论文部分内容阅读
采用正交试验设计优化介质辅助微波消解样品的条件,以电感耦合等离子体发射光谱法(ICP-AES)测定腐竹中硼砂。考察了微波消解功率、混合酸的比例、混合酸用量、试样消解时间4个因素在不同水平条件下对仪器响应值的影响。在优化了微波消解条件下测定实际样品,方法检出限为0.4mg/kg,加标回收率为91.2%～103.9%,相对标准偏差<2%。
Orthogonal experimental design was used to optimize the conditions of medium-assisted microwave digestion of samples, and the determination of borax in yuba by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The effects of microwave digestion power, the ratio of mixed acid, the amount of mixed acid, the digestion time of the sample on the instrument response under different levels were investigated. The detection limit of the method was 0.4mg / kg, the spiked recoveries were 91.2% ~ 103.9% and the relative standard deviations were less than 2% when the microwave digestion was optimized.