[1]肖建芳,王 燕,周 垒,等.锆、钼、钨改性石墨管-石墨炉原子吸收法测定电子级二乙二醇甲醚中铅含量[J].常州大学学报(自然科学版),2020,32(04):32-36.[doi:10.3969/j.issn.2095-0411.2020.04.005]
　XIAO Jianfang,WANG Yan,ZHOU Lei,et al.Zirconium, Molybdenum and Tungsten Modified Graphite Tube- Determination of Lead in Electronic Grade Diethylene Glycol Methyl Ether by Graphite Furnace Atomic Absorption Spectrometry[J].Journal of Changzhou University(Natural Science Edition),2020,32(04):32-36.[doi:10.3969/j.issn.2095-0411.2020.04.005]
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锆、钼、钨改性石墨管-石墨炉原子吸收法测定电子级二乙二醇甲醚中铅含量()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第32卷
期数:
2020年04期
页码:
32-36
栏目:
化学化工
出版日期:
2020-07-28

文章信息/Info

Title:
Zirconium, Molybdenum and Tungsten Modified Graphite Tube- Determination of Lead in Electronic Grade Diethylene Glycol Methyl Ether by Graphite Furnace Atomic Absorption Spectrometry
文章编号:
2095-0411(2020)04-0032-05
作者:
肖建芳1; 王 燕2; 周 垒2; 郭登峰2
(1.安徽金禾实业股份有限公司,安徽 滁州 239000; 2.常州大学 石油化工学院,江苏 常州 213164)
Author(s):
XIAO Jianfang1;  WANG Yan2;  ZHOU Lei2;  GUO Dengfeng2
(1. Anhui Jinhe Industrial Co., Ltd., Chuzhou 239000, China; 2. School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China)
关键词:
石墨炉原子吸收光谱;  二乙二醇甲醚;  铅;  检测
Keywords:
GFAAS;  diethylene glycol methyl ether;  lead;  determination
分类号:
TQO 41.7
DOI:
10.3969/j.issn.2095-0411.2020.04.005
文献标志码:
A
摘要:
分别使用氧氯化锆、钼酸铵、钨酸钠对石墨管进行改性,采用X射线衍射(XRD)、扫描电镜(SEM)对改性前后石墨管进行了表征,通过测定电子级二乙二醇甲醚中铅含量对改性后石墨管的分析性能进行考察。研究结果表明改性后石墨管表面形成了高强度、高熔点的碳化钼、碳化钨和氧化锆,提高了测定的灵敏度与精度。采用氧氯化锆改性石墨管测定电子级二乙二醇甲醚中铅含量,相对标准偏差≤3.21%,线性相关系数为0.981 4,加标回收率为98.7%～110.6%; 采用钼酸铵改性石墨管测定的相对标准偏差≤2.20%,线性相关系数为0.999 4,加标回收率为99.3%～106.4%; 采用钨酸钠改性石墨管测定的相对标准偏差≤3.38%; 线性相关系数为0.994 7,加标回收率为98.5%～106.8%。以钼酸铵改性石墨管的分析性能最好。
Abstract:
In this paper, the graphite tube was modified by zirconium oxychloride, ammonium molybdate and sodium tungstate respectively, and then the graphite tubes before and after modification were characterized by X-ray diffraction(XRD)and scanning electron microscope(SEM). The analytical performance of modified graphite tube was studied through the determination of lead in electronic grade diethylene glycol ether. The research results showed that: The formation of molybdenum carbide, tungsten carbide and zirconium oxide of high strength and high melting point on the surface of graphite tube after modified by ammonium molybdate, zirconyl chloride sodium tungstate could improve the sensitivity and accuracy of determination. The relative standard deviation of the graphite tube modified by zirconium oxychloride was ≤3.21%. The linear correlation coefficient was 0.981 4, and the recovery rate was 98.7%—110.6%; the relative standard deviation of the graphite tube modified by ammonium molybdate was ≤2.20%. The linear correlation coefficient was 0.999 4, and the recovery rate was 99.3%—106.4%; the relative standard deviation of the graphite tube modified by sodium tungstate was ≤3.38%. The linear correlation coefficient was 0.994 7, and the recovery rate was 98.5%—106.8%. The analytical performance of the graphite tube modified by ammonium molybdate was the best.

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备注/Memo

备注/Memo:
收稿日期:2020-01-03。
基金项目:国家自然科学基金资助项目(20671045); 江苏省绿色催化材料与技术重点实验室资助项目(BM2012110)。
作者简介:肖建芳(1976—),女,安徽滁州人,工程师。通信联系人:郭登峰(1964—),gdf166@163.com
引用本文:肖建芳,王燕,周垒,等.锆、钼、钨改性石墨管-石墨炉原子吸收法测定电子级二乙二醇甲醚中铅含量[J]. 常州大学学报(自然科学版),2020,32(4):32-36.
更新日期/Last Update: 2020-07-30