Abstract：Laser method and comprehensive method (pipette method-sieve method) are commonly used to test the sediment grain size characteristics. Due to the differences in testing principles and analysis processes, the test results obtained by these two methods for the same sample are often not completely consistent. In order to explore the commonalities, differences, and correlations between the two methods, and establish a conversion relationship between the results by laser method and comprehensive method suitable for this sea, the authors in this research compared testing results by these two methods from 49 sediment samples in Caofeidian. The results show that: ① Sand content measured by laser method and comprehensive method is roughly equal. And silt content measured by laser method is generally higher than the result by comprehensive method, and the clay content measured by laser method is generally lower than the result by comprehensive method. ② The difference between laser method and pipette method mainly occurs at 10φ, and the clay content by comprehensive method significantly increased. The difference between laser method and sieve analysis method mainly occurred in the coarse end grain, and the coarse end grain content is generally higher measured by laser method. ③ The correlation between laser method and comprehensive method in grain size parameter regression analysis gradually decreases as the grain size decreases. The slope and intercept of the gran size parameter regression equation also do not have a unified conversion relationship with previous research results. It is found that laser method is feasible in measuring the grain size characteristics of sediments, and a data conversion model was established between laser method and comprehensive method in Caofeidian. The data results obtained by these two methods can be converted to each other with a grain size range of [-1, 4]φ. The difference of grain size characteristics by laser method and comprehensive method is clarified, which can be used as a reference for the measurement of grain size characteristics of sediments and a improvement of testing methods and procedures.
[1] 刘雪梅,黄元仿.应用激光粒度仪分析土壤机械组成的实验研究[J].土壤通报,2005,36(4):579-582. Liu X M,Huang Y F.An experiment study on employing laser grain-size analyzer to analyze soil mechanical composition[J].Chinese Journal of Soil Science,2005,36(4):579-582. [2] 李学林,李福春,陈国岩,等.用沉降法和激光法测定土壤粒度的对比研究[J].土壤,2011,43(1):130-134. Li X L,Li F C,Chen G Y,et al.Comparative study on grain-size measured by laser diffraction and sedimentation techniques[J].Soils,2011,43(1):130-134. [3] Pieri L,Bittelli M,Pisa P R.Laser diffraction,transmission electron microscopy and image analysis to evaluate a bimodal Gaussian model for particle size distribution in soils[J].Geoderma,2006,135:118-132. [4] Eshel G,Levy G J,Mingelgrin U,et al.Critical evaluation of the use of laser diffraction for particle-size distribution analysis[J].Soil Science Society of America Journal,2004,68:736-743. [5] 朱瑜,张卓栋,刘畅,等.激光粒度仪与吸管法测定土壤机械组成的比较研究——以不同退化程度栗钙土为例[J].水土保持研究,2018,25(3):62-67,204. Zhu Y,Zhang Z D,Liu C,et al.Comparison of laser diffraction method and pipette method on soil particle size distribution determination:A case study of variously degraded Kastanozem[J].Research of Soil and Water Conservation,2018,25(3):62-67,204. [6] 王大安,刘刚,王翔鹰,等.用激光法和吸管法测定东北黑土区侵蚀泥沙颗粒组成的差异分析[J].中国水土保持科学,2016,14(1):114-122. Wang D A,Liu G,Wang X Y,et al.Comparative study on particle size distribution of eroded sediment by laser method and pipette method in black soil region of Northeast China[J].Science of Soil and Water Conservation,2016,14(1):114-122. [7] 仝长亮,高抒.江苏潮滩沉积物激光粒度仪与移液管-筛析分析结果的对比[J].沉积学报,2008,26(1):46-53. Tong C L,Gao S.Comparison between grain size data by laser and pipette-sieve methods for tidal flat sediments on Jiangsu coast[J].Acta Sedimentologica Sinica,2008,26(1):46-53. [8] Ramaswamy V,Rao P S.Grain size analysis of sediments from the Northern Andaman Sea:Comparison of laser diffraction and sieve-pipette techniques[J].Journal of Coastal Research,2006,22(4):1000-1009. [9] 杨金玲,张甘霖,李德成,等.激光法与湿筛-吸管法测定土壤颗粒组成的转换及质地确定[J].土壤学报,2009,46(5):772-780. Yang J L,Zhang G L,Li D C,et al.Relationships of soil particle size distribution between sieve-pipette and laser diffraction methods[J].Acta Pedologica Sinica,2009,46(5):772-780. [10] Zhu H,Bing H J,Yi H P,et al.Spatial distribution and contamination assessment of heavy metals in surface sediments of the Caofeidian adjacent sea after the land reclamation,Bohai Bay[J].Journal of Chemistry,2018,2018:2049353. [11] Folk R L,Ward W C.Brazos River Bar:A study in the significance of grain size parameters[J].Journal of Sedimentary Petrology,1957,27(1):3-26. [12] Blott S J,Pye K.Particle size distribution analysis of sand-sized particles by laser diffraction:An experimental investigation of instrument sensitivity and the effects of particle shape[J].Sedimentology,2006,53(3):671-685. [13] Konert M,Vandenberghe J.Comparison of Laser grain size analysis with pipette and sieve analysis:A solution for the underestimation of the clay fraction[J].Sedimentology,1997,44(3):523-535. [14] 王伟鹏,刘建立,张佳宝,等.基于激光衍射的土壤粒径测定法的评价与校正[J].农业工程学报,2014,30(22):163-169. Wang W P,Liu J L,Zhang J B,et al.Evaluation and correction of measurement using diffraction method for soil particle size distribution[J].Transactions of the Chinese Society of Agricultural Engineering,2014,30(22):163-169. [15] 蓝先洪,张志珣,李日辉,等.南黄海沉积物不同粒度分析结果的对比研究[J].海洋地质动态,2006,22(10):5-7. Lan X H,Zhang Z X,Li R H,et al.Comparison of different grain size analyses for sediments in the south yellow sea[J].Marine Geology Letters,2006,22(10):5-7. [16] 杨竞,崔俊,周莉,等.砂岩筛析法与激光法粒度数据相关关系研究[J].内蒙古石油化工,2010,36(10):8-11. Yang J,Cui J,Zhou L,et al.Study on relative relations in particle sizes with sandstone screening method and laser spectroscopy[J].Inner Mongolia Petrochemical Industry,2010,36(10):8-11. [17] 李文凯,吴玉新,黄志民,等.激光粒度分析和筛分法测粒径分布的比较[J].中国粉体技术,2007,13(5):10-13. Li W K,Wu Y X,Huang Z M,et al.Measurement results comparison between laser particle analyzer and sieving method in particle size distribution[J].China Powder Science and Technology,2007,13(5):10-13. [18] 孟召兰,段宇,陈鹏飞,等.细粉砂岩筛析法与激光法粒度测量相关性研究[J].中国海上油气,2018,30(5):116-122. Meng Z L,Duan Y,Chen P F,et al.Study on correlation of sieving analysis method and laser method for fine siltstone particle size[J].China Offshore Oil and Gas,2018,30(5):116-122.
2023, Vol. 10 
