文摘
This paper reports the development of an automated method of QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) using pipet tips fitted with filtration screens and containing primary鈥搒econdary amine, magnesium sulfate, and graphitized carbon black. These tips are referred to as 鈥淨uEChERS Tips鈥? Using loosely contained sorbent, dispersive solid phase extraction (dSPE) cleanup was performed with the QuEChERS Tips and automation. The main advantage of the QuEChERS Tips is that they are readily automated because this dSPE method does not require centrifugation. High recoveries (70鈥?17%) and good reproducibilities (<12%) are shown for over 200 pesticides using automated QuEChERS Tips and GC-MS in various sample matrices.
Keywords:
QuEChERS; pesticides; GC-MS; DPX