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基于锌与 1 (2 吡啶偶氮 ) 2 萘酚 (简称PAN)形成的配合物可被氯仿萃取 ,从高盐基体样品中分离富集锌 ,利用自行设计的分相器 ,实验确定了最佳的流动注射在线萃取 火焰原子吸收光度法测定锌的流路系统和化学反应条件。在选定的工作条件下 ,其RSD和检出限分别为 4 3 % (c=0 6 μg/mL ,n =1 1 )和0 0 3 μg/mL ,测定速度为 2 5样 /h。用于实际样品的测定 ,加标回收率为 97%～1 0 6 %。
The complex based on zinc and 1 (2-pyridylazo) 2-naphthol (PAN) can be extracted by chloroform, zinc is separated and enriched from the high-salt matrix sample. The best phase separator Flow Injection On Line Extraction and Flame Atomic Absorption Spectrophotometry for the Determination of Zinc Flow Path and Chemical Reaction Conditions. The RSDs and the detection limits were 43% (c = 0 6 μg / mL, n = 1 1) and 0 0 3 μg / mL for the selected working conditions, respectively, at a rate of 25 samples / h. For the actual determination of the sample, the standard recovery was 97% ~ 106%.