[1]刘立行,刘旭昆.催化分光光度法测定化工产品中微量铁[J].南京师范大学学报(工程技术版),2005,05(04):072-73.
　LIU Lihang~,LIU Xukun~.Dedermination of Trace Iron in Chemical Products by Catalytic Spectrophotometry[J].Journal of Nanjing Normal University(Engineering and Technology),2005,05(04):072-73.
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催化分光光度法测定化工产品中微量铁
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
05卷
期数:
2005年04期
页码:
072-73
栏目:
出版日期:
2005-12-30

文章信息/Info

Title:
Dedermination of Trace Iron in Chemical Products by Catalytic Spectrophotometry
作者:
刘立行1;  刘旭昆2
1. 辽宁石油化工大学应用化学系, 辽宁抚顺113001;
2. 抚顺乙烯化工厂聚乙烯车间, 辽宁抚顺113004
Author(s):
LIU Lihang~1; LIU Xukun~2
1.Department of Applied Chemistry,Liaoning University of Petroleum and Chemical Technology,Liaoning Fushun 113001,China;2.Workshop of Polyethylene,Fushun Ethene Chemical Plant,Liaoning Fushun 113004,China
关键词:
催化分光光度法;  明胶;  环氧树脂;  甲苯二胺;  铁
Keywords:
ca talytic spectropho tom etry;  ge latin;  epoxy resin;  toluene d iam ine;  iron
分类号:
O657.31;O614.81
摘要:
在稀硫酸介质中,Fe3+能催化过氧化氢氧化中性红使其褪色,据此建立了测定明胶、环氧树脂及甲苯二胺中微量铁的催化分光光度法.对测定条件进行了考察.方法的选择性高,不必进行萃取分离干扰离子或加掩蔽剂,可直接测定.线性范围0~1.2μg/25 mL,线性回归方程式为ΔA=0.35C+0.005.人工合成样品回收率为99.5%,样品测定结果的相对标准偏差小于4.1%,加标回收率为96.8%~102.8%.摩尔吸收系数ε525 nm=4.9×105L.mol-1.cm-1.
Abstract:
The m ethod is based the pr inciple that Fe3+ cata lyzes the deco lor izing reaction resulting from the ox idation of neu tral red by hydrogen perox ide in d iluteH 2SO4 m ed ium. On the basis of th is pr inciple, a cata lytic spectrophotom etry fo r dederm ination of trace iron in gelatin, epoxy resin and to luene d iam ine has been deve loped. The determ in ing conditions o f th is m ethod were std ied. The selectiv ity o f th ism e thod is h igh and iron in sam ples is direc tly de term ined to have no t need ex traction and sepera teion from inte rference ions or add ingm asking agent. The linear range is 0~ 1. 2 μg /25mL. The regress ion equation is A = 0. 35C + 0. 005. The recovery of synthe tic sam ple is 99.5%. RSD’ s o f de-term ination results fo r sam ples are less than 4. 1%. The recoveries of samp les w ith standard addition are 96.8% ~ 102. 8%. The mo lar abso rbtiv ity is 4.9× 105 L· m o l- 1·cm- 1.

参考文献/References:

[ 1] 陈树榆, 张敏, 林淑钦, 等. 流动注射在线萃取- 火焰原子吸收光谱法测定明胶中微量Fe和Cu[ J]. 光谱学与光谱分析, 1995, 15( 4) : 85- 90.
[ 2] 叶美君. 环氧树脂中微量铁的测定[ J] . 化学世界, 1992, 33( 9): 412- 414.
[ 3] 王三友. 原子吸收法测定甲苯二胺中铜、铁、镍含量 [ J]. 黎明化工, 1997( 2): 38- 39.
[ 4] 曹永林, 陈恕华. 催化褪色光度法测定痕量铁-- Fe ( Ⅲ ) -中性红-H 2O2 体系[ J]. 理化检验化学分册, 1989, 25( 1): 45 -46.

相似文献/References:

[1]刘立行,刘旭昆.单缝石英管火焰原子吸收法测定聚丙烯及明胶中微量铜[J].南京师范大学学报(工程技术版),2006,06(02):061.
　LIU Lixing,LIU Xukun.Determination of Copper in Polypropylene and Gelatin by FAAS with Single Slot Quartz Tube[J].Journal of Nanjing Normal University(Engineering and Technology),2006,06(04):061.

备注/Memo

备注/Memo:
作者简介: 刘立行( 1938-) , 教授, 主要从事仪器分析教学及分析方法研究. E-m a il:  iu lih angfs@ tom. com
更新日期/Last Update: 2013-04-29