引用本文:
徐思远, 雷平, 晋冠平. 三聚氰胺基螯合树脂/碳纳米管修饰充蜡石墨电极阳极溶出伏安法测定铅和镉[J]. 应用化学,
2014, 31(2): 206-211.
doi:
10.3724/SP.J.1095.2014.30106
Citation: XU Siyuan, LEI Ping, JIN Guanping. Determination of Pb(Ⅱ),Cd(Ⅱ) with Melamine Chelating Resin/Multi-walled Carbon Nanotubes Composites Modified Waxed Graphite Electrode[J]. Chinese Journal of Applied Chemistry, 2014, 31(2): 206-211. doi: 10.3724/SP.J.1095.2014.30106
Citation: XU Siyuan, LEI Ping, JIN Guanping. Determination of Pb(Ⅱ),Cd(Ⅱ) with Melamine Chelating Resin/Multi-walled Carbon Nanotubes Composites Modified Waxed Graphite Electrode[J]. Chinese Journal of Applied Chemistry, 2014, 31(2): 206-211. doi: 10.3724/SP.J.1095.2014.30106
三聚氰胺基螯合树脂/碳纳米管修饰充蜡石墨电极阳极溶出伏安法测定铅和镉
摘要:
采用超声法合成了三聚氰胺-甲醛-硫脲螯合树脂(MFT),基于碳纳米管优良的光电性能,制备了MFT/纳米碳管复合物修饰充蜡石墨电极(MFT/MWCNTs/WGE)。采用场发射扫描电子显微镜及电化学技术表征了该修饰电极的特性。该电极被成功地用于水溶液中重金属离子Pb(Ⅱ)和Cd(Ⅱ)的同时测定,Pb(Ⅱ)和Cd(Ⅱ)的溶出峰电流与浓度分别在3×10-8~9×10-7 mol/L和5×10-8~7×10-7 mol/L的浓度范围内,呈良好的线性增长关系,Pd(Ⅱ)和Cd(Ⅱ)的检测限分别为2×10-9和3×10-9 mol/L(3σ)。
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关键词:
- 超声合成
- / 三聚氰胺-甲醛-硫脲螯合树脂
- / 多壁碳纳米管
- / 充蜡石墨
- / 重金属离子
English
Determination of Pb(Ⅱ),Cd(Ⅱ) with Melamine Chelating Resin/Multi-walled Carbon Nanotubes Composites Modified Waxed Graphite Electrode
Abstract:
Melamine-formaldehyde-thiourea chelating resin coated multi-walled carbon nanotube(MFT/MWCNTs) composite was prepared by ultrasonic method,and characterized by field emission scanning electron microscope and electrochemical techniques.The composite modified waxed graphite electrode(MFT/MWCNTs/WGE) was successfully applied to Pb(Ⅱ),Cd(Ⅱ) simultaneously screening.The striping peak current shows a good linear relationship in the concentration range of 3×10-8~9×10-7 mol/L for Pb(Ⅱ) and 5×10-8~7×10-7 mol/L for Cd(Ⅱ),with a detection limit of 2×10-9 and 3×10-9 mol/L(3σ) for Pb(Ⅱ) and Cd(Ⅱ),respectively.
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