title: [Comparative chromatographic analyses of s-triazines (author's transl)].
abstract: The applicabilities of gas chromatography (GC), high-performance liquid chromatography (HPLC), thin-layer chromatography (TLC) and high-performance thin-layer chromatography (HPTLC) for residue analysis of s-triazine herbicides are compared. With the conditions discussed the detection limit for the 14 s-triazines was determined as follows: 0.02-0.03 ng in GC alkali flame-ionization detection, 0.8 ng in GC flame-ionization detection, 1 ng in HPLC (UV detection), 3-5 ng in HPTLC (UV detection) and 8-13 ng in TLC (UV detection). The linear range in GC (AFID) was 10(4) whereas in the three liquid chromatographic methods it was 10(2). The reproducibility with a confidence limit of P = 95% had a coefficient of variation of +/- 5%. In routine analysis requiring a large number of separations HPTLC has advantages, because the time for a single separation is only 40 sec.
mesh_terms: D002845:Chromatography / Q000379:methods; D006540:Herbicides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D014227:Triazines
chemical_list: D006540:Herbicides; D010573:Pesticide Residues; D014227:Triazines
vernacular_title: Vergleichende chromatographische Untersuchungen bei s-Triazinen.