Shahinfard, *Naser Samadi, Vahid. 2013. “Carbon Nanotube/Polypyrrole Composites As a Novel Solid Phase Microextraction Fiber Coating for the Preconcentration of N-Alkanes from Aqueous Media”. Journal of Biomedical and Pharmaceutical Research 2 (2). https://jbpr.in/index.php/jbpr/article/view/414.