Minimum Sample size for Statistic of Grain Size Parameters by Field Emission Scanning Electron Microscope

doi:10.7522/j.issn.1000-694X.2016.00056

JOURNAL OF DESERT RESEARCH ›› 2017, Vol. 37 ›› Issue (5): 843-847.DOI: 10.7522/j.issn.1000-694X.2016.00056

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Minimum Sample size for Statistic of Grain Size Parameters by Field Emission Scanning Electron Microscope

Qiu Mengru¹, Li Huiru², Wang Ruxing², Li Jifeng², Zou Xueyong², Kang Liqiang², Chang Chunping¹

1. College of Resources and Environment Sciences, Hebei Normal University, Shijiazhuang 050024, China;
2. State Key Laboratory of Earth Surface Processes and Resource Ecology/MOE Engineering Research Center of Desertification and Blown-sand Control, Beijing Normal University, Beijing 100875, China

Received:2016-03-31 Revised:2016-05-23 Online:2017-09-20 Published:2017-09-20

Abstract

Abstract: It is an effective way for micro-samples of sediments to derive the grain size parameters by suing field emission scanning electron microscope (FESEM), but the key issue of the minimum sample size needs to be solved. The three micro-samples were used, which were dustfall collected in Beijing, light chernozem soil and chestnut soil collected in the northern China respectively; besides, the parameters of mean particle size, standard deviation and standard error, skewness and kurtosis were used as a basis for evaluation. The aim of this study was to use particle images obtained by FESEM to determine the minimum sample size of different mean particle size of micro-samples. The results showed that the minimum sample size of the dustfall with the mean particle size about 25 μm was 800 particles, the minimum sample size of the light chernozem with the mean particle size about 100 μm was 1 100 particles, and the minimum sample size of the chestnut with the mean particle size about 180 μm was 1 200 particles.

Key words: field emission scanning electron microscope, grain size parameter, minimum sample size

CLC Number:

S151.95

Qiu Mengru, Li Huiru, Wang Ruxing, Li Jifeng, Zou Xueyong, Kang Liqiang, Chang Chunping. Minimum Sample size for Statistic of Grain Size Parameters by Field Emission Scanning Electron Microscope[J]. JOURNAL OF DESERT RESEARCH, 2017, 37(5): 843-847.

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Minimum Sample size for Statistic of Grain Size Parameters by Field Emission Scanning Electron Microscope

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