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With the socio-economic development and improved quality of life, people increasingly concerned about the harmful elements in the composition of atmospheric particulate matter mass concentration distribution. A wide range of sources of atmospheric particulate matter, its composition is very complex, especially enrichment of heavy metals harmful to human health. Microwave digestion pretreatment Hydride Generation - Atomic Fluorescence Spectrometry Determination of heavy metals in atmospheric particulate matter samples elements As, Cd, Pb, Hg, Zn. On this basis, the use of different particle sizes of atmospheric particulate matter sampling data from 2007-08 to 2008-07 Baoding, the temporal and spatial distribution of atmospheric particulate matter concentration and seasonal distribution and heavy metals in particle size enrichment and seasonal variation and its source a preliminary study has important practical significance, directly determine the aerosol evaluation of urban atmospheric environmental quality, human health, and the development of prevention and control measures. This paper is divided into five chapters, as described below: The first chapter explains the basis of the status of atmospheric aerosol pollution, the analysis of metal elements in atmospheric particulate matter detection method are reviewed, discussed the synergistic reagent hydride generation system in sensitizing, weaken or eliminate interference, and few of the more important size range of aerosol particles in the metal element content and distribution characteristics of the study In addition, this chapter also provides an overview of the basic atmospheric aerosol particles characterization parameters of aerosol basic features such as: radiation characteristics, particle size distribution, sedimentation rate, and so on. The second chapter is based on observations of the 2007-08 to 2008-07 Baoding, cultural and educational areas of different size of atmospheric particulate matter, study of atmospheric particulate matter concentration and seasonal distribution characteristics, combined with meteorological data to conduct a comprehensive analysis of the variation characteristics of meteorological factors their impact. The results show that, in the area of ??atmospheric particulates highest in winter and lowest in summer. Concentration of TSP and PM10, of PMS and PM2.5 concentration was linearly correlated. Changes in the concentration of particulate matter is largely influenced by the pressure, temperature, wind and various meteorological elements. The special weather fog, dust, rain and snow are an important factor of the particle concentration. Precipitation process the removal of coarse particles and fine particles have more obvious, especially the role of the removal of fine particles. Chapter Microwave Digestion - Hydride Generation - Atomic Fluorescence Spectrometry fast and sensitive determination of different particle size of atmospheric particulate matter samples in As, Cd, Pb, Hg, Zn of the new method. Experiments to optimize the instrumental conditions, sample preparation, inspection and Determination of acidity, the concentration of potassium borohydride, carrier gas flow rate, sensitizing reagent is selected, the quantitative determination of particulate matter in As, Cd, Pb, Hg, Zn content. The results showed that the method of As, Cd, Pb, Hg, Zn, and the detection limit were 0.168μg · L-1, 0.030μg L-1, 0.3101μg · L-1, 0.023μg · L-1, 1.6μg · L-1. The detection low limit, high sensitivity, precision, and quick, convenient, great promotional value in practical work. Chapter from 2007-08 to 2008-07 Baoding different particle sizes of atmospheric particulate matter sampling data, the temporal and spatial distribution of heavy metals, particle size enrichment and seasonal variation, and the source of a preliminary study . The results showed that the primacy of the pollution of the atmospheric particulate matter Zn followed by Pb, As and Cd, Hg of the least polluted. Pb, Zn, Cd mainly enriched in fine particles of 2.5μm in stem, As in the rough distribution similar to the fine particles, however, Hg the stems fine particles of 2.5μm and PM2.5-5, PM5-10 coarse particles more evenly distributed, there is no obvious enrichment. Pb, Hg concentration in winter was significantly higher than in summer; Zn cd spring and summer, autumn and winter, summer and spring of fine particles larger difference, up to 2.5 times; as elements no obvious seasonal variation. Chapter This document is a summary of the atmospheric particulate matter, heavy metals were also prospected.
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