加压流体萃取仪校准方法研究

Researchon Calibration Method of Pressurized Fluid Extractor

加压流体萃取仪广泛应用于环境监测、食品安全检测等领域,萃取池内的静态萃取温度及时间对前处理结果具有重要影响。本文结合其工作原理、结构和控制参数对萃取结果的影响,以及行业标准提出的关键技术参数及计量需求,提出一种适用的校准方法,并使用高承压性能无线温度记录器进行试验验证。结果表明:该方法能有效评估该萃取仪的关键参数,对周期性计量和质量控制具有重要意义。

Pressurized fluid extractor is widely used in environmental monitoring,food safety detection and other fields.The static extraction temperature and time in the extraction tank have an important influence on the pre-treatment results.In this paper,based on the influence of its working principle,structure and control parameters on extraction results,as well as the key technical parameters and measurement requirements proposed by industry standards,a suitable calibration method is proposed,and the wireless temperature recorder with high pressure per-formance is used for test verification.The results show that this method can effectively evaluate the key parameters of the extractor,which is of great significance for periodic measurement and quality control.