研究目的
To develop, optimize, and validate an analytical method for the determination of 10 N-Nitrosamines in fresh meats and meat products using high performance liquid chromatography coupled to UV diode array detection.
研究成果
The developed method is a reliable and accurate alternative for the determination of 10 N-Nitrosamines in fresh meats and meat products, suitable for food safety and quality control purposes. It meets the validation criteria set by the Decision No. 657/2002/EC, with satisfactory precision, recovery percentages, and measurement uncertainty.
研究不足
The method's sensitivity is lower compared to mass spectrometry techniques, and the sample preparation process may be time-consuming without automated SPE systems.
1:Experimental Design and Method Selection:
The method is based on sample purification by solid phase extraction using an anion exchange polymeric sorbent and separation/detection by high performance liquid chromatography coupled to UV diode array detection.
2:Sample Selection and Data Sources:
Samples included fresh meats and meat products, with a focus on processed meats containing nitrite as a preservative.
3:List of Experimental Equipment and Materials:
HPLC system (WatersTM 2690 Separations Module, WatersTM 996 PDA Detector), C16 RP column (AcclaimTM PolarAdvantage), various chemicals for sample preparation and analysis.
4:Experimental Procedures and Operational Workflow:
Sample extraction and cleanup optimization, chromatographic separation optimization, method validation including selectivity, linearity, detection and quantification limits, accuracy, robustness, and measurement uncertainty.
5:Data Analysis Methods:
Statistical analysis including Student’s t-test and one-way ANOVA for validation data analysis.
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