Document Type: Research Paper
Department of Chemistry, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran
Department of Chemistry, Islamic Azad University, North Tehran Branch, Tehran, Iran
Carbaryl was analyzed in olive oil using solid phase extraction (SPE) with lanthanum silicate as a new solid sorbent followed by high performance liquid chromatography with UV-VIS detection (HPLC-UV). The various parameters influencing extraction such as different eluents, volumes of eluent, conditioning pH and several spiked concentrations were studied to determine the optimum conditions for lanthanum silicate- SPE. Mean recovery with methanol as eluent was 76% with RSD 2-3% in concentration range of 0.5-32 ppm. The limit of detection (LOD= 1.03 mg kg-1) was lower than maximum residue limit (MRL) established by WHO/FAO.