Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber

Figure 2

GC-MS chromatogram of the mixed standard solution of 7 pyrethroids. (1) bifenthrin, (2) fenpropathrin, (3) permethrin, (4) cyfluthrin, (5) cypermethrin, (6) fenvalerate, and (7) deltamethrin.