火焰原子吸收光谱法测定复(混)合肥料中的钾

确定了利用火焰原子吸收分光光度法测定复(混)合肥料中的氧化钾含量的最佳工作条件,测定的含量范围较大,可达200 mg/L,干扰易消除,操作步骤少、简便,条件易控制,分析速度快,使用仪器设备少,消耗试剂量小,工作时间大大缩短,劳动强度大大降低,加标回收率达95 %～106.8 %,RSD(11)为1.3 %,结果稳定可靠.经大量试验证明,采用此法测定,方便快速,结果令人满意.

The Test of Potassium Oxide on Mixed and Compound Fertilizer by Flame Atomic Absorption Spectrometry

The common ways of determining potassium oxide on mixed and compound fertilizer were FTPB weight,but the ways were too much shortage,such as too much work conditions,too complex operation steps,too uncontrolling reasons,too low determining speed,too large consumings tor medicions,too large working times,too large working strength,too unstable datas.The detection founded the west determining conditions for determining potassium oxide on mixed and compound fertilizer with flame atomic absorptiom.Spectrometry,it had large ranges for determining which were 200 mg/L,small disturb,little operation steps,ersy controlling reasons,quick determining speeds,little machines and glasses we used,little consumings for medicions,less shorter working times,less working strength,high recoveries for adding standard matter which were 95 %-106.8 %,low RSD(RSD(n =11) were 1.3 %),much stable datas.Through many tests we know: the detection was a convenient,quick,agreeding method we used.