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本研究采用重量法配制有机液态混合标样 ,并对配制方法、混合标样的均匀性、稳定性及影响不确定度的因素进行了研究 ,并用气相色谱法进行了比对分析。经稳定性监测 ,稳定度大于等于一年 ,不确定度小于± 2 %。
In this study, organic liquid mixed standards were prepared by gravimetric method. The preparation methods, the uniformity and stability of mixed standard samples and the factors influencing the uncertainty were studied and compared by gas chromatography. After stability monitoring, the stability is greater than or equal to one year, the uncertainty is less than ± 2%.