Departamento de Química, Universidade Federal de Sergipe, Av. Marechal Rondon s/n, São Cristóvão, SE 49100-000, Brazil.
Bull Environ Contam Toxicol. 2013 Aug;91(2):160-4. doi: 10.1007/s00128-013-1018-3. Epub 2013 May 31.
A method was developed using matrix solid-phase dispersion, together with liquid chromatography with ultraviolet diode array detector for determination of carbofuran, difenoconazole, β-cyfluthrin, spirodiclofen and thiophanate-methyl in stem of coconut palm. The best results were obtained using 2.0 g of stem, 1.6 g of Florisil as sorbent and cyclohexane:acetone mixture (4:1). The method was validated using stem samples spiked with pesticides at four concentration levels (0.05-2.0 μg/g). Average recoveries ranged from 70 % to 114.3 %, with relative standard deviations between 1.2 % and 19.2 %. Detection and quantification limits were in the ranges 0.02-0.03 and 0.05-0.1 μg/g, respectively.
建立了一种采用基质固相分散法与紫外二极管阵列检测器的液相色谱法，用于测定椰子茎秆中的克百威、三唑酮、β-氯氟氰菊酯、螺虫乙酯和甲基硫菌灵。采用 2.0 g 茎秆、1.6 g Florisil 作为吸附剂和环己烷:丙酮混合物（4:1），得到最佳结果。采用在四个浓度水平（0.05-2.0 μg/g）下用农药对茎秆样品进行加标验证的方法。平均回收率在 70%-114.3%之间，相对标准偏差在 1.2%-19.2%之间。检测限和定量限分别为 0.02-0.03 和 0.05-0.1 μg/g。
