造纸工业用高岭土中Fe_2O_3含量测试的改进  

Improvement in Determination of Fe_2O_3 in Kaolin for Paper Industry

作　　者：林新花[1] 陈红杰[1] 林艳[1] 

机构地区：[1]广东轻工职业技术学院轻化工程系,广东广州510300

出　　处：《造纸科学与技术》2011年第3期80-82,85,共4页Paper Science & Technology

摘　　要：用分光光度法(比色法)和原子吸收光谱法分别测定高岭土中三氧化二铁(Fe2O3)含量。并对两种仪器分析方法所得结果作比较。结果表明,随Fe2O3变量,分光光度法和原子吸收光谱法均有较好的线性关系,但测定的结果有差异。分光光度法的操作简便,适用于大批量的简单样品的控制分析。原子吸收光谱法的标准加入法因可消除基体干扰,测得Fe2O3结果准确度更高,适合基体复杂的试样的分析,且仪器测定迅速。Iron oxide（Fe2O3） content in Kaolin for paper industry was determined by spectrophotometry（colorimetry） and atomic absorption spectrometry.The results obtained from two instrumental analysis methods were compared.The results show that though the linear calibration curves for spectrophotometry and atomic absorption spectrometry were good,the measurement results by both methods were different.Spectrophotometry is easy to operate,it is suited for control analysis of large volumes and simple samples.Due to eliminating matrix interference,the measurement result veracity of Fe2O3 by atomic absorption spectrometry was better than that by spectrophotometry.It is suited for determining complicated samples.Atomic absorption spectrometry has advantages of quick and easy.

关 键 词：分光光度法 原子吸收光谱法 高岭土 Fe2O3测定 

分 类 号：TQ174.1[化学工程—陶瓷工业]