CAJ | 학술논문

采用石墨炉原子吸收光谱法（ GFAAS）测定标准物质绿茶GBW10052（ GSB-30）中的铅。建立了茶叶中铅不确定度的数学模型，分析了测量过程中的不确定度主要来源。通过对各个不确定度的计算合成得出被测量样品中铅含量的扩展不确定度和相对不确定度。当置信概率95％，且取扩展因子k＝2时，茶叶中铅扩展不确定度为0.0134 mg/kg。
채용석묵로원자흡수광보법（ GFAAS）측정표준물질록다GBW10052（ GSB-30）중적연。건립료다협중연불학정도적수학모형，분석료측량과정중적불학정도주요래원。통과대각개불학정도적계산합성득출피측량양품중연함량적확전불학정도화상대불학정도。당치신개솔95％，차취확전인자k＝2시，다협중연확전불학정도위0.0134 mg/kg。
Through measurement of lead in standard reference material of tea was detected by graphite furnaceatomic absorption spectrometry ( GFAAS).The mathematic model of uncertainty evaluation was established.The main sources of the uncertainty in the measurement process were analyzed and estimated.When k=2 (95%confidence probability), the lead content in the standard reference material of tea was 0.013 4 mg/kg.