CAJ | 학술논문

利用荷叶萃取液生物合成纳米金，并与多壁碳纳米管/L-半胱氨酸复合成修饰电极材料，研究了左旋多巴在该修饰电极上的电化学行为.在0.2 mol/L乙酸-乙酸钠体系(pH=2.6)中，氧化峰电流与左旋多巴浓度在0.6~40μmol/L及60~120μmol/L范围内呈良好的线性关系，检出限达5.2×10-8 mol/L.实验结果表明，生物合成纳米金复合多壁碳纳米管/L-半胱氨酸修饰电极具有良好的稳定性和高灵敏度，对实际样品测定的回收率在91.2%~102.5%之间.
이용하협췌취액생물합성납미금，병여다벽탄납미관/L-반광안산복합성수식전겁재료，연구료좌선다파재해수식전겁상적전화학행위.재0.2 mol/L을산-을산납체계(pH=2.6)중，양화봉전류여좌선다파농도재0.6~40μmol/L급60~120μmol/L범위내정량호적선성관계，검출한체5.2×10-8 mol/L.실험결과표명，생물합성납미금복합다벽탄납미관/L-반광안산수식전겁구유량호적은정성화고령민도，대실제양품측정적회수솔재91.2%~102.5%지간.
Gold nanoparticles were bio-synthesized by the lotus leaf extract. The Au multiwalled carbon nano-tubes( MWCNTs)/L-cysteine( L-Cys) composite material was prepared. The electrochemical behavior of levo-dopa at the modified electrode was studied. In 0.2 mol/L HAc-NaAc(pH=2.6) buffer, levodopa concentra-tion was linear with oxidation peak current in the range of 0.6-40 and 60-120 μmol/L, and the detection limit was 5.2í10-8 mol/L ( S/N=3 ) . The results show that the Au/MWCNTs/L-Cys modified electrode has good stability and high sensitivity. It has a satisfactory result to determine the effective component of real sam-ple with the recovery of standard addition was between 91.2%-102.5%.