A novel application of mesoporous silica material for extraction of pesticides

作者：Barreto Alysson S; Aquino Adriano; Silva Silvia C S; de Mesquita Maria Eliane; Calhorda M J; Saraiva M S; Navickiene Sandro^*

来源：Materials Letters, 2011, 65(9): 1357-1359.

DOI：10.1016/j.matlet.2011.01.082

• Porous materials
• Sol-gel preparation
• Thermal analysis
• X-ray techniques

The mesoporous silica material MCM-41 was prepared by the sol-gel method and characterized using X-ray diffraction (XRD), N(2) adsorption-desorption and thermogravimetric analysis. The material was tested for extraction of trichlorfon, pyrimethanil, tetraconazole, thiabendazole, imazalil and tebuconazole from mango fruit, with analysis using gas chromatography-mass spectrometry (GC/MS). In experiments carried out in triplicate, at a 1.0 mg/kg concentration level, recoveries using the MCM-41 sorbent were in the range 73-103%. Comparison of MCM-41 with commercially available silica gel showed that MCM-41 was a similar extracting phase for the pesticides investigated with a significant cost advantage over this conventional material.

• 出版日期2011-5-15