β-环糊精交联聚合物树脂相分光光度法测定水中痕量汞  

DETERMINATION OF HYDRARGYRUM IN WATER WITH β-CYCLODEXTRIN CROSS-LINKED POLYMER BY RESIN PHASE SPECTROPHOTOMETRY

作　　者：赵桦萍[1] 赵丽杰[1] 白丽明[1] 

机构地区：[1]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006

出　　处：《离子交换与吸附》2007年第5期464-468,共5页Ion Exchange and Adsorption

摘　　要：以β-环糊精和环氧氯丙烷为原料合成了环糊精聚合树脂，将其作为显色利2-[5．溴-（2-吡啶偶氮）]-5-二乙氨基苯酚的载体，采用争环糊精-2-[5-溴-（2-吡啶偶氮）]-5-二乙氨基苯酚树脂相分光光度法测定微量汞。配合物的最大吸收波长为585nm，表观摩尔吸光系数为8．17×10^5L／m01．cm，汞含量在0-10μg／25mL范围内服从比尔定律，线性回归方程：y=0．0013＋0．0163x,相关系数r=0．9994，加标回收率为98．5％-101．0％，与双硫腙法相比无显著性差异。该方法已用于工业废水中痕量汞的测定，结果令人满意。β-Cyclodextrinpolymer was synthesized using epichlorohydrin as the cross.link agent. It has been used as a carrier of 2-[5-bromo-（2-pyridylazo）]-5-diethylaminophenol. Solid-phase spectrophotometric method with 13-Cyclodextripolymer and 5-Br-PADAP for determination of trace Hydrargyrum. The maximum absorbance is at 585nm with apparent molar absorption of 8.17×10^5L/mol.cm. The Beer＇s law is obeyed in the range of 0-10μg/25mL. The regression equation of calibration is y=0.0013＋0.0163x with a correlation coefficient of 0.9994 and the rate of recovery is 98.5%-101.0%. The method can be used for the determination of trace Hydrargyrum in water with satisfactory results.

关 键 词：环糊精交联聚合物 树脂相分光光度法 2-(5-溴吡啶-2-偶氮)-5-二乙氨基苯酚 汞 

分 类 号：O652.63[理学—分析化学]