复混肥料中有效磷含量测定方法的改进  

Improved Method for Available Phosphorus Content of Compound Fertilizers

作　　者：周游[1] 杨珊珊[1] 

机构地区：[1]贵州省产品质量监督检验院,贵州贵阳550002

出　　处：《科技视界》2013年第10期32-32,29,共2页Science & Technology Vision

摘　　要：在检测复混肥料中有效磷含量时,国标规定称样采用滤纸包裹置于容量瓶中,本文取消滤纸包裹步骤,采用小漏斗置于容量瓶上直接称样的方法,避免了滤纸破碎后影响试液的过滤速度,在保证精密度和准确度的前提下,大大缩短了检测时间。Detected in compound fertilizer available phosphorus content, the national standard, said sample placed in a volumetric flask with filter paper wrapped, we cancel the filter paper wrapped step, using a small funnel placed the volumetric flask directly on the said kind of method to avoid the filter paperbroken affect the filtration rate of the test solution, under the premise of ensuring the precision and accuracy, greatly reducing the detection time.

关 键 词：有效磷测定 直接称量 过滤速度 检测时间 

分 类 号：TQ444[化学工程—化学肥料工业]