纳米级尘埃粒子标准物质的研制

AbstractAbstractCounter calibration standard material is mainly used for calibration and verification.According to the requirements of the counter calibration standard substance use and JJG1006-1994"level standard material specifications"regulation,discusses the methods inthe development of the series counter calibration standard material.Adopted by the standard material-divinyl benzene copolymerization of styrene,good sphericity crosslinked polystyrene spherical particles as solid particles,chose to goafter distillation,ion,ultra filter membrane filtration water based fluid.Its preparationmethod using artificial add,ultrasonic dispersion of crosslinked polystyrenemicrospheres suspending in the clean liquid foundation load,with a certain solid contentand particle size distribution of uniform stability of standard particle suspension,encapsulated in 20 ml plastic bottle.The uniformity of standard material test (F)of variance analysis,random samplingin the quantity of a good standard material,the results F

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