Detection of procymidone in wine and grapes by a magnetic particle‐based enzyme immunoassay

Comparison of Two Recent Solventless Methods for the Determination of Procymidone Residues in Wines: SPME/GC/MS and ELISA Tests

“…Estimated concentrations by both methods were found very close to each other for spiked samples of two particular wines of the Bergerac area (France). This result can be reasonably extended to most wine types since the ELISA method has been largely validated for more than 50 different wines coming from all over the world (Lawruck et al, 1994) and the SPME method relative to other pesticide molecules for more than 20 other wines (Boyd-Boland and Pawliszyn, 1995), showing that corresponding efficiencies are not wine dependent as soon as, in the case of SPME, their alcoholic concentrations are of the same order (Urruty and Montury, 1996).…”

“…As described by Lawruck et al (1994) and the supplier, responses for the ELISA were found linear in the range 2-100 ppb for the three matrices (Table 1). At the level of 1 µg/L in white wine, procymidone was detected but the mean value observed was far from the corresponding regression line.…”

Development of a Magnetic Particle-Based Enzyme Immunoassay for the Quantitation of Chlorpyrifos in Water

“…Magnetic particle-based immunoassays have previously been described and applied to the detection of pesticide residues in water (Lawruk et al, 1992;Gruess-ner et al, 1995), soil (Lawruk et al, 1993(Lawruk et al, , 1996, crops (Yeung and Newsome, 1995;Lawruk et al, 1995;Selisker et al, 1995), fruit and fruit juice (Itak et al, 1993(Itak et al, , 1994, wine (Lawruk et al, 1994), and meats (Nam and King, 1994). Other previously described immunoassays for chlorpyrifos (Manclu ´s et al, 1994;Hill et al, 1994) utilized antibody passively adsorbed to polystyrene plates or tubes which adversely affects assay sensitivity and precision (Howell et al, 1981).…”

Determination of Pentachlorophenol in Water and Soil by a Magnetic Particle-Based Enzyme Immunoassay

“…Magnetic particle-based immunoassays have been developed and applied to the detection of pesticide residues (13)(14)(15)(16)(17)(18)(19)(20)(21)(22). These immunoassays eliminate imprecision problems that are associated with coated beads, plates, and tubes through the covalent coupling of antibody to a superparamagnetic particle solid phase (23).…”