CAJ | 학술논문

依据斯托克斯原理制作了水淘选颗粒物分级装置,考察了流量对于颗粒物分级的影响,确定了适宜的操作流量.同时在选定的实验条件下对现场悬浮颗粒物进行了分级,并用吸管法对方法的分级效率进行了检验.结果表明,水淘选装置对悬浮颗粒物各粒级颗粒物的分级效率在50%～95%之间,分级效果较好.同时运用建立的方法对在长江、长江口以及黄河获得的悬浮颗粒物进行了现场分级,获得了不同粒级悬浮颗粒物,并进而采用改进的SEDEX方法进行了磷的赋存形态分析,结果表明:有机磷、自生磷灰石磷主要存在于细颗粒物中,而碎屑磷则主要集中粗颗粒物中.
의거사탁극사원리제작료수도선과립물분급장치,고찰료류량대우과립물분급적영향,학정료괄의적조작류량.동시재선정적실험조건하대현장현부과립물진행료분급,병용흡관법대방법적분급효솔진행료검험.결과표명,수도선장치대현부과립물각립급과립물적분급효솔재50%～95%지간,분급효과교호.동시운용건립적방법대재장강、장강구이급황하획득적현부과립물진행료현장분급,획득료불동립급현부과립물,병진이채용개진적SEDEX방법진행료린적부존형태분석,결과표명:유궤린、자생린회석린주요존재우세과립물중,이쇄설린칙주요집중조과립물중.
Water elutriation that was based on Stokes' low could separate particles into different size classes. In this study, water elutriation apparatus was applied to explore the water ow rate that affected the efficiency of the water elutriator, and appropriate water ow rate was determined. Water elutriator was also used to separate the suspended particulate maters in field with determined conditions. The efficiency of the equipment was analyzed with the pipe method. The result indicated that the efficiency ranged between 50%～95%, which indicated that water elutriator separate suspended particulate particle by size successfully. In this study, the fractioned suspended particles of Changjiang, Changjiang Estuary and Huanghe were also obtained in field with the water elutriation method and modified SEDEX were applied to distinguish the distribution of different particle phosphorus forms in different particle size classes. The result indicated that while Organic P, and Authigenic P decreased with the increase of particle size, high content Detr-P was found in coarse silt and very coarse silt fractions.