MAO Airong YAO Yao CHEN Liang CAI Zhaosheng*.Determination of Trace Copper by Flame Atomic Absorption Spectrometry with Surfactant Sensitization[J].Plating & Finishing,2022,(1):6-10.[doi:10.3969/j.issn.1001-3849.2022.01.002]
表面活性剂增感-火焰原子吸收光谱法测定痕量铜
- Title:
- Determination of Trace Copper by Flame Atomic Absorption Spectrometry with Surfactant Sensitization
- 分类号:
- O657.3
- 文献标志码:
- A
- 摘要:
- 制备了一种新型表面活性剂3-氯-2-羟丙基二甲基脱氢枞基氯化铵（DHAHPTMA），建立了一种以该表面活性剂为增感剂，火焰原子吸收光谱法测定水中痕量铜的新方法。考察了仪器工作条件、表面活性剂种类及用量、介质种类及用量、共存离子等对铜含量测定的影响，并对其增感机理进行了初探。实验结果表明，方法的检出限为0.002 mg·L -1，线性范围为0.01~1.40 mg·L-1，相对标准偏差不超过2.6%（n=6），加标回收率在98.7%~101.6%之间。
- Abstract:
- A new type of cationic surfactant， 3-dehydroabietylamino-2-hydroxypropyl trimethylammonium chloride （DHAHPTMA）， was prepared， and used as a sensitizer to establish a new method for determination of trace copper in water. The effects of the working conditions of instrument， the type and dosage of surfactant， the type and dosage of medium， and the co-existing ions on the determination of copper content were investigated. Moreover， the mechanism of sensitization of DHAHPTMA was preliminary discussed. The experimental results indicated that the detection limit was 0.002 mg·L-1， the linear range was 0.01~1.40 mg·L-1， the relative standard deviation （RSD） was less than 2.6%， and the recoveries were 98.7%~101.4%
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备注/Memo
收稿日期： 2021-06-12 修回日期： 2021-07-02 作者简介： 冒爱荣（1979－），男，博士，高级实验师，email：maoairong@163.com