Determination of corn herbicides by GC-MS and GC-NPD in environmental samples

Sánchez‐Brunete, Consuelo; Martínez, L.; Tadeo, José L.

doi:10.1021/jf00046a025

Cited by 46 publications

(14 citation statements)

References 11 publications

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“…Anti-atrazine polyclonal serum R10 was obtained from female New Zealand white rabbit immunised with hapten 2d N-(4-Chloro-6-isopropylamino- [1,3,5]triazin-2-yl)-6-aminohexanoic acid) attached covalently to KLH. The serum as freeze-dried powder containing 0.02% NaN 3 and 2d hapten (used for enzymatic hapten conjugate preparation), were kindly provided and characterised by Gasco´n et al ½2 .…”

Section: Immunoreagentsmentioning

confidence: 99%

Determination of Atrazine in Vegetable Samples Using a Dipstick Immunoassay Format

Gabaldón

Maquieira

Puchades

2002

International Journal of Environmental Analytical Chemistry

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Section: Immunoreagentsmentioning

confidence: 99%

Determination of Atrazine in Vegetable Samples Using a Dipstick Immunoassay Format

Gabaldón

Maquieira

Puchades

2002

International Journal of Environmental Analytical Chemistry

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“…Chromatographic methods are the most suitable for residue analysis [3][4][5][6] in GC using long, narrow-bore capillary columns equipped with selective and sensitive detection methods such as electrophilic conductivity detector (ECD) [7,8], nitrogen-phosphorus detector (NPD) [9,10] and flame photometric detector (FPD) [11,12] according to different classes of pesticides. An emerging strategy in multiresidue methodology is the search for universal detection systems, e. g., in GC coupled with mass-selective detectors [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Monitoring of pesticide residues on cucumber, tomatoes and strawberries in Gaza Governorates, Palestine

Safi¹,

Abou-Foul

El‐Nahhal

et al. 2002

Nahrung

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Three techniques of gas chromatography (GC) either with flame photometric-detector (FPD), electron capture detector (ECD), or with mass-spectrometry (MS) were applied for identification and quantification of pesticide residues on 45 samples of cucumber, tomatoes, and strawberries in fifteen locations in Gaza Governorates. GC-FPD analysis showed the presence of four different organo-phosphorus (OP) pesticides, their levels were very low and below maximum residue limits (MRL's). GC-ECD detected ten different pesticides at levels below the MRL's. Using the GC-MS technique, alpha and beta-endosulfan, chlorpyrifos, carbofuran, chlorfluazuron, triadimenol I and II, penconazole, coptafolmetabolite, pyrimethanil and iprodione were detected and confirmed on some samples of cucumber, tomatoes and strawberries. All GC-MS pesticide residues detected on tomato were below the MRL's except chlorfluazuron while on strawberry were below the MRL's except penconazole, chlorfluazuron and pyrimethanil, but on cucumber were slightly higher than the MRL's except alpha and beta-endosulfan. Also, statistical analysis of pesticide residues in all samples showed that most of the detected residues mean were significantly lower than the MRL's (p < 0.05). Generally, tomatoes showed the least number and level of pesticide residues by all the GC-techniques. On the other hand, strawberries showed greater number and levels of pesticide residues, particularly by the GC-MS technique. These results indicate that the protective period to elapse before harvesting should be increased especially on strawberry. The results also can help in risk assessment of consumers exposure to the expected pesticide residues.

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“…Many countries have set maximal residue limits (MRL) of used pesticides and take strong measures to detect their residues in food community (Maybury 1989). GC is one of the most effective methods to determine OPPs residues (Barcelò 1993;Grosser et al 1993;Tekel and Kovacicova 1993;Sanchez-Brunete et al 1994). In the analysis of OPPs in fresh vegetables using GC, interference and contamination resulting from pigments and matrix were usually encountered.…”

mentioning

confidence: 99%

Analysis of Eight Organophosphorus Pesticide Residues in Fresh Vegetables Retailed in Agricultural Product Markets of Nanjing, China

Wang

Liang

Jiang

2008

Bull Environ Contam Toxicol

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A method to effectively remove pigments in fresh vegetables using activated carbon followed cleanup through solid phase extraction (SPE) cartridge to further reduce matrix interference and contamination, was established to determine eight organophosphorous pesticides (OPPs) by gas chromatography (GC) with nitrogen-phosphorus detection (NPD) in this study, and it has been successfully applied for the determination of eight OPPs in various fresh vegetables with the recoveries ranging from 61.8% to 107%. To evaluate eight OPPs residue level, some fresh vegetables retailed at three agricultural product markets (APM) of Nanjing in China were detected, the results showed that phorate in Shanghai green (0.0257 microg g(-1)) and Chinese cabbage (0.0398 microg g(-1)), dimethoate in Shanghai green (0.0466-0.0810 microg g(-1)), Chinese cabbage (0.077 microg g(-1)), and spinach (0.118-0.124 microg g(-1)), methyl-parathion in Shanghai green (0.0903 microg g(-1)), Chinese cabbage (0.157 microg g(-1)), and spinach (0.0924 microg g(-1)), malathion in Shanghai green (0.0342-0.0526 microg g(-1)), chorpyrifos in spinach (0.106-0.204 microg g(-1)), and Chinese cabbage (0.149 microg g(-1)), chlorfenvinfos in carrot (0.094-0.131 microg g(-1)), were found. However, fonofos and fenthion were not detected in all the collected vegetable samples.

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Determination of corn herbicides by GC-MS and GC-NPD in environmental samples

Cited by 46 publications

References 11 publications

Determination of Atrazine in Vegetable Samples Using a Dipstick Immunoassay Format

Determination of Atrazine in Vegetable Samples Using a Dipstick Immunoassay Format

Monitoring of pesticide residues on cucumber, tomatoes and strawberries in Gaza Governorates, Palestine

Analysis of Eight Organophosphorus Pesticide Residues in Fresh Vegetables Retailed in Agricultural Product Markets of Nanjing, China

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