Stir octadecyl-modified borosilicate disk for the liquid phase microextraction of triazine herbicides from environmental waters

摘要: Abstract In the present article, a novel extraction/stirring approach in liquid phase microextraction context is presented. The new technique based on octadecyl coated borosilicate disks which act as support of organic extracting solvent thanks to hydrophobic interactions. disk integrated stirring element favors transference analytes extraction phase. proposed procedure has been characterized using determination nine herbicides water samples by ultra performance chromatography (UPLC) combined with ultraviolet (UV) detection model analytical problem. All variables involved have studied and optimized depth provides enrichment factors range from 79 839. method analytically basis its linearity, sensitivity precision. Limits were 0.14 μg/L (atrazine) 0.56 μg/L (terbumeton) precision better than 7.3% (expressed relative standard deviation). Relative recoveries close 100%, demonstrated applicability stir octadecyl-modified for