CAJ | 학술논문

建立了测定米线中甲醛次硫酸氢钠(甲醛次硫酸氢钠)的离子色谱方法。样品采用0.03 mol／L的NaOH溶液提取，离子色谱分离，KOH淋洗液洗脱，电导检测器测定。结果表明：方法的线性范围为2.0～50.0μg／mL，检出限为0.007μg／mL，测定结果的相对标准偏差不大于2.72%(n=6)，加标回收率为91.4%～110.7%。该方法前处理简单、样品稳定性好、准确度高，具有较高的实用价值。
건립료측정미선중갑철차류산경납(갑철차류산경납)적리자색보방법。양품채용0.03 mol／L적NaOH용액제취，리자색보분리，KOH림세액세탈，전도검측기측정。결과표명：방법적선성범위위2.0～50.0μg／mL，검출한위0.007μg／mL，측정결과적상대표준편차불대우2.72%(n=6)，가표회수솔위91.4%～110.7%。해방법전처리간단、양품은정성호、준학도고，구유교고적실용개치。
An ion chromatography method was developed to determine sodium bisulfoxylate formaldehyde in rice noodles.The sample was extracted with sodium hydroxide solution of 0.03 mol/L and separated by ion chromatograph, then determined by electrical conductivity detector after being eluted with aqueous potassium hydroxide. The results showed that thelinearity range of this method was 2.0–50.0 mg/L, and the limit of detection was 0.007 mg/L. The relative standard deviation of determination results was not more than 2.72%(n=6). The recovery was 91.4%–110.7%. This method is of simple pretreatment, better sample stability,higher accuracy and better practical uses.