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《Modern Food Science and Technology》 2007-09
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Research On HG-AFS Determination of Trace Arsenic in Vegetable Oil

FU Shu-lin (Quality and Technology Supervision of Nanhai Area,Foshan 528200,China) LAN Jie-na (Chenghai Food Company,Shantou 515000,China)  
The trace amount of arsenic (As) in vegetable oil were determined by hydride generation atomic fluorescene spectrometry method (HG-AFS).The programmable temperature ashing of samples could avoid the As loss.2% HCI and 15 g/L KBH_4 were used as acid medium and reducing agent,respectively.The effects of some factors on the fluorescence intensity of arsenic,such as acid medium,HCl concentration,the amount of KBH_4,the lamp electricity,etc.,were investigated and optimized.Within the As content range of 0.0~35.0μg/L,a linear calibration curve for arsenic was abtained and the correlative coefficient and detection limit were of 0.9998 and 0.04 ug/L,respectively. Besides,the recovery rates,the RSDs of the standard solution and standards were found to be 85.3%~95.5%,0.57%~1.20% and 4.87%~5.12 %,respectively.The method was simple,fast and with high sensitivity,which could be applied to the analysis of trace amounts of arsenic in vegetable oil.
【CateGory Index】: TS225
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