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多家实验室Zeta电位量值计量比对及分析
赵德英, 贾志立, 季允, 金森林, 姚雅萱, 蒲成, 任玲玲
计量学报 ›› 2025, Vol. 46 ›› Issue (11) : 1670-1676.
PDF(1373 KB)
PDF(1373 KB)
多家实验室Zeta电位量值计量比对及分析
Comparison and Analysis of Zeta Potential in Multiple Laboratories
Zeta电位是表征颗粒表面电荷性质的核心参数,为科学、系统地评估我国检测实验室在Zeta电位测量方面的综合能力,全国新材料与纳米计量技术委员会协同中国新材料与标准计划组织,成功策划并组织了国内首次Zeta电位量值计量比对活动,并由中国计量科学研究院新材料计量研究室担任主导实验室。为确保比对的公正性和科学性,主导实验室确定了比对的基本框架、测量方法和实施方案,参比实验室严格执行。在此基础上,此次比对不仅评定了各实验室的测量不确定度,还全面分析了比对结果,揭示了Zeta电位测量过程中存在的关键技术问题及其对测量结果的影响,并提出了针对性的解决方案和优化建议。本次Zeta电位量值计量比对不仅评估了我国检测实验室的Zeta电位测量技术水平,还通过问题识别与解决方案的提出,促进了测量技术的优化与提升。同时,此次比对还实现了国内Zeta电位量值的相互认可,为我国新材料研发、生物科技及相关领域的创新发展提供了坚实的计量支撑。
Zeta potential is a core parameter to deeply characterize the surface charge properties. In order to scientifically and systematically evaluate the comprehensive ability of China’s testing laboratories in Zeta potential measurement, the National New Materials and Nano Metrology Technology Committee (MTC29), in collaboration with the China New Materials and Standard Program (VAMAS-in-China), successfully planned and executed the first domestic measurement comparison of Zeta potential value, and the leading laboratory is New Materials Metrology Laboratory, National Institute of Metrology. To ensure the fairness and scientificity of the comparison, the leading laboratory determined the basic framework, measurement methods, and implementation plan for the comparison, which were strictly implemented by the reference laboratory. On this basis, this comparison not only evaluated the measurement uncertainty of each laboratory, but also comprehensively analyzed the comparison results in depth, revealing the key technical issues in the measurement process of Zeta potential and their impact on the measurement results, and proposed targeted solutions and optimization suggestions. This Zeta potential measurement comparison not only evaluated the technical level of Zeta potential measurement in China's testing laboratories, but also promoted the optimization and improvement of measurement technology through problem identification and solution proposal. At the same time, this comparison also achieved mutual recognition of the value of Zeta potential in China, providing solid metrological support for the innovative development of new materials, biotechnology, and related fields in China.
Zeta电位 / 胶体体系 / 电泳光散射 / 计量比对 / 测量能力
Zeta potential / colloidal system / electrophoretic light scattering / measurement comparison / measurement ability
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