计量学报2023，Vol.44Issue(12)：1925-1931,7.DOI:10.3969/j.issn.1000-1158.2023.12.20
安德森六级撞击微生物采样器的计量评价及影响因素分析
Influencing Factors Analysis in Quantitative Evaluation of Andersen Six-level Impact Microbial Sampler
摘要
Abstract
Due to the lack of standards and detection technical specifications for Andersen six-level impact microbial samplers,an evaluation method based on the capture efficiency curve for the aerodynamic particle size at a sampling physical efficiency of 50%(Da50)was proposed,and the detection and theoretical calculation of Da50 as well as its influencing factors were analyzed.Five domestic brands of Andersen samplers were tested,and it was found that the measurement results of different manufacturers'products varied significantly,the first or multi-level capture efficiency curves of multiple products corresponded to Da50 outside the particle size range.Research has found that the difference in sampler performance is not caused by insufficient aperture processing accuracy.The research results indicate that the higher the culture medium,the smaller the obtained Da50,under the same height of the culture medium,the ideal distance between layers is about 10 mm.Therefore,the impact height is an important factor affecting the performance of Andersen six-level impact microbial samplers.关键词
生物计量/安德森撞击/微生物采样器/采样效率/空气动力学粒径/撞击距离Key words
biological metrolog/Andersen impact/microbial sampler/sampling efficiency/aerodynamic particle size/impact distance分类
通用工业技术引用本文复制引用
刘佳琪,张国城,田莹,吴丹,沈上圯,李博雅,霍胜伟..安德森六级撞击微生物采样器的计量评价及影响因素分析[J].计量学报,2023,44(12):1925-1931,7.基金项目
国家市场监督管理总局科技计划项目(2021MK003) （2021MK003）
