薄层树脂相吸光光度法测定痕量磷的研究  

STUDY ON THE THIN^LAYER RESIN-PHASE SPECTROPHOTOMETRY FOR DETERMINATION OF TRACES PHOSPHORUS

作　　者：闫永胜[1] 李荷[1] 赵干卿[1] 李松田[1] 程永华[1] 王海红 

机构地区：[1]河南平顶山师范高等专科学校化学系,平顶山467000

出　　处：《离子交换与吸附》2000年第2期175-178,共4页Ion Exchange and Adsorption

基　　金：河南省自然科学基金

摘　　要：本文提出了在强酸性条件下，以薄层树脂相吸光光度法测定磷。此方法灵敏度高（ε_（７５０）９．７ ｘ １０～５），比液相光度法提高１１倍，精密度理想（测含磷 １μｇ／ｍｌ样品 ６次， ＲＳＤ＝０．８３％）．实测天然水中磷，线性范围（定容 ２５ｍｌ） ０．１－１．２μｇ／ｍｌ，回收率： ９７％～１０１％。A new analytical method with the thin-layer resin-phase spectrophotometry for determination of traces phosphorus in strong acidic medium was developed. This method has high sensitivity (ε _(705)=9.7 X 10_5mol/L.cm), it is 11 times as high as the solution spectrophotometry and good accuracy (10μg P was measured for 6 times, RSD=0.83%). Its linear range is 0.l～l.2μg/ml, which it was obtained by determination of phosphorus in the natural water The method give a recovery percentage of 97%～101%.

关 键 词：测定 磷 薄层树脂相吸光光度法 痕量分析 天然水 

分 类 号：O613.62[理学—无机化学] O657.32[理学—化学]