间：
1995-12-01
影响因子：
4.5
通讯作者：
Fabries, JF
中科院分区：
文献类型：
--
作者：
Gorner, P;Bemer, D;Fabries, JF
光度计测量可吸入气溶胶质量浓度在大气污染监测中得到了广泛的应用。利用Mie光散射理论和部分光度计的内置光学参数，对输出信号进行了理论计算，并与实际气溶胶质量浓度进行了关联。质量灵敏度的定义与设备校准常数相结合，使光度计响应偏差的计算成为主要气溶胶参数（折射率、粒子密度、粒径分布）的函数。可吸入部分”（苏德霍尔姆（1989））。occup。医学杂志33,301-320；欧洲脱规范化（1993）EN 481；国际标准组织（1993）DIS 7708；美国政府工业卫生学家会议（1994年）辛辛那提，俄亥俄州，第42-45页)的环境气溶胶被用作计算偏差的参考浓度。建立了四种矿物粉尘及其气溶胶分布的光度计响应偏置图。当仪器与任何其他气溶胶进行校准时，该方法可以估计光度计在测量各种气溶胶时的响应偏差。
The photometer measurement of respirable aerosol mass concentration is widely employed in air pollution monitoring. Using the Mie theory of light scattering and the built-in optical parameters of some photometers, the output signal was theoretically calculated and related to the real aerosol mass concentration. The definition of the mass sensitivity in combination with the device calibration constants enables the photometer response bias calculation as a function of the main aerosol parameters (index of refraction, particle density, particle size distribution). The respirable fraction'(Soderholm (1989) Ann. occup. Hyg. 33, 301-320; Cornite Europeen de Normalisation (1993) EN 481; International Standards Organisation (1993) DIS 7708; American Conference of Governmental Industrial Hygienists (1994) Cincinnati, OH, pp. 42-45) of the ambient aerosol was used as a reference concentration for the calculation of the bias. The photometer response bias maps were built for four mineral dusts and a wide range of their aerosol distributions. The method makes possible an estimation of the photometer response bias in measuring various aerosols when the instrument is calibrated against any other aerosol.