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Multidimensional Chromatography in Environmental Analysis 347

Reference 50 49 48 51 46 52 46 33

LOD d ( g l 1 ) 0.2 0.01 0.02 10 1 0.1 e 1 0.1 0.1 0.1 0.1 0.1–0.2

Clean-up with M-1 Transfer with M-2 c 2.5 ml MeOH (10%) 0.5 ml MeOH (65%) 1.1 ml MeOH (23%) in buffer (pH 2.9) 0.8 ml MeOH (60%) in buffer (pH 2.9) 2.6 ml CH 3 CN (1%) (0.2%) 0.44 ml CH 3 CN (1%) (0.2%) 1.7 ml CH 3 CN (40%) 0.4 ml CH 3 CN (50%) 4.7 ml MeOH (50%) in phosphate buffer 0.5 ml MeOH (60%) in phosphate buffer 1 ml MeOH (5%) in TFA (0.05%) 0.5 ml MeOH (50%) in TFA (0.05%) 5.85 ml CH 3 CN (47.5%) 0.4 ml CH 3 C
Examples of the application of LC–LC in environmental analysis

M-1: M-2: M-1: M-2: M-1: and NH 3 M-2: and NH 3 M-1: M-2: M-1: M-2: M-1: M-2: M-1: M-2: M-1: (40/60,

3.2 C 18 ,7 m 4.6 C 18 ,5 m 3.2 C 18 ,7 m 4.6 C 18 ,3 m 4.6 C 18 ,5 m 4.6 C 18 ,5 m 4.6 C 18 ,3 m 4.6 C 18 ,3 m 4.6 C 18 ,3 m 4.6 C 18 ,3 m 5 m 4.6 C 18 ,3 m 3 mm 4.6 C 18 ,3 m 4 C 18 ,5 m 4.6 C 18 ,3 m

C-1 C-2 b 3 GFF, 4.6 C 18 ,

15 150 15 50 150 150 50 100 50 100 10 100 50 100 30 100

Injection volume ( l) 100 75 200 770 2000 400 4000 20 000

Table 13.1 Detection a (nm) UV(254) UV (254) UV (254) UV (365) UV (365) UV (365) UV (233) UV (237) UV (220) UV (228) UV (244) UV (223)

Matrix Water Soil Water Water Water Water Water Water

3,4-dichloroaniline Ethylenthiourea Methylisocyanate Chlorophenoxy

Analyte Bromacil Diuron DNOC Dinoterb Dinoseb Bentazone acids Isoproturon Simazine Atrazine