河南科学
河南科學
하남과학
HENAN SCIENCE
2013年
6期
757-761
,共5页
银纳米粒子%酪氨酸%比色法%Mn2+
銀納米粒子%酪氨痠%比色法%Mn2+
은납미입자%락안산%비색법%Mn2+
silver nanoparticles%tyrosine%colorimetry%Mn2+
以酪氨酸为模板，成功合成了具有强消光系数和表面等离子共振效应的银纳米粒子（Tyr-Ag），并测试了其与一些金属离子的相互作用.实验表明，在碱性条件下，Mn2＋的存在能够导致 Tyr-Ag 迅速聚集，使其颜色由橙黄色变成棕褐色，而其他的离子则几乎没有这种反应.据此，建立了一种高效检测 Mn2＋的方法.最佳条件下，检测限可达到5．91×10-10 mol/L.将该法用于实际样品中 Mn2＋的测定，结果令人满意.
以酪氨痠為模闆，成功閤成瞭具有彊消光繫數和錶麵等離子共振效應的銀納米粒子（Tyr-Ag），併測試瞭其與一些金屬離子的相互作用.實驗錶明，在堿性條件下，Mn2＋的存在能夠導緻 Tyr-Ag 迅速聚集，使其顏色由橙黃色變成棕褐色，而其他的離子則幾乎沒有這種反應.據此，建立瞭一種高效檢測 Mn2＋的方法.最佳條件下，檢測限可達到5．91×10-10 mol/L.將該法用于實際樣品中 Mn2＋的測定，結果令人滿意.
이락안산위모판，성공합성료구유강소광계수화표면등리자공진효응적은납미입자（Tyr-Ag），병측시료기여일사금속리자적상호작용.실험표명，재감성조건하，Mn2＋적존재능구도치 Tyr-Ag 신속취집，사기안색유등황색변성종갈색，이기타적리자칙궤호몰유저충반응.거차，건립료일충고효검측 Mn2＋적방법.최가조건하，검측한가체도5．91×10-10 mol/L.장해법용우실제양품중 Mn2＋적측정，결과령인만의.
Directed by tyrosine,silver nanoparticles with high extinction coefficient and surface plasmon resonance properties were successfully synthesized(Tyr-Ag). And their interactions with some metal cations were investigated. It was indicated that Tyr-Ag aggregated in the presence of Mn2+ under the alkaline conditions,followed by the colour changing from orange yellow to chocolate brown,while other cations had little effect on Tyr-Ag. Thus,a highly efficient method for the determination of Mn2+ has been developed. Under the optimum conditions,the detection limit was 5.91×10-10 mol/L. The method was applied to the determination of Mn2+ in real samples,and satisfied results were obtained.
