[1]郭 伟,陈玉婷,孙贤祥,等.一种测定痕量甲醛的催化光度分析方法[J].常州大学学报(自然科学版),2011,(01):67-70.
　GUO Wei,CHEN Yu-ting,SUN Xian-xiang,et al.Catalytic Sepctrophotometric Method for Determination of Trace Formaldehyde[J].Journal of Changzhou University(Natural Science Edition),2011,(01):67-70.
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一种测定痕量甲醛的催化光度分析方法()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2011年01期
页码:
67-70
栏目:
出版日期:
2011-01-01

文章信息/Info

Title:
Catalytic Sepctrophotometric Method for Determination of Trace Formaldehyde
作者:
郭 伟; 陈玉婷; 孙贤祥; 许冬莹
常州大学 石油化工学院,江苏 常州 213164
Author(s):
GUO Wei; CHEN Yu-ting; SUN Xian-xiang; XU Dong-ying
School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China
关键词:
甲醛;  催化光度法;  盐酸氯丙嗪;  溴酸钾;  碘离子
Keywords:
formaldehyde;  kinetic spectrophotometric method;  Chlorpromazine Hydrochloride;  potassium bromate;  iodic ion
分类号:
O 657.32
文献标志码:
A
摘要:
在磷酸介质中,甲醛可以催化溴酸钾氧化盐酸氯丙嗪的反应生成一种橙红色化合物。据此建立了测定痕量甲醛的催化光度分析法。在525 nm波长处测定吸光度增加值(ΔA)与甲醛质量浓度(ρ)在12.0-132.0 mg·L-1范围内成线性关系,回归方程为:ΔA=0.026 57+0.002 25ρ(r=0.993 3),其检测下限为0.19 mg·L-1。方法的回收率为99.4%-100.5%,RSD为1.2%-1.5%。方法具有简便快速、测定甲醛含量较高和浓度范围较宽的优点,用于含碘化物-醋酸的样品溶液中少量甲醛的测定,获得了满意结果。
Abstract:
A simple, catalytic spectrophotometric method for the determination of formaldehyde was proposed, based on the catalytic effect of formaldehyde on oxidation of chlorpromazine hydrochloride-bromate in the presence ofphosphoric acid and under optimized experimental conditions. The linear concentration range of formaldehyde determined was 12.0-132.0 mg·L-1 andthe linear equation about the absorbance difference(ΔA)versus the concentration(ρ)was ΔA=0.026 57+0.002 25ρ(r=0.993 3). The limit of detection was 0.19 mg·L-1 of formaldehyde. The recoveries and the relative standard deviation(RSD)were 99.4%-100.5%,1.2%-1.5%, respectively.Thismethod has been successfully used in analysis of the sample solutions containing acetic acid and iodic ion.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:郭伟(1983-),男,山东烟台人,硕士生; 联系人:孙贤祥。
更新日期/Last Update: 2011-01-01