矿泉水中铜绿假单胞菌能力验证结果分析与讨论

目的:通过参加能力验证来提高实验室微生物检测能力,考核技术人员工作水平,提高实验室检测水平,增强实验室综合竞争力.方法:依据《食品安全国家标准饮用天然矿泉水检验方法》(GB 8538—2016)中铜绿假单胞菌的微生物检验方法,结合《矿泉水中铜绿假单胞菌的检测能力验证参试指导书》ACAS-PT 1117(2021)]进行操作.结果:样品21-M873的鉴定结果为铜绿假单胞菌阳性,计数结果为8.7×103 CFU/250 mL;样品21-Q877的鉴定结果为铜绿假单胞菌阳性,计数结果为3.8×103 CFU/250 mL.结论:本次能力验证活动取得了满意的结果,达到了实验室内部质控、人员考核、水平验证的预期目的,为日常检测工作积累了宝贵的经验.

Analysis and Discussion on the Proficiency Test Results of Pseudomonas Aeruginosa in Mineral Water

Objective:By participating in proficiency testing to improve the laboratory’s microbiological testing capabilities,assess the work level of technical personnel,improve the laboratory testing level,and enhance the comprehensive competitiveness of the laboratory.Methods:According to the microbiological test method of Pseudomonas aeruginosa in the National Food Safety Standard-Inspection Method for Drinking Natural Mineral Water(GB 8538—2016),combined with Guidebook for Proficiency Testing of Pseudomonas aeruginosa in Mineral Water,ACAS-PT 1117(2021).Results:The identification result of sample 21-M873 was positive for Pseudomonas aeruginosa,and the count result was 8.7×10³ CFU/250 mL;the identification result of sample 21-Q877 was positive for Pseudomonas aeruginosa,and the count result was 3.8×10³ CFU/250 mL.Conclusion:This proficiency testing activity has achieved satisfactory results,achieved the expected goals of internal quality control,personnel assessment,and level verification in the laboratory,and accumulated valuable experience for daily testing work.