MS2000和LS13320激光粒度仪测定沉积物粒度结果的差异  

Comparison of particle-size results of sediments measured by the MS2000 and LS13320 laser diffraction particle-size analyzers

作　　者：陈莹璐 张玉柱[3] 谭子辉 邹明博 CHEN Yinglu;ZHANG Yuzhu;TAN Zihui;ZOU Mingbo(School of Geography and Tourism,Shaanxi Normal University,Xi＇an 710062,China;College of Urban and Environmental Science,Northwest University,Xi＇an 710127,China;State key laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062,China)

机构地区：[1]陕西师范大学地理科学与旅游学院,陕西西安710062 [2]华东师范大学河口海岸学国家重点实验室,上海200062 [3]西北大学城市与环境学院,陕西西安710127

出　　处：《中山大学学报（自然科学版）》2018年第4期48-55,共8页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家重点研发计划课题(2017YFC1502501); 陕西省自然科学基础研究计划(2018JQ4036);陕西省教育厅专项科研计划项目(17JK077); 西北大学大学生创新创业训练计划(2018263)

摘　　要：目前国内外有多种分析仪器可对沉积物粒度成分进行测定,分析结果可能难以对比,在某种程度上影响了研究结论的可靠性。本文详细对比分析了普遍使用的两种激光粒度仪(MS2000和LS13320)对典型的黄土(L_0、L_1)、古土壤(S0)和古洪水滞流沉积物(SWD)粒度成分的测量结果,结论如下:(1)应用MS2000和LS13320激光粒度仪对沉积样品测量结果的重复性都很好,两种仪器得到的粒度分析结果,完全可以作为恢复古环境信息和鉴别地层的一种非常有效的手段。(2)对于同一个样品中含量相对较少的细颗粒成分(粘粒、细粉沙)和粗颗粒成分(中沙),LS13320激光粒度仪的检测效果要优于MS2000激光粒度仪,因此在实际工作中,要注意使用的数据要建立在同一测量系统内,以便进行资料对比。There are many kinds of laser diffraction particle-size analyzers used to study the particle-size of soil sediments in recent years. The analysis results may be difficult to compare, which affects the reliability of the research conclusion to some extent. The particle-sizes of the loess, paleosol and palaeoflood slackwater deposits （SWD） were measured with Mastersizer2000 by Malvern Instruments and LS13320 by Beckm an Coulter. The repeatedly measured results of an individual sample are very good. Both of two analyzers can be used for extracting palaeoenvironmental information of soil sediments. The LS13320 by Beckm an Coulter is better than the Mastersizer2000 by Malvern Instruments in the detective effect of relatively fine and coarse particles with rather few content. Therefore, the particle size of samples should be obtained and analyzed by the same method in order to compare them with different references.

关 键 词：MS2000 LS13320 激光粒度仪 土壤沉积物 

分 类 号：P333.4[天文地球—水文科学]