网页1 天前 · Aluminum crimp caps (inner diameter of 1 cm) for 2.0 mL gas chromatography (GC) vials were purchased from Thermo Fisher Scientific Co. (Waltham, MA, USA). Filter paper was obtained from Spectrum Chemical Co. (New Brunswick, NJ, USA). Capillary tubes with an inner diameter of 1.04 mm were obtained from Drummond Scientific Co. (Broomall, PA, USA).