引用本文:
Xiao Ming Guo, Xiang Dong Xu, Hui Jing Zhang, Yong Gang Hu, Jie Zhang. A novel method for Co (Ⅱ) and Cu (Ⅱ) analysis by capillary electrophoresis with chemiluminescence detection[J]. Chinese Chemical Letters,
2007, 18(9): 1095-1098.
doi:
10.1016/j.cclet.2007.06.015
Citation: Xiao Ming Guo, Xiang Dong Xu, Hui Jing Zhang, Yong Gang Hu, Jie Zhang. A novel method for Co (Ⅱ) and Cu (Ⅱ) analysis by capillary electrophoresis with chemiluminescence detection[J]. Chinese Chemical Letters, 2007, 18(9): 1095-1098. doi: 10.1016/j.cclet.2007.06.015
Citation: Xiao Ming Guo, Xiang Dong Xu, Hui Jing Zhang, Yong Gang Hu, Jie Zhang. A novel method for Co (Ⅱ) and Cu (Ⅱ) analysis by capillary electrophoresis with chemiluminescence detection[J]. Chinese Chemical Letters, 2007, 18(9): 1095-1098. doi: 10.1016/j.cclet.2007.06.015
A novel method for Co (Ⅱ) and Cu (Ⅱ) analysis by capillary electrophoresis with chemiluminescence detection
摘要:
Based on the fact that some metal ions can catalyze the chemiluminescence (CL) reaction of luminol with K3Fe (CN) 6, a novel capillary electrophoresis CL method was developed for the determination of Co (Ⅱ) and Cu (Ⅱ). The separation was carried out with a 10 mmol/L sodium acetate solution containing 0.8 mmol/L luminol and 2.0 mmol/L α-HIBA (adjusted to pH 4.8 by Hac solution). The post-capillary reagent was 2.0 mmol/L K3Fe (CN) 6which was adjusted to pH 13.0 by NaOH solution. Under the optimum conditions, the detection limits (S/N=3) for Co (Ⅱ) and Cu (Ⅱ) were 7.5×10-11 mol/L and 7.5×10-9 mol/L, with the linear range of 7.5×10-9 mol/L to 1.0×10-6 mol/L and 7.5×10-8 mol/L to 5.0×10-5 mol/L, respectively.
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关键词:
- Capillary electrophoresis
- / Chemiluminescence
- / Co (Ⅱ)
- / Cu (Ⅱ)
English
A novel method for Co (Ⅱ) and Cu (Ⅱ) analysis by capillary electrophoresis with chemiluminescence detection
Abstract:
Based on the fact that some metal ions can catalyze the chemiluminescence (CL) reaction of luminol with K3Fe (CN) 6, a novel capillary electrophoresis CL method was developed for the determination of Co (Ⅱ) and Cu (Ⅱ). The separation was carried out with a 10 mmol/L sodium acetate solution containing 0.8 mmol/L luminol and 2.0 mmol/L α-HIBA (adjusted to pH 4.8 by Hac solution). The post-capillary reagent was 2.0 mmol/L K3Fe (CN) 6which was adjusted to pH 13.0 by NaOH solution. Under the optimum conditions, the detection limits (S/N=3) for Co (Ⅱ) and Cu (Ⅱ) were 7.5×10-11 mol/L and 7.5×10-9 mol/L, with the linear range of 7.5×10-9 mol/L to 1.0×10-6 mol/L and 7.5×10-8 mol/L to 5.0×10-5 mol/L, respectively.
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Key words:
- Capillary electrophoresis
- / Chemiluminescence
- / Co (Ⅱ)
- / Cu (Ⅱ)
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