Page 357 - Multidimensional Chromatography

348 Multidimensional Chromatography

Reference 53 28 50 34

LOD a ( g l 1 ) e 0.2 e,f 0.5 1 1 0.2–0.5 0.02–0.1 e

Clean-up with M-1 Transfer with M-2 c 0.7 ml CH 3 CN/H 2 O v/v) 4 ml MeOH/CH 3 CN/H 2 O gradient 2.21 ml CH 3 CN (35 %) in buffer (pH 5.5) 0.53 ml CH 3 CN (35 %) in buffer (pH 5.5) 2.12 ml CH 3 CN (35 %) in buffer (pH 5.5) 0.41 ml CH 3 CN (35 %) in buffer (pH 5.5) 2.6 ml CH 3 CN/H 2 O v/v) 4.2 ml CH 3 CN/H 2 O

M-2: (70/30, M-2: M-1, M-1: M-2: M-1: M-2: M-1: (20/80, M-2: gradient

(continued) C-1 C-2 b 4.6 C 18 ,3 m 4.6 C 18 ,3 m 4.6 C 18 ,5 m 4.6 NH 2 ,5 m 4.6 C 18 ,5 m 4.6 NH 2 ,5 m 4 C 18 ,5 m 4 C 18 ,5 m

Table 13.1 100 100 30 250 30 250 30 125

Injection volume ( l) 2000 2000 2000 2000

Detection a (nm) UV (360) FD (263/317) FD (263/317) UV (220)

Matrix Air Water Soil Water a UV, ultraviolet; FD, fluorescence detection. b C-1, first column; C-2, second column; dimensions given in mm. c M-1, first mobile phase; M-2, second mobile phase.

Analyte Terbuthylazine Terbutryn Aldehydes and ketones Gluphosinate Glyphosate AMPA Glyphosate AMPA Atrazine DIA DEA HA d Limit of detection. e After solid-phase extraction. f LOD in pmd l 1