|Table of Contents|

Dedermination of Trace Iron in Chemical Products by Catalytic Spectrophotometry(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2005年04期
Page:
72-73
Research Field:
Publishing date:

Info

Title:
Dedermination of Trace Iron in Chemical Products by Catalytic Spectrophotometry
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
Keywords:
ca talytic spectropho tom etry;  ge latin;  epoxy resin;  toluene d iam ine;  iron
PACS:
O657.31;O614.81
DOI:
-
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.

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.

Memo

Memo:
-
Last Update: 2013-04-29