研究所、轉學考(插大)-分析化學題庫下載題庫

(1) QuEChERS stands for Quick, Easy, Cheap, Effective, Rugged, and Safe.

(2) It uses a large amount of organic solvent.

(3) It consists of two steps: extraction of analytes followed by sample cleanup to remove matrix components.

(4) The procedures include vigorously shaking and centrifuge.

(5) Commonly, low salt concentration is applied to create aqueous and organic phases, and drives organic analytes into the organic phase. Your answer:
(A) (1), (2) and (3)；
(B) (1), (3) and (4)；
(C) (1) and (4)；
(D)(1), (4) and (5)；
(E) (2), (3) and (5).