Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), University of Almería, Agri-Food Campus of International Excellence, ceiA3, E-04120 Almería, Spain.
Department of Engineering, Research Centre CIAIMBITAL, University of Almería, E-04120 Almería, Spain.
J Agric Food Chem. 2023 May 17;71(19):7230-7238. doi: 10.1021/acs.jafc.3c00816. Epub 2023 May 8.
The present study addressed the dissipation of the insecticide chlorantraniliprole in tomatoes treated with Altacor 35 WG under laboratory and greenhouse conditions, as well as the identification of transformation products (TPs) and coformulants, performing suspect screening analysis. Analyses were performed by ultra-high-performance liquid and gas chromatography coupled to quadrupole-Orbitrap high-resolution mass spectrometry (UHPLC-Q-Orbitrap-MS and GC-Q-Orbitrap-MS). In all cases, chlorantraniliprole was fitted to a biphasic kinetic model, with values greater than 0.99. Dissipation was noticeably faster in greenhouse studies, in which even 96% dissipation was achieved over 53 days. One TP, IN-F6L99, was tentatively identified in both greenhouse and laboratory studies and was semiquantified by using chlorantraniliprole as the analytical standard, yielding a top value of 354 μg/kg for laboratory studies, whereas values for greenhouse studies fell under the limit of quantitation (LOQ). Finally, a total of 15 volatile coformulants were identified by GC-Q-Orbitrap-MS.
本研究在实验室和温室条件下，针对用 Altacor 35 WG 处理的番茄中杀虫剂氯虫苯甲酰胺的消解，以及转化产物（TPs）和共溶剂的鉴定，进行了嫌疑筛查分析。分析采用超高效液相和气相色谱与四极杆轨道阱高分辨率质谱（UHPLC-Q-Orbitrap-MS 和 GC-Q-Orbitrap-MS）进行。在所有情况下，氯虫苯甲酰胺均拟合为双相动力学模型， 值大于 0.99。在温室研究中，消解速度明显更快，甚至在 53 天内就达到了 96%的消解。在温室和实验室研究中均暂定鉴定出一种转化产物 IN-F6L99，并通过使用氯虫苯甲酰胺作为分析标准进行了半定量分析，在实验室研究中得到的最高值为 354μg/kg，而温室研究中的值低于定量限（LOQ）。最后，通过 GC-Q-Orbitrap-MS 共鉴定出 15 种挥发性共溶剂。
