【摘要】：應(yīng)用電膜萃取-紫外-可見分光光度法測定食品中砷。對影響實驗的參數(shù)進(jìn)行優(yōu)化:有機(jī)溶劑為鄰苯二甲酸二異壬酯在正辛醇溶液中體積分?jǐn)?shù)2.5%、電壓70 V、萃取時間15 min、接受相溶液pH 13、攪拌速率700 r/min。砷的檢出限為1.5μg/L,回收率為96%~104%,相對標(biāo)準(zhǔn)偏差(n=5)為0.1%~3.6%。本方法具有選擇性好、操作簡單、成本低等特點,可用于食品中總砷的分析。
[Abstract]:Determination of arsenic in food by electromembrane extraction-UV-vis spectrophotometry. The parameters affecting the experiment were optimized as follows: the volume fraction of diisononyl phthalate was 2.5% in n-octanol solution, the voltage was 70 V, the extraction time was 15 min, the phase solution was pH 13, and the stirring rate was 700 r 路min. The detection limit of arsenic is 1.5 渭 g / L, the recovery is 96% 鈮，

本文編號：2495729