Determination of oxamyl and methomyl by high-performance liquid chromatography using a single-stage postcolumn derivatization reaction and fluorescence detection

Stafford, Steven C.; Lin, Willy.

doi:10.1021/jf00018a022

Cited by 25 publications

(13 citation statements)

References 3 publications

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“…MSPD was first applied to extract and purify drug residues in animal tissue samples [14], and in recent years its application became popular in pesticide detection and has been introduced to multi-residual analysis [13][14][15][16][17][18][19][20][21] on pesticides in vegetal samples such as fruits, vegetables, fruit juices, etc.…”

Section: Introductionmentioning

confidence: 99%

Determination of 266 pesticide residues in apple juice by matrix solid-phase dispersion and gas chromatography–mass selective detection

Chu

Hui-yuan

2005

Journal of Chromatography A

117

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Section: Introductionmentioning

confidence: 99%

Determination of 266 pesticide residues in apple juice by matrix solid-phase dispersion and gas chromatography–mass selective detection

Chu

Hui-yuan

2005

Journal of Chromatography A

117

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“…This single-step technique has been applied to the analysis of 11 N-methylcarbamates (LOD ≈ 0.1 ng) [112], of oxamyl in potatoes [128] and of oxamyl and methomyl in crops and water samples (LOD = 1 ng) [129]. It appears more convenient than the two-step conventional technique, since sensitivity is increased, the hardware and cost are reduced and the daily procedure is simplified.…”

Section: Labelling With Orthophthalaldehyde/2-mercaptoethanol (Opa/2-me)mentioning

confidence: 99%

Luminescence methods in pesticide analysis. Applications to the environment

Aaron¹,

Coly²

2000

Analusis

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DossierLuminescence spectroscopy such as the need for pretreatment procedures in the case of weakly volatile and/or thermally labile pesticides (e.g., carbamates, phenylureas and sulfonylureas). The second most utilized method is HPLC, with UV-visible absorption detectors; it remains the technique of choice for screening work.The use of luminescence techniques (especially fluorescence) for organic pesticide residue analysis has been limited by the fact that, relatively few of these compounds are strongly luminescent. However, many compounds do possess the necessary degree of aromaticity and may be converted into luminescent species using a variety of methods. Hence, two distinct cases have to be considered. (i) If the pesticide under study is luminescent, then it can be determined directly; (ii) if the pesticide is non or weakly luminescent, it can be converted into a luminescent compound using various physicochemical means, including chemical and/or photochemical reactions.Derivatization reactions constitute an important aspect of pesticide luminescence analysis since many pesticides have one or more functional groups and can be converted into more stable derivatives to successfully ensure environmental analysis. The number of papers, especially reviews [8][9][10][11][12][13] and books [14][15][16][17], in which this subject is discussed, demonstrates this increase of the derivatization use.In this review, the most important publications concerning significant advances in the luminescence methodology, instrumentation and applications to environmental analysis of pesticides will be reported. We will describe the recent available literature on direct and indirect fluorimetric methods, photochemically-induced fluorescence, photosensitized fluorescence and phosphorimetric methods used for pesticide analysis. As it will be shown, recent instrumentation, including sophisticated electronics and precise optical systems, makes luminescence a highly sensitive and selective tool for pesticide residue detection. Fluorimetric methodsAn early work on the fluorescence of pesticides has been performed in stationary solutions, (i.e., batch procedure) by

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“…McGarvey 13 combined hydrolysis and chromophore formation in a singlestage PCR at 140°C. This technique has been applied to water and fruit samples and insect tissue 14 .…”

Section: Introductionmentioning

confidence: 99%

Peak dispersion and hydrolysis kinetics ofN‐methylcarbamates in packed‐bed and coiled capillary reactors

Falah

Hammers

1994

Toxicological & Environmental Chemistry

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The Chromatographic and kinetic performance of the hydrolysis of some N-methylcarbamates in (glass bead) packed-bed and coiled open capillary reactors is examined, using sodium hydroxide solutions in methanol + water mixtures at about 95°C. The efficiency of the hydrolysis to methylamine in these reactors is evaluated with kinetic in vitro data. Finally, the reaction dispersion in an RP-18/TBA-OH solid-phase reactor is described in terms of a simple model and the utility of this reactor for carbamate hydrolysis is briefly discussed.

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Determination of oxamyl and methomyl by high-performance liquid chromatography using a single-stage postcolumn derivatization reaction and fluorescence detection

Cited by 25 publications

References 3 publications

Determination of 266 pesticide residues in apple juice by matrix solid-phase dispersion and gas chromatography–mass selective detection

Determination of 266 pesticide residues in apple juice by matrix solid-phase dispersion and gas chromatography–mass selective detection

Luminescence methods in pesticide analysis. Applications to the environment

Peak dispersion and hydrolysis kinetics ofN‐methylcarbamates in packed‐bed and coiled capillary reactors

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