维多利亚艳蓝分光光度法测定镓
Spectrophotometric Determination of Gallium with Victoria Pure Blue BO as Color Reagent
摘 要
以聚乙二醇辛基苯基醚为稳定剂,在pH 2.4的磷酸-磷酸二氢钠缓冲溶液中,维多利亚艳蓝BO与GaI-4反应生成缔合物,缔合物的最大吸收波长560 nm,表观摩尔吸光率5.53×105L·mol-1·cm-1.镓(Ⅲ)的质量浓度在1.3×10-3~7.0×10-2mg·L-1范围内遵守比耳定律.应用此方法测定了煤矸石和煤灰中痕量镓,所得结果与国家标准方法测得的结果相符.其相对标准偏差(n=8)均小于3%.测得方法的回收率97%~101%.
镓
维多利亚艳蓝BO
煤矸石
粉煤灰
Spectrophotometry
Gallium
Victoria pure blue BO
Gangue
Coal ash
Abstract
An association complex between Ga(Ⅲ) (in form of GaI-4) and victoria pure blue BO in a phosphate buffer medium of pH 2.4 and in the presence of OP,was formed,having its absorption maximum at 560 nm.The apparent molar absorptivity (ε560) found was 5.53×105L·mol-1·cm-1.Beer′s law was held in the range of 1.3×10-3-7.0×10-2mg·L-1 of gallium(Ⅲ).The proposed method was used in determination of gallium in samples of gangue and coal ash,results obtained were in consistency with those obtained by the standard method (GB/T 8208-1987),with values of RSD′s (n=8) less than 3%.Results of recovery test found were in the range from 97% to 101%.
中图分类号 O657.3
所属栏目 工作简报
基金项目 上海市世博重大科技专项资助项目(06dz05809);上海理工大学大学生创新基金资助项目(104711)
收稿日期 2008/9/2
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备注陈肖云(1982-),女,广西人,硕士研究生,主要研究方向为环境化学和环保新材料.
引用该论文: CHEN Xiao-yun,SHI Wen-jian,CHEN Shu-wei,SONG Wei,YU Yun,ZHONG Xiao-yong. Spectrophotometric Determination of Gallium with Victoria Pure Blue BO as Color Reagent[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2009, 45(5): 580～582
陈肖云,施文健,陈树薇,宋伟,俞芸,钟晓永. 维多利亚艳蓝分光光度法测定镓[J]. 理化检验－化学分册, 2009, 45(5): 580～582
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参考文献
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【3】HAYATI F,ESMA T,RESAT A,et al.Spectrophotometric determination of gallium(Ⅲ) with carminic acid and hexadecylpyridinium chloride[J].Mikrochim Acta,1998,129(1/2):57-63．
【4】王丽球.吸光光度法测定煤矸石中镓[J].理化检验-化学分册,2003,39(11):659-660．
【5】罗道成,刘俊峰.水杨醛缩-5-碘-8-氨基喹啉显色光度法测定粉煤灰中痕量镓[J].冶金分析,2005,25(5):8-10．
【6】CISTINESCU P,CONSTANTINESCU C,BANATEANU G.Spectrophotometric study of the reaction of tetrachlorogallate anion with victoria pure blue BO[J].Rev Chim,1973,24(9):740-742．
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