ZHAO Shan-shan,YANG Xiao-ting,ZHAO Hong-yang,et al.Development of Certified Reference Materials for Carbon and Nitrogen Stable Isotope Ratios in Mutton[J].Journal of Instrumental Analysis,2023,42(07):841-848.
ZHAO Shan-shan,YANG Xiao-ting,ZHAO Hong-yang,et al.Development of Certified Reference Materials for Carbon and Nitrogen Stable Isotope Ratios in Mutton[J].Journal of Instrumental Analysis,2023,42(07):841-848. DOI: 10.19969/j.fxcsxb.23031702.
Development of Certified Reference Materials for Carbon and Nitrogen Stable Isotope Ratios in Mutton
It is necessary to develop new meat stable isotope reference materials to improve the accuracy of stable isotope technology for meat origin tracing applications as few meat isotope reference materials are available from the certified sources.In this paper,two new defatted powdered mutton reference materials(RMs) GSB 11-3959-2022 and GSB 11-3960-2022 with different ,δ,13,C and ,δ,15,N values were developed,and their homogeneity,the short- and long-term stability were studied.A joint evaluation was performed by elemental analyzer-isotope ratio mass spectrometry(EA-IRMS) in 7 national laboratories.All reported data were tested by Grubbs criterion,Dixon criterion and Cochrane criterion,while the outliers were removed and the property values and uncertainties were obtained.The valued ,δ,13,C and ,δ,15,N for the GSB 11-3960-2022 were (-18.27 ± 0.26)‰ and (3.25 ± 0.16)‰,respectively.The valued ,δ,13,C and ,δ,15,N for the GSB 11-3959-2022 were (-19.72 ± 0.23)‰ and (5.29 ± 0.14)‰,respectively.The two mutton isotope reference materials developed in this paper provide a reference for the determination of carbon and nitrogen stable isotope ratios in meat.
关键词
脱脂羊肉粉标准样品元素分析-稳定同位素比值质谱法均匀性稳定性
Keywords
defatted powdered muttonreference materialselemental analyzer-isotope ratio mass spectrometryhomogeneitystability
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