火焰原子吸收光谱法测定高吸水性树脂吸肥量

FAAS Determination of Fertilizer Retention Capacity of Resin with High Hydro-absorptivity

摘要: 高吸水性树脂在铜锌微肥的水溶液经吸水、溶胀、过滤,直接用火焰原子吸收光谱法测定滤液中铜、锌含量,计算出高吸水性树脂对铜、锌吸持量.相对标准偏差小于5%,加标回收率在92.1%~103.6%.

Abstract: A method for the determination of fertilizer retention capacity of highly hydroabsorptive resin was reported.Resin was immersed in the solution of the fertilizer containing micro amounts of Cu(Ⅱ) and Zn(Ⅱ).After water absorbing and expansion,the resin was filtered,and amounts of Cu(Ⅱ) and Zn(Ⅱ) in the resin were determined by FAAS.Results of retention capacity of Cu(Ⅱ) and Zn(Ⅱ) ion by the fertilizer can be obtained via calculation.RSDs of the determination were less than 5% and recoveries were in range of 92.1%-103.6%.