@article{paperid:1022946, author = {Sarafraz Yazdi, Ali and Amiri, Amir Hassan and Ronaghi, Gholam Hossein and Eshtiagh Hosseini, Hossein}, title = {A novel solid-phase microextraction using coated fiber based sol–gel technique using poly(ethylene glycol) grafted multi-walled carbon nanotubes for determination of benzene, toluene, ethylbenzene and o-xylene in water samples with gas chromatography-flam ionization detector}, journal = {Journal of Chromatography A}, year = {2011}, volume = {1218}, number = {1}, month = {July}, issn = {0021-9673}, pages = {5757--5764}, numpages = {7}, keywords = {Keywords: Solid-phase microextraction Multi-walled carbon nanotubes Sol–gel technology BTEX Water samples}, }