一氧化氮在水杨醛谷氨酸合镍修饰碳黑微电极上的电催化氧化
Electrocatalytic Oxidation of Nitric Oxide at Carbon Black Microelectrode Modified with Nickel Complex of N-Salicylidene Glutamic Acid
摘 要
制备了水杨醛谷氨酸合镍修饰碳黑微电极,试验了修饰电极对一氧化氮的电催化氧化性能.试验结果表明,在pH 6.8的磷酸盐中,一氧化氮在该电极上的线性范围为4.0×10-8~1.0×10-5mol·L-1;检出限(3σ)为1.0×10-8mol·L-1.将此电极用于3种模拟样品的分析,并在此基础作回收率试验,测得RSD(n=8)值在1.9%~2.8%之间,回收率在97%~105%之间.在一氧化氮浓度1.0×10-6mol·L-1的水平上进行精密度试验,测得RSD(n=10)为2.2%.
水杨醛谷氨酸合镍
微电极
电催化
Nitric oxide
Nickel complex of N-salicylidene glutamic acid
Microelectrode
Electrocatalysis
Abstract
Preparation of carbon black microelectrode modified with nickel complex of N-salicylidene glutamic acid was described and electrocatalytic oxidation behavior of nitric oxide (NO) at the electrode was studied.As shown by the experimental results,in a phoshpate buffer medium of pH 6.8,linear relationship was found between the catalytic peak current and concentration of nitric oxide in the range of 4.0×10-8-1.0×10-5mol·L-1 with a detection limit (3σ) of 1.0×10-8mol·L-1.Precision was tested at the concentration level of 1.0×10-6mol·L-1 of NO,the value of RSD′s (n=10) obtained was 2.2%.In its application to the analysis of 3 simulated samples,the values of RSD′s (n=8) and recovery found were in the ranges of 1.9%-2.8% and 97%-105% respectively.
中图分类号 O657.1
所属栏目 工作简报
基金项目 湖南省教育厅资助项目(02B027)
收稿日期 2006/3/2
修改稿日期
网络出版日期
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备注邓培红(1975-),女,广西南宁人,讲师,硕士,从事生物电化学方面的研究.
引用该论文: DENG Pei-hong,ZHANG Jun,KUANG Yun-fei. Electrocatalytic Oxidation of Nitric Oxide at Carbon Black Microelectrode Modified with Nickel Complex of N-Salicylidene Glutamic Acid[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2007, 43(5): 377～379
邓培红,张军,匡云飞. 一氧化氮在水杨醛谷氨酸合镍修饰碳黑微电极上的电催化氧化[J]. 理化检验－化学分册, 2007, 43(5): 377～379
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参考文献
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【3】Stephane Trevin,Fethi Bedioui,Jacques Devynck.Electrochemical and spectrophotometric study of the behavior of electropolymerized nickel porphyrin films in the determination of nitric oxide in solution[J].Talanta,1996,43(3):303-311．
【4】Fethi Bedioui,Stephane Trevin,Jacques Devynck,et al.Elaboration and use of nickel planar macrocyclic complex-based sensors for the direct electrochemical measurement of nitric oxide in biological media[J].Biosensors &Bioelectronics,1997,12(3):205-212．
【5】Wu W C,Wang W,Kao L S,et al.Nitric oxide reduces blood pressure in the nucleus tractus solitarius:A real time electrochemical study[J].Brain Research Bulletin,2002,57(2):171-177．
【6】屠惠萍,曹旭妮,鲜跃仲,等.聚四氨基酞箐铜型传感器及其在NO测定中的应用[J].分析化学,1999,27(6):631-635．
【7】Hoshion M,Konishi R,Tezuka N,et al.Photochem-istry of nitrosyl metal complexes.Laser photolysis studies of nitrosylcobalt schiff bases in ethanol and toluene in the temperature range 160~300K[J].J Phys Chem,1996,100(32):13569．
【8】郑东红,郑伟军,陆天虹.N,N′-双水杨醛乙二胺合钴-全氟磺酸膜修饰电极的电化学研究[J].高等学校化学学报,1997,18(3):360．
【9】毛兰群,连惠婷,田玉,等.聚N,N′-双水杨醛乙二胺合钴修饰超微电极的制备及其在一氧化氮测定中应用的研究[J].分析科学学报,1998,14(4):273-277．
【10】何星存,邓锐,李平,等.一氧化氮在Nafion-钴席夫碱膜修饰电极上的电催化氧化及其测定[J].分析测试学报,2000,19(2):35-38．
【11】谢祖芳,何星存,陈孟林.NO在自组装Nafion/Co(salen)膜修饰电极上的电催化氧化[J].广西师范大学学报,2001,19(1):67-71．
【12】何星存,蔡沛祥,莫金垣,等.一氧化氮在聚钴-席夫碱修饰电极上的电催化氧化[J].分析试验室,2000,19(1):9．
【13】田大民,刘向云.过渡金属谷氨酸希夫碱配合物的合成及表征[J].河南城建高等专科学校学报,2002,11(2):42-44．
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