CAJ | 학술논문

采用柠檬酸钠-鞣酸还原法制备出胶体金,并用紫外可见分光光谱对胶体金粒径及形态进行了评价,结合Zeta电位分析了胶体金的稳定性,利用多重金属沉积法对玻璃表面新鲜的汗潜、油潜手印进行了显现.结果表明,合成的胶体金粒径为10～35m,且胶体金颗粒形态均一,稳定性强.多重金属沉积法具有选择性吸附强、背景污染小等特点,其显现效果与粉末法相当,甚至优于粉末法.
채용저몽산납-유산환원법제비출효체금,병용자외가견분광광보대효체금립경급형태진행료평개,결합Zeta전위분석료효체금적은정성,이용다중금속침적법대파리표면신선적한잠、유잠수인진행료현현.결과표명,합성적효체금립경위10～35m,차효체금과립형태균일,은정성강.다중금속침적법구유선택성흡부강、배경오염소등특점,기현현효과여분말법상당,심지우우분말법.
Colloidal gold is reductively prepared by sodium citrate-tannin,the size and morphology of gold is charaeterized by UV-visible spectrum,the stability of colloidal gold is evaluated by the zeta potentials.MMD is used for the development of fresh sweat and oil fingerprint on glass.The results show that the colloidal gold particles possess a diameter range of 10～35nm,and demonstrate uniform morphology,good time-dependent stability.MMD has advantages on selectively deposition and less contaminated on background.MMD is equal or better than powder.