Excretion of polychlorinated dibenzo-p-dioxins and -furans in milk of cows fed on dioxins in the dry periodTUINSTRA, L. G. M. T; ROOS, A. H; BERENDE, P. L. M et al.Journal of agricultural and food chemistry (Print). 1992, Vol 40, Num 10, pp 1772-1776, issn 0021-8561Article

Illegal use of β-adrenergic agonists : European CommunitKUIPER, H. A; NOORDAM, M. Y; VAN DOOREN-FLIPSEN, M. M. H et al.Journal of animal science. 1998, Vol 76, Num 1, pp 195-207, issn 0021-8812Conference Paper

Universal extraction/clean-up procedure for screening of pesticides by extraction with ethyl acetate and size exclusion chromatographyROOS, A. H; VAN MUNSTEREN, A. J; NAB, F. M et al.Analytica chimica acta. 1987, Vol 196, pp 95-102, issn 0003-2670Conference Paper

Quantitative determination of specified chlorobiphenyls in fish with capillary glas chromatography and its use for monitoring and tolerance purposesTUINSTRA, L. G. M. T; DRIESSEN, J. J. M; KEUKENS, H. J et al.International journal of environmental analytical chemistry. 1983, Vol 14, Num 2, pp 147-157, issn 0306-7319Article

Application of 1D ¹H NMR for fast non-targeted screening and compositional analysis of steroid cocktails and veterinary drug formulations administered to livestockLOMMEN, A; SCHILT, R; WESEMAN, J et al.Journal of pharmaceutical and biomedical analysis. 2002, Vol 28, Num 1, pp 87-96, issn 0731-7085Article

Certification of an animal feed reference material for the organochlorine pesticide contents : BCR CRM 115TUINSTRA, L. G. M. T; ROOS, A. H; GRIEPINK, B et al.Fresenius' journal of analytical chemistry. 1997, Vol 357, Num 8, pp 1035-1041, issn 0937-0633Article

Sampling and analysis of the soil fumigants 1,3-dichloropropene and methyl isothiocyanate in the airVAN DEN BERG, F; LEISTRA, M; ROOS, A. H et al.Water, air and soil pollution. 1992, Vol 61, Num 3-4, pp 385-396, issn 0049-6979Article

Development of a multi-residue/multi-matrix method for pesticide analysis in agricultural productsTUINSTRA, L. G. M. T; ROOS, A. H; MATSER, A. M et al.Fresenius' journal of analytical chemistry. 1991, Vol 339, Num 6, pp 384-386, issn 0937-0633, 3 p.Conference Paper

Capillary gas chromatographic determination of some chlorobiphenyls in eel fat : interlaboratory study = Dosage, par chromatographie gazeuse en capillaire, de quelques chlorobiphényles dans la graisse d'anguille : étude interlaboratoiresTUINSTRA, L. G. M. T; ROOS, A. H; WERDMULLER, G. A et al.Journal - Association of official analytical chemists. 1985, Vol 68, Num 4, pp 756-759, issn 0004-5756Article

Interlaboratory studies of the determination of selected chlorobiphenyl congeners with capillary gas chromatography using splitless- and on-column injection techniquesTUINSTRA, L. G. M. T; ROOS, A. H; GRIEPINK, B et al.HRC & CC. Journal of high resolution chromatography & chromatography communications. 1985, Vol 8, Num 8, pp 475-480, issn 0344-7138Article

Possibilities for confirmatory analysis of some β-agonists using two different derivatives simultaneouslyVAN RHIJN, J. A; HESKAMP, H. H; ESSERS, M. L et al.Journal of chromatography. B, Biomedical applications. 1995, Vol 665, Num 2, pp 395-398Article

Liquid chromatographic determination of aflatoxin M₁ in milk powder using immunoaffinity columns for cleanup : interlaboratory studyTUINSTRA, L. G. M. T; ROOS, A. H; VAN TRIJP, J. M. P et al.Journal of AOAC International. 1993, Vol 76, Num 6, pp 1248-1254, issn 1060-3271Article

Multi-matrix-multi-pesticide method for agricultural productsTUINSTRA, L. G. M. T; POVEL, F. R; ROOS, A. H et al.Journal of chromatography. 1991, Vol 552, Num 1-2, pp 259-264, issn 0021-9673Conference Paper

Determination of soil fumigants in air using tandem capillary gas chromatography after charcoal trappingTUINSTRA, L. G. M. T; TRAAG, W. A; ROOS, A. H et al.HRC & CC. Journal of high resolution chromatography & chromatography communications. 1988, Vol 11, Num 1, pp 106-110, issn 0344-7138Conference Paper

The inorganic bromide content of Dutch raw milk = La teneur en bromure inorganique du lait cru néerlandaisTUINSTRA, L. G. M. T; ROOS, A. H; VAN MAZIJK, R. J et al.Milchwissenschaft. 1984, Vol 39, Num 1, pp 27-28, issn 0026-3788Article

Measured and computed concentrations of 1,3-dichloropropene and methyl isothiocyanate in air in a region with intensive use of soil fumigantsVAN DEN BERG, F; ROOS, A. H; TUINSTRA, L. G. M. T et al.Water, air and soil pollution. 1994, Vol 78, Num 3-4, pp 247-264, issn 0049-6979Article

Intercomparison study on milk powder fortified with PCDD and PCDFSCHIMMEL, H; GRIEPINK, B; MAIER, E. A et al.Fresenius' journal of analytical chemistry. 1994, Vol 348, Num 1-2, pp 37-46, issn 0937-0633Conference Paper

Determination of planar chlorobiphenyls in animal fatTUINSTRA, L. G. M. T; VAN RHIJN, J. A; ROOS, A. H et al.HRC. Journal of high resolution chromatography. 1990, Vol 13, Num 12, pp 797-802, issn 0935-6304Article

Comparison of the results for the analysis of individual chrlorobiphenyl congeners in various interlaboratory exercisesTUINSTRA, L. G. M. T; ROOS, A. H; WELLS, D. E et al.Mikrochimica acta (1966. Print). 1989, Vol 1, Num 1-2, pp 1-7, issn 0026-3672Article

The excretion of inorganic bromide into milk of dairy cows after oral administration = Excrétion, après administration orale, de bromure inorganique dans le lait de vaches laitièresVREMAN, K; ROOS, A. H; TUINSTRA, L. G. M. T et al.Netherlands milk and dairy journal. 1985, Vol 39, Num 3, pp 173-181Article