摘要
描述了石蜡萃取分光光度测定痕量锰过程。在 pH =8.5～ 10 .0范围内 ,锰和 1- ( 2 -吡啶偶氮 ) - 2 -萘酚显色络合物能定量被石蜡萃取 ,将萃取的固相体系溶解在CHCl3中 ,在λ =570nm处进行光度测定。锰量在 0～ 10 μg/10mL范围内符合比耳定律 ,线性回归方程为 y =0 .0 0 32 +0 .0 4 86x。方法应用于实际样品中痕量锰测定 。
A Procedure is described for the spectrophotometric determination of Mn(Ⅱ) after extraction with molten paraffin.The complex of Mn(Ⅱ) with 1-(2-pyridylazo)-2-naphthol can be extracted quantitatively into paraffin in the range of PH=8.5～10.0.After solidified paraffin is dissolved in CHCl 3,the absorbance is determined at 570 nm,Beer's law is obeyed in the range of 0 to 10 μg Mn/10 mL.The linear regression equation is y=0.0032+0.0486 x.The method has been applied to the determination of trace manganese in actual samples with satisfactory results.
出处
《南昌大学学报（理科版）》
CAS
2000年第2期111-114,共4页
Journal of Nanchang University(Natural Science)
基金
江西省青年自然科学基金资助项目!(962110)
关键词
固液萃取
分光光度法
锰
显色体系
测定
PNA
solid-liquid extraction
spectrophotometry
manganese
1-(2-pyridylazo)-2-naphthol
