Lfp

m-Bondapak C18 30/3.9/5 LiChrosorb RP-18 (5 ┬┐im) p.-Bondapak C18 25/4.1/10

LiChrosorb-Si60 25/4.6/5

Spherisorb 25/2.1/5

Spherisorb 25/4.6/5 Shim-pack CLC-ODS 15/4.7/5

LiChrospher 100 RP-18e 15/4.0/5

Acetonitrile/water (gradient) Na2HPO4 (9 g/l)/acetonitrile (95:5) Methanol/acetonitrile/phosphate buffer, pH 3.5 (57:38:5) 1.5% acetone/n-hexane

Hexane/isopropanol (96.5:3.5)

Photolysis/MS (2-6 ng) Photolysis/ED (29 pg) ED (0.2 ng)

7 mM ammonium phosphate, pH 3 1-heptane UV

or 1-octanesulfonate 5 mM 0.1 M phosphate buffer, pH 1.5 EC (1 X 10"8 M)

10 mM phosphate buffer/methanol (gradient) UV (20- 250 ng/ml)

A'-Nitrosodialkylamines NDMA

A'-Nitrosopiperidine

NDMA,

A'-nitrosodibutylamine NDMA,

A'-nitrosopyrrolydine, A'-nitrosomorpholine, A'-nitrosodiphenylamine NDMA and its metabolites

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