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纳米金应用于毛细管电泳检测尿液中8-OHdG

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摘要 建立了8-羟基-2’脱氧鸟嘌呤核苷(8-OHdG)的毛细管电泳线扫集技术。以20mmol/L硼砂(含600μL,i.d.20nm纳米金溶液和0.3mmol/LCTAB,pH9.18)为背景电解质,进样前注入一段50mmol/LNaCl溶液。运行电压-20KV,紫外检测波长254nm,压力进样(50mbar×100s),结果显示,体系中的8-OHdG在10min内可实现基线分离。且在0.5-50.0μmol/L浓度范围内线性关系良好(R2=0.999),加标回收率为94.6-103.2%,最低检测限(LOD)为100nmol/L。采用此方法对痕量8-OHdG进行加标回收实验,效果良好,对于临床检测患者体内8-OHdG有很大帮助。
出处 《江西化工》 2011年第1期56-60,共5页 Jiangxi Chemical Industry
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