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激光粒度仪的广泛应用带来了与历史数据的对比问题,因此需要建立激光粒度仪与早期分析结果之间的关系。根据江苏海岸潮滩沉积物样品的激光粒度仪和移液管—筛析法分析,对粒度参数、粒度组分等进行了对比,对两种方法的差异进行了分析。结果表明,对于江苏潮滩沉积物粒度参数中平均粒径的激光粒度仪与移液管—筛析分析结果之间有良好的线性关系;筛分法测得的粗颗粒物质较激光法偏少,而移液管法法测得的细颗粒物质较激光法偏多;将样品分类之后再进行两种方法所获粒度参数的回归分析,相关性得以提高,说明不同粒度组成的沉积物对分析结果的对比有不同的影响。两种方法之间的换算关系不仅与研究区域有关,而且与沉积物本身的粒度组成有关。
The widespread use of laser particle sizers has led to contrast with historical data and therefore the need to establish the relationship between laser particle sizers and early analysis results. Based on the laser particle sizer and pipette - sieve analysis of sediment samples from coastal tidal flat of Jiangsu Province, the grain size parameters, grain size components and so on were compared and the differences between the two methods were analyzed. The results showed that there was a good linear relationship between the laser particle size analyzer and the results of pipette-sieve analysis for the average particle size of sediment in Jiangsu tide sediments; the coarse particles measured by sieving method were less than the laser method , While the micropipette method measured by the pipette method is much more than the laser method. After the samples were classified, the regression analysis of the particle size parameters obtained by the two methods was carried out, the correlation was improved, indicating that the analysis of the sediments with different particle sizes The results of the contrast have different effects. The conversion between the two methods is not only related to the study area but also to the grain size composition of the sediment itself.