江汉大学学报(自然科学版) ›› 2013, Vol. 41 ›› Issue (2): 36-39.

• 化学与环境科学 • 上一篇    下一篇

β-环糊精交联树脂富集氢化物发生-原子荧光光谱法测定水样中的苯基汞

杨小秋1,邱海鸥2   

  1. 1.江汉大学 化学与环境工程学院,湖北 武汉 430056;2.中国地质大学 材料与化学学院,湖北 武汉 430074
  • 出版日期:2013-04-12 发布日期:2014-01-07
  • 作者简介:杨小秋(1978 —),女,实验师,硕士,研究方向:食品安全分析。
  • 基金资助:
    武汉市科技局计划项目(201220837304)

Determination of Phenyl-mercury in Water Samples with Hydride -generation Atomic Fluorescence Spectrometry After Enrichment with β-cyclodextrin Cross-linking Polymer

YANG Xiao-qiu1,QIU Hai-ou2   

  1. 1.School of Chemistry and Environmental Engineering,Jianghan University,Wuhan 430056,Hubei,China;2.Faculty of Material Science and Chemistry,China University of Geosciences,Wuhan 430074,Hubei,China
  • Online:2013-04-12 Published:2014-01-07

摘要: 提出利用β-环糊精交联聚合树脂富集环境水样中的苯基汞,选用乙醇洗脱富集的苯基汞,并使用氢化物发生-原子荧光光谱法对其消解物进行定量分析的方法,通过实验优化其化学和仪器条件。讨论了溴化剂用量、溴化时间对消解率的影响,振荡时间对吸附率的影响,洗脱时间对洗脱率的影响,以及共存离子干扰、精密度与检出限等因素,对样品进行了分析并绘制了标准曲线。该方法灵敏度高、选择性好、精密度高,检出限为0.36 ng/mL,相对标准偏差RSD为2.29%(n = 10,c = 4 ng/mL)。

关键词: β-CD交联聚合树脂, 苯基汞, 氢化物发生-原子荧光光谱法

Abstract: Proposes the method utilizing β-cyclodextrin cross-linking polymer enrich phenyl-mercury in sample water,chooses ethanol to elutriate off the enriched phenyl-mercury,and uses hydride-generation atomic fluorescence spectrometry method to quantitatively analyse digestive product,through experiment to optimize the chemical and instrument conditions. Discusses the influence of brominating agent dosage and brominating time to digestive rate,the influence of oscillating time to adsorption rate,the inflence of eluting time to eluting rate,discusses the factors such as the interference of concomitant ions,the precision and the detection limit,analyses the sample and draws the standard curve. The method is sensitive,selective and precise,the detection limit is 0. 36 ng/mL and RSD is 2. 29%(n = 10,c = 4 ng/mL).

Key words: β-cyclodextrin cross-linking polymer, phenyl-mercury, hydride-generation, atomic fluorescence spectrometry

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