CAJ | 학술논문

目的采用均匀设计法优化食品中碘的碱灰化-砷铈催化分光光度法的最佳测定条件.方法根据现行食品中碘的碱灰化测定法,用均匀设计U*8(84)表安排实验条件(碳酸钾和硫酸锌混合液、氯酸钾和氯化钠混合液、灰化温度、灰化时间),测定大豆中的碘含量,并计算回收率,建立回收率和各测定条件的数学模型,计算测定条件的最优组合,最后使用该组合平行3次测定大豆中的碘含量,进行验证.结果测定条件的最优组合为:碳酸钾和硫酸锌混合液1.5 ml,氯酸钾和氯化钠混合液1.5 ml,灰化温度550℃,灰化时间4.5 h.3次大豆碘含量测定的平均回收率为101.6％.结论均匀设计法找到的最优测定条件的组合应用于食品(大豆)中碘的测定,结果满意.
목적 채용균균설계법우화식품중전적감회화-신시최화분광광도법적최가측정조건.방법 근거현행식품중전적감회화측정법,용균균설계U*8(84)표안배실험조건(탄산갑화류산자혼합액、록산갑화록화납혼합액、회화온도、회화시간),측정대두중적전함량,병계산회수솔,건립회수솔화각측정조건적수학모형,계산측정조건적최우조합,최후사용해조합평행3차측정대두중적전함량,진행험증.결과 측정조건적최우조합위:탄산갑화류산자혼합액1.5 ml,록산갑화록화납혼합액1.5 ml,회화온도550℃,회화시간4.5 h.3차대두전함량측정적평균회수솔위101.6％.결론 균균설계법조도적최우측정조건적조합응용우식품(대두)중전적측정,결과만의.
Objective To apply a uniform design method to optimize the experimental conditions for iodine determination in foods by alkaline ashing-As3+-Ce4+ catalytic spectrophotometric method.Methods According to the current method for determination of food iodine,uniform design table U*8 (84) for experimental conditions was set up as(K2CO3-ZnSO4 mixed solution,KClO3-NaCl mixed solution,ashing temperature,ashing time),iodine content in soybean was determined,and recovery rate was calculated.Mathematical model of recovery rate and various test conditions was established.Optimal combinational assay conditions were calculated.As a verification test,the optimal combinational assay was repeatedly used to determine iodine content in soybean for 3 times.Results The optimal combination for determination conditions was:K2CO3-ZnSO4 mixed solution 1.5 ml and KClO3-NaCl mixed solution 1.5 ml,ashing temperature 550 ℃ and ashing time 4.5 h.The average recovery rate for determination of iodine content in soybean was 101.6％ for the 3 times.Conclusion The optimal combination of determination conditions by uniform design is used in determination of iodine content of food(soybean) with satisfactory results.