首页|饲料检测方法中检出限、定量限的研究与应用

饲料检测方法中检出限、定量限的研究与应用

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对检出限和定量限在饲料检测领域中应用进行了阐述,检出限和定量限在饲料行业的各类检测标准中的表述模式并未完全统一,部分标准中规定了检出限和定量限的限定条件,不同的取样质量、定容体积与稀释倍数等前处理方法会影响方法检出限与定量限的大小,部分标准只规定了最低检测浓度(如ng/mL).在使用方法标准时,通过判断方法中检出限和定量限的表述模式,正确理解其含义,才能有效地选择合适的检测方法.文中还分析了仪器检出限与方法检出限的区别,以及如何确定两项指标,利用其来评判仪器或方法的灵敏度,从而为检测人员完成分析工作提供参考.
Research and application about limit of detection(LOD)and limit of quantification(LOQ)in feed detection
This study aims to expound the application of limit of detection(LOD)and limit of quantification(LOQ)in feed inspection and test.The representation patterns of LOD and LOQ have not been unified in all sorts of feed tests.Some tests have imposed restrictions on LOD and LOQ,but such preprocessing methods as sampling weight,metered volume,and dilution factor could all have an impact on the LOD and LOQ outcomes.Some tests have prescribed the minimum detectable concentration(such as ng/mL).When a test is put into practice,selection of proper detection method is based on correct representation of LOD and LOQ and understanding of their meanings.In this paper,we also studied the distinction between instrumental LOD and methodological LOD and how to determine those two indicators and use them to judge about the sensitivity of instrumental or methodological methods,in the hope to shed some light on the analytic work of inspectors.

feedway of detectionlimit of detection(LOD)limit of quantification(LOQ)

黄昌郡、刘璐、杜言、杨青、郭团结

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国粮武汉科学研究设计院有限公司//国家饲料质量检验检测中心(武汉),湖北武汉 430079

青岛新嘉生物技术有限公司,山东 青岛 266100

饲料 检测方法 检出限 定量限

2024

粮食与饲料工业
国家粮食储备局 武汉科学研究设计院

粮食与饲料工业

CSTPCD
影响因子:0.513
ISSN:1003-6202
年,卷(期):2024.(4)