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International Journal of Environmental Analytical Chemistry|January 1, 1986
Handling of environmental and biological samples via pre-column technologiesR W Frei, M W Nielen, U A BrinkmanJournal of Chromatography|February 21, 1986
Comparison of electrochemical detection methods in liquid chromatography for the determination of N-acetylcysteine in plasmaW T Kok, J J Halvax, R W FreiJournal of Chromatography|January 28, 1983
Amperometric detection of amino acids in high-performance liquid chromatography with a copper electrodeW T Kok, U A Brinkman, R W FreiJournal of Chromatography|August 4, 1976
Gas chromatographic analysis of heptafluorobutyryl derivatives of some carbamate insecticidesJ F LawrenceJournal - Association of Official Analytical Chemists|January 1, 1987
Determination of sodium dioctylsulfosuccinate in dry beverage bases by liquid chromatography with post-column ion-pair extraction and absorbance detectionJ F LawrenceJournal - Association of Official Analytical Chemists|September 1, 1976
Evaluation and confirmation of an alkylation-gas-liquid chromatographic method for the determination of carbamate and urea herbicides in foodsJ F LawrenceCanada Diseases Weekly Report = Rapport Hebdomadaire Des Maladies Au Canada|September 1, 1990
Determination of domoic acid in seafoods and in biological tissues and fluidsJ F LawrenceJournal of Chromatographic Science|December 1, 1976
A comparison of electron-capture GLC, electrolytic-conductivity GLC and UV-absorption HPLC for the analysis of some herbicides in foodsJ F LawrenceJournal of Chromatographic Science|October 1, 1987
Recent developments in derivatization for the chromatographic determination of food additivesJ F LawrenceJournal - Association of Official Analytical Chemists|September 1, 1976
High-pressure liquid chromatographic analysis of urea herbicides in foodsJ F LawrencePageof 13