摘要
使用两种方法对小麦、玉米、大豆、稻谷的孔隙率进行测定,对影响2种方法测定结果的因素进行探讨。试验得出,计算法和仪器法得到孔隙率相关性公式为y=4.00+0.81x,R2=0.9765。计算法在进行相对密度测定操作过程中,受液体、比重瓶口大小影响比较多,得到的结果不稳定;仪器法测定孔隙率,样品代表性强,检测方法简单、快捷、重复性好,且整个过程是无损操作,便于推广。
The results showed that there were relativity between two results which were gained through the two ways.The formula is y=4.00＋0.81x,R2=0.9765.Determination of relative density using numeration way was effected by kind of liquid and size of pycnometer.Comparatively speaking,determination of porosity using apparatus way was simple,fast and good at precision.
出处
《粮食加工》
2009年第5期35-37,45,共4页
Grain Processing
关键词
粮食
孔隙率
容重
籽粒密度
grain
porosity
bulk density
relative density
