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制备了La,Ce,Nd,Sm,Eu,Gd,Dy微粒和纳米金,分别用La,Ce,Nd,Sm,Eu,Gd,Dy微粒替代部分的纳米金,研究了La-Au,Ce-Au,Nd-Au,Sm-Au,Eu-Au,Gd-Au,Dy-Au微粒分别对银染效果的影响及其紫外可见(UV-Vis)吸收光谱。与纳米金相比,La-Au,Ce-Au,Nd-Au,Sm-Au,Eu-Au,Gd-Au,Dy-Au微粒可延长银染后的斑点持续的时间,其中Nd-Au微粒的效果最好,斑点持续的时间为30min,是纳米金的2.7倍;可大幅度加深斑点的颜色,其中Nd-Au,Sm-Au微粒的效果最好,用Nd微粒替代部分的纳米金,纳米金用量降低了80%,但还能提高银染法的灵敏度。在200~800nm范围,La,Ce,Nd,Sm,Eu,Gd,Dy微粒和纳米金溶液的UV-Vis吸收光谱只有一个吸收峰,λmax分别为275,277,276,276,278,277,278和521nm;La-Au,Ce-Au,Nd-Au,Sm-Au,Eu-Au,Gd-Au,Dy-Au微粒混合液的UV-Vis吸收光谱有两个吸收峰,λmax(RE)和λmax(Au)分别为276和522nm,276和522nm,276和523nm,276和523nm,276和522nm,276和522nm,276和523nm,纳米金和La微粒的吸收峰的波长发生了红移,Ce,Eu,Gd,Dy微粒的吸收峰的波长发生了蓝移,Nd,Sm微粒的吸收峰的波长不变,纳米金与稀土微粒可能有相互作用。
La, Ce, Nd, Sm, Eu, Gd, Dy particles and nano-gold were prepared and La, Ce, Nd, Sm, Eu, Effect of Au, Nd-Au, Sm-Au, Eu-Au, Gd-Au and Dy-Au Particles on Silver Staining and UV-Vis Absorption Spectrum. Compared with nano gold, La-Au, Ce-Au, Nd-Au, Sm-Au, Eu-Au, Gd-Au and Dy-Au particles can extend the duration of silver- The best effect is that the spot lasts for 30min and is 2.7 times that of nano gold. The color of the spots can be greatly enhanced. The Nd-Au and Sm-Au particles have the best effect, Nd particles replace part of the gold nanoparticles, Nano-gold dosage reduced by 80%, but also can improve the sensitivity of silver staining. The UV-Vis absorption spectra of La, Ce, Nd, Sm, Eu, Gd, Dy and nanogold solutions in the range of 200-800 nm have only one absorption peak with λmax of 275,277,276,276,278,277,278 and 521 nm, respectively. The UV-Vis absorption spectra of Nd-Au, Sm-Au, Eu-Au, Gd-Au and Dy-Au microparticles have two absorption peaks with λmax (RE) and λmax (Au) of 276 and 522 nm, respectively And 522nm, 276 and 523nm, 276 and 523nm, 276 and 522nm, 276 and 522nm, 276 and 523nm, the absorption peak of gold nanoparticles and La particles red shift, the absorption peak of Ce, Eu, Gd, Dy particles Wavelength blue shift, Nd, Sm absorption peak wavelength unchanged, nano gold and rare earth particles may have interaction.