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Journal - Association of Official Analytical Chemists|July 1, 1977
Evaluation of electrolytic conductivity detection for gas-liquid chromatographic screening of some organonitrogen herbicides and fungicides in foodsJ F Lawrence, H A McLeodInternational Journal of Environmental Analytical Chemistry|January 1, 1986
Determination of nanogram/kilogram levels of polycyclic aromatic hydrocarbons in foods by HPLC with fluorescence detectionJ F Lawrence, B S DasJournal - Association of Official Analytical Chemists|May 1, 1976
Gas-liquid chromatographic analysis and chemical confirmation of azodrin (monocrotophos) residues in strawberriesJ F Lawrence, H A McLeodJournal - Association of Official Analytical Chemists|November 1, 1980
Comparison of gas and liquid chromatography for determination of anilazine in potatoes and tomatoesJ F Lawrence, L G PanopioJournal of Chromatography. A|May 3, 1996
High-performance liquid chromatographic separation of carminic acid, alpha- and beta-bixin, and alpha- and beta-norbixin, and the determination of carminic acid in foodsF E Lancaster, J F LawrenceInternational Journal of Environmental Analytical Chemistry|January 1, 1983
The determination of formaldehyde in beer and soft drinks by HPLC of the 2,4-dinitrophenylhydrazone derivativeJ F Lawrence, J R IyengarJournal - Association of Official Analytical Chemists|September 1, 1988
Determination of sulfite in foods by headspace liquid chromatographyJ F Lawrence, R K ChadhaJournal - Association of Official Analytical Chemists|September 1, 1988
Determination of seven artificial sweeteners in diet food preparations by reverse-phase liquid chromatography with absorbance detectionJ F Lawrence, C F CharbonneauJournal of Chromatography|May 11, 1977
Comparison of electron-capture and electrolytic conductivity detection for the gas-liquid chromatographic analysis of some perfluoro derivatives of four agricultural chemicalsJ J Ryan, J F LawrenceFood Additives and Contaminants|February 7, 2001
Determination of benzidine in the food colours tartrazine and sunset yellow FCF, by reduction and derivatization followed by high-performance liquid chromatographyF E Lancaster, J F LawrencePageof 7