Variation in accumulation of heavy metals in different verities of sunflower seed oil with the aid of multivariate technique
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- 作者：Rehana Ansari ; Tasneem Gul Kazi ; Muhammad Khan Jamali ; Muhammad Balal Arain ; Muhammad Dowood Wagan ; Nusrat Jalbani ; Hassan Imran Afridi ; Abdul Qadir Shah
- 关键词：Sunflower seed oil ; Varieties ; Microwave ; Heavy metals ; Atomic absorption spectrometry ; Multivariate
- 刊名：Food Chemistry
- 出版年：2009
- 出版时间：1 July 2009
- 年：2009
- 卷：115
- 期：1
- 页码：318-323
- 全文大小：203 K
文摘
In this work, three heavy metals (HMs) cadmium, lead, and zinc were determined in 16 newly breaded varieties of sunflower seed oil, using atomic absorption spectrometry, prior to use of microwave-assisted acid digestion method (MWD). The accuracy of the proposed method was studied by standard addition method and values obtained by conventional wet acid digestion methods (CAM) on same samples. The detection limit obtained from the standard addition curve was 0.327, 3.38, 10.0 ng/ml for Cd, Pb, and Zn, respectively, with high percentage recoveries. Multivariate statistical techniques (cluster and principal component analysis) were applied to modeling classes of different varieties of sunflower seed oils grown in same agricultural plot, on the basis of the analytical data of HMs. The results obtained providing sufficient information on tolerable limit of all three HMs by different varieties of sunflower oil to grow safely.