| 印迹壳聚糖/凹土分离富集-火焰原子吸收光谱法测定中药中的痕量铅 |
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| 引用本文： | 熊清平,石莹莹,张强华,蒋项云,曹林. 印迹壳聚糖/凹土分离富集-火焰原子吸收光谱法测定中药中的痕量铅[J]. 光谱实验室, 2011, 28(5): 2708-2712 |
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| 作者姓名： | 熊清平 石莹莹 张强华 蒋项云 曹林 |
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| 作者单位： | 淮阴工学院生化学院 江苏省淮安市枚乘路1号223003 |
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| 基金项目： | 江苏省自然科学基金项目(BK2008196); 淮安市工业支撑项目(HAG2010011) |
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| 摘 要： | 建立了用离子印迹壳聚糖/凹凸棒石(MICA)分离富集-火焰原子吸收光谱法(FAAS)测定中药中痕量铅的新方法.在动态吸附条件下,系统地研究了溶液pH值、流速、洗脱条件和干扰离子对痕量铅分离富集的影响；在pH 4.5,上样流速为0.60mL/min的条件下,铅能被MICA定量富集;吸附的铅可用1.0mol/L HCl-0...
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| 关 键 词： | 印迹技术 凹凸棒石黏土 壳聚糖 分离富集 火焰原子吸收光谱法 铅 |
Determination of Trace Lead in Traditional Chinese Medicine by FAAS-Separation and Concentration with Imprinting of Chitosan/Attapulgite |
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| XIONG Qing-Ping,SHI Ying-Ying,ZHANG Qiang-Hua,JIANG Xiang-Yun,CAO Lin. Determination of Trace Lead in Traditional Chinese Medicine by FAAS-Separation and Concentration with Imprinting of Chitosan/Attapulgite[J]. Chinese Journal of Spectroscopy Laboratory, 2011, 28(5): 2708-2712 |
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| Authors: | XIONG Qing-Ping SHI Ying-Ying ZHANG Qiang-Hua JIANG Xiang-Yun CAO Lin |
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| Affiliation: | XIONG Qing-Ping SHI Ying-Ying ZHANG Qiang-Hua JIANG Xiang-Yun CAO Lin(Faculty of Life Sciences and Chemical Engineering,Huaiyin Institute of Technology,Huaian,Jiangsu 223003 P.R.China) |
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| Abstract: | A new method for the determination of trace lead（Ⅱ） in traditional Chinese medicine by FAAS-separation and concentration with MICA was established.Under dynamic adsorbtion conditions,the effects of optimal pH of the solution,flow rate,elution conditions and interfering ion on separation and concentration of trace lead（Ⅱ） were investigated by the numbers.Lead can quantificationally gathered at pH value of 4.5 with injection velocity of 0.60 mL/min,and adsorbed lead can get entire elution by 1.0mol/L HCl-0.1mol/L methyl isobutyl ketone alcohol with flow rate of 0.96mL/min,while the dynamic adsorption capacity of MICA on lead was 36.78 mg/g under the optimal conditions.The linear range was from 0 to 1.28mg/L with correlation coefficient of 0.9997,and the detection limit was 0.73μg/L（3σ,n=11）,and recovery was between 97.5% and 101.4% with RSD of 1.69%（n=6,ρ=0.08mg/L）.The method has simple operation,good linear relationship with high sensitivity and precision,and that can be applied to the determination of trace lead（Ⅱ） in traditional Chinese medicine with satisfactory results. |
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| Keywords: | Imprinting Rechnique Attapulgite Clay Chitosan Separation and Concentration FAAS Lead（Ⅱ） |
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