论文部分内容阅读
运用卡尔曼滤波递推法,以2-(5-溴-2-吡啶偶氮)—5-二乙氨基苯酚(5-Br-PADAP)为显色剂,建立了同时测定锰、铁、铜、锌、镉析相光度法.在pH9.0硼酸-氢氧化钠介质中,胶束溶液在95℃加热1h,配合物被Triton X-100相完全富集,最大吸收峰分别为锰566nm、铁556nm、铜560nm、锌562nm、镉557nm,工作曲线范围除镉为0~8μg/5ml外,其余均为0~10μg/5ml.应用于大米中锰铁铜锌镉的同时测定,结果满意.
Using Kalman filter recursion method, the simultaneous determination of manganese, iron, copper (Ⅱ) with 2- (5-bromo-2-pyridylazo) -5-diethylaminophenol , Zinc and cadmium were determined by spectrophotometry.The micellar solution was heated at 95 ℃ for 1 h in pH9.0 boric acid-sodium hydroxide solution, the complex was completely enriched with Triton X-100 phase, the maximum absorption peak was 566 nm, Iron 556nm, copper 560nm, zinc 562nm, cadmium 557nm, the working curve range is 0 ~ 10μg / 5ml except cadmium 0 ~ 8μg / 5ml, which is applied to the simultaneous determination of Mn, Fe, Cu, Cd in rice with satisfactory results.