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.
出处
《电镀与环保》
CAS
CSCD
北大核心
2011年第6期36-39,共4页
Electroplating & Pollution Control
关键词
分光光度法
氟硼酸根
铝材成膜剂
spectrophotometry
fluoride borate
aluminum film former
