Wadhwa, ...., Kazi, ...., Tuzen, ...., Afridi, ...., Khan, ...., & Brahman, .... 2014 Dec 1. Application of Polyhydroxybutyrate-b-polyethyleneglycol (a block co-polymer) for Solid Phase Extraction of Lead and Copper in Different Food Samples. Pakistan Journal of Analytical & Environmental Chemistry. [Online] 15:1