采用重量-容量法制备1-(甲硫基)亚乙基氨基N-甲基氨基甲酸酯溶液标准物质.在(20±2)℃的环境温度下,定量称取国家有证标准物质,溶于色谱纯甲醇中,以A级容量瓶定容,分装到2 mL安瓿瓶内,每瓶装量为1 mL,质量浓度为100 μg/mL.试验数据及统计结果表明,所研制的标准物质均匀性、稳定性良好.经评定,1-(甲硫基)亚乙基氨基N-甲基氨基甲酸酯溶液标准物质定值结果的相对扩展不确定度为2%(k=2).该标准物质可用于1-(甲硫基)亚乙基氨基N-甲基氨基甲酸酯分析检测的方法评价和仪器校准.%1-(methylthio)-ethylideneamino methylcarbamate solution reference material was prepared by weight-capacity method. At an ambient temperature of (20±2)℃, national certified standard substance was quantitatively dissolved in chromatographic pure methanol, then the solution was split into 2 mL ampoules. Each ampoule had 1 mL solution with the concentration of 100 μg/mL. The tests were carried out which showed that the uniformity and stability of 1-(methylthio)-ethylideneamino methylcarbamate solution reference material were satisfied. The relative expanded uncertainty of the reference material determination result was evaluated as 2%(k=2). The reference material can be used for analysis method evaluation and instrument calibration.
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