【摘 要】
：
以核酸适配体为识别元件、金纳米粒子为比色探针、氯化钠为聚集诱导剂,建立了一种快速、灵敏的盐酸克伦特罗检测方法.不存在盐酸克伦特罗时,有适配体保护的金纳米粒子在氯化钠存在时仍保持分散状态,溶液为红色.存在靶标盐酸克伦特罗时,适配体与靶标特异性结合,失去保护的金纳米粒子在一定浓度氯化钠中聚集,溶液由红色变为蓝色.该方法具有良好的选择性和较高的灵敏度,靶标浓度在50～350 nmol·L-1范围内有良好的线性响应,检出限为18.7 nmol·L-1,回收率为92.2％～109.9％.
【机 构】
：
内蒙古科技大学 材料与冶金学院,内蒙古 包头 014010;内蒙古科技大学 内蒙古自治区先进陶瓷材料与器件重点实验室,内蒙古 包头 014010
论文部分内容阅读
以核酸适配体为识别元件、金纳米粒子为比色探针、氯化钠为聚集诱导剂,建立了一种快速、灵敏的盐酸克伦特罗检测方法.不存在盐酸克伦特罗时,有适配体保护的金纳米粒子在氯化钠存在时仍保持分散状态,溶液为红色.存在靶标盐酸克伦特罗时,适配体与靶标特异性结合,失去保护的金纳米粒子在一定浓度氯化钠中聚集,溶液由红色变为蓝色.该方法具有良好的选择性和较高的灵敏度,靶标浓度在50～350 nmol·L-1范围内有良好的线性响应,检出限为18.7 nmol·L-1,回收率为92.2％～109.9％.
其他文献
Transition metal phosphides (TMPs) have exhibited decent performance in an oxygen evolution reaction (OER), which is a kinetic bottleneck in many energy storages and conversion systems. Most reported catalysts are composed of three or fewer metallic compo
ZrC and ZrB2 are both typical ultra-high temperature ceramics, which can be used in the hyperthermal environment. In this study, a method for preparing ultrafine ZrC–ZrB2 composite powder was provided, by using the raw materials of nano ZrO2, carbon black
Hexavalent chromium (Cr(VI)) compound is useful to various industries but is toxic and carcinogenic. In this research work, we fab-ricate an amperometric sensor for the determination of Cr(VI), using a titanium dioxide (TiO2)-reduced graphene oxide (rGO)
8-hydroxyquinoline (8-HQ) intercalated layered double hydroxides (LDH) film as underlayer and sol–gel layer was combined for active corrosion protection of the AM60B magnesium alloy. The LDH, LDH/sol–gel, and LDH@HQ/sol–gel coatings were analyzed using th
Copper nanowires (CuNWs) are promising electrode materials, especially for used in flexible and transparent electrodes, due to their advantages of earth-abundant, low-cost, high conductivity and flexibility. However, the poor stability of CuNWs against ox
软件定义网络是最近出现的一种新范式,它通过将所有控制和管理操作从底层设备中抽象出来,并将其设置在软件层中,从而隐藏了传统网络架构中的所有复杂性.搭建软件定义物联网(SD-IoT)仿真实验平台格外重要,现在大多采用基于开源工具搭建开发环境设计应用系统,这种方法对于新学者并不友好.文章详细地介绍了SD-IoT仿真实验平台的搭建过程,以及用实例来验证平台的可靠性.
Municipal solid waste incineration products of bottom ash (BA), fly ash (FA), and pickling sludge (PS), causing severe environ-mental pollution, were transformed into glass ceramic foams with the aid of CaCO3 as a pore-foaming agent during sintering. The
The composition and structure of substrate materials have important influences on coating performance, especially in terms of bond-ing strength and coating hardness, which determine whether the coating can be used for a given application. In this study, a
为了实现三基发射药生产工艺中的连续化压伸,同时避免模具内部螺旋状流道造成的三基发射药成型的质量和安全问题,应用ANSYS软件模拟了发射药物料在模具内的挤压过程及模针的受力情况.分析了收缩角、出料方向和模具结构对物料在模具中的温度、模具壁面压力、模针表面受力和物料出料速度分布的影响规律,并通过实验进行了验证.结果表明:模具收缩角越大,模具内压力越大,物料温度也越高,且越容易形成热点,同时模针外表面受到的挤压力和摩擦力也越大,模针越容易出现变形和断裂;竖直挤出过程中,模具壁面压力及模针受力均远大于水平挤出中的
针对呼包鄂城市圈高质量与协同发展需求,运用灰色联熵法和综合指数法对2008～2017年城市综合承载力时空演进进行评价分析.结果表明:(1)呼包鄂3市综合承载力呈波动上升趋势,经济驱动是主要动能;(2)包头、鄂尔多斯综合承载提升短板分别为基础公共服务能力和资源环境;(3)空间维度承载优势从高到低的顺序为:包头—鄂尔多斯—呼市,三者协同发展较差.