分光光度法测定铝表面成膜剂中的氟硼酸根  

Determination of Fluoride Borate in Film-Forming Agent for Aluminum Surface by Spectrophotometry

作　　者：陈泽民[1] 路品[2] 侯海平[1] 张新丽[1] 

机构地区：[1]廊坊师范学院化学与材料科学学院,河北廊坊065000 [2]河北大学化学与环境科学学院,河北保定071002

出　　处：《电镀与环保》2011年第6期36-39,共4页Electroplating & Pollution Control

摘　　要：氟硼酸根能与苯羟乙酸以氢键结合,再与[Fe(Phen)3]2+结合生成具有较大疏水基团的化合物,其具有可被有机试剂萃取的性质。萃取后,采用分光光度法测Fe2+,进而确定氟硼酸根的浓度。通过实验确定了最佳条件:萃取剂为1,2-二氯乙烷,[Fe(Phen)3]2+3.0 mL,1,2二-氯乙烷4.0 mL,pH值为7.5,萃取振荡和静置时间分别为5 min和10 min,最大吸收波长为512 nm。该方法操作简单,共存因素无干扰,用于铝材成膜剂中氟硼酸根的测定,结果令人满意。Fluoride borate can combine hydroxylated acid with hydrogen bonds,then further combine [Fe（Phen）3]2＋ to form a compound with a big hydrophobic group,which can be extracted by organic reagent.After extraction,Fe2＋ can be determined by spectrophotometry,and then the concentration of fluoride borate can be determined.The optimal conditions are determined by experiments： extractant is 1,2-dichloroethane,[Fe（Phen）3]2＋ 3.0 mL,1,2-dichloroethane 4.0 mL,pH 7.5,vibrating time 5 min,vibrating laying time 10 min and maximum of wavelength absorbance 512 nm.This method is easy in operation with no interference by co-factors.It is satisfactory to use this method to determine fluoride borate in aluminum film former.

关 键 词：分光光度法 氟硼酸根 铝材成膜剂 

分 类 号：TQ153[化学工程—电化学工业]