Fariba Tadayon and  Elmira Hassanlou and  Hasan Bagheri and  Mostafa Jafarian,  Ligandless Extraction and Determination of Trace Amounts of Lead in Pomegranate, Zucchini and Lettuce Samples after Dispersive Liquid-Liquid Microextraction with Ultrasonic Bath and Optimization of Extraction Condition with RSM Design.   journal   = {International Journal of Nutrition and Food Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 115(7). 876 - 879
    [viewed 12 May 2021]. Available from: https://publications.waset.org/pdf/10004927.