Print version ISSN 0100-4042
SCHWANZ, Thiago Guilherme et al. Determination of polychlorinated biphenyls in corn by solid phase extraction followed by gas chromatography-mass spectrometry. Quím. Nova [online]. 2012, vol.35, n.3, pp. 553-558. ISSN 0100-4042. http://dx.doi.org/10.1590/S0100-40422012000300021.
This paper describes an analytical method for analyzing polychlorinated biphenyls in corn samples using solid phase extraction (SPE) followed by determination by GC-MS. All calibration curves proved linear (r> 0.99). Recoveries ranged between 74.1 and 110.6% with relative standard deviation lower than 20% for all compounds. The limits of quantitation for the method were between 0.025 and 0.1 ng g-1. Of the 51 samples analyzed, PCB 180 showed the highest frequency, being detected in more than 39%, followed by PCB 138, detected in more than 33% of samples.
Keywords : PCB; corn; GC [MS].