Determination of multiclass pesticides in food commodities by pressurized liquid extraction using GC–MS/MS and LC–MS/MS

Frenich, Antonia Garrido; Salvador, I. Martínez; Vidal, José Luis Martı́nez; López-López, T

doi:10.1007/s00216-005-0139-x

Cited by 68 publications

(25 citation statements)

References 20 publications

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“…The results of this study could be explained by the hypothesis that molecules are degraded by solar radiation. It is also notable that insecticides of the pyrethroid chemical group have low absorption and translocation rates in plants (Garrido, Martínez, Martínez, & López-López, 2005).…”

Section: Acta Scientiarum Agronomymentioning

confidence: 99%

<b>Fungicide and insecticide residues in rice grains

et al. 2017

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ABSTRACT. The objective of this study was to analyse residues of fungicides and insecticides in rice grains that were subjected to different forms of processing. Field work was conducted during three crop seasons, and fungicides and insecticides were applied at different crop growth stages on the aerial portion of the rice plants. Azoxystrobin, difenoconazole, propiconazole, tebuconazole, and trifloxystrobin fungicides were sprayed only once at the R2 growth stage or twice at the R2 and R4 growth stages; cypermethrin, lambda-cyhalothrin, permethrin, and thiamethoxam insecticides were sprayed at the R2 growth stage; and permethrin was sprayed at 5-day intervals from the R4 growth stage up to one day prior to harvest. Pesticide residues were analysed in uncooked, cooked, parboiled, polished and brown rice grains as well as rice hulls during the three crop seasons, for a total of 1,458 samples. The samples were analysed by gas chromatography with electron capture detection (GC-ECD) using modified QuEChERS as the extraction method. No fungicide or insecticide residues were detected in rice grain samples; however, azoxystrobin and cypermethrin residues were detected in rice hull samples.Keywords: Oryza sativa L., food, gas chromatography, pesticides, grains quality. Resíduos de fungicidas e inseticidas em grãos de arrozRESUMO. O estudo objetivou analisar resíduos de fungicidas e inseticidas nos grãos de arroz submetidos a diferentes formas de processamento. O trabalho foi realizado no campo durante três safras agrícolas com a aplicação de fungicidas e inseticidas sobre a parte aérea das plantas de arroz. Foi realizado um tratamento com a aplicação dos fungicidas azoxystrobin, difenoconazole, propiconazole, tebuconazole, trifloxystrobin no estádio de desenvolvimento R2, e outro tratamento com os mesmos fungicidas com duas aplicações nos estádios R2 e R4 em parcelas individuais. Um tratamento com inseticida consistiu na aplicação de cypermethrin, lambda-cyhalothrin, permethrin, thiamethoxam no estádio R2, e outro tratamento na aplicação de permethrin com intervalo de cinco dias entre as aplicações a partir do estádio de desenvolvimento R4 até um dia antes da colheita. Foram analisados resíduos de fungicida e inseticida nos grãos polidos e integral, cru, cozido e parboilizado, e na casca de arroz, totalizando 1.458 amostras. As amostras foram analisadas por cromatografia em fase gasosa com detecção por captura de elétrons (GC-ECD) usando QuEChERS modificados como método de extração. Resíduos de fungicidas e inseticidas não foram detectados nos grãos de arroz. No entanto, resíduos de azoxystrobin e cypermethrin foram detectados na casca de arroz.

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Section: Acta Scientiarum Agronomymentioning

confidence: 99%

<b>Fungicide and insecticide residues in rice grains

et al. 2017

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“…This technology can remove some fatty compounds and separate target components by adding solid-phase sorbents into the extraction pool, so it can achieve extraction and meanwhile purification. However, the equipment costs too much (Garrido Frenich et al, 2005).…”

Section: Samples Extractionmentioning

confidence: 99%

A review of polychlorinated biphenyls (PCBs) pollution in indoor air environment

Dai

Xia

Weng

2016

Journal of the Air & Waste Management Association

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Polychlorinated biphenyls (PCBs) were widely used in industrial production due to the unique physical and chemical properties. As a kind of persistent organic pollutants, the PCBs would lead to environment pollution and cause serious problems for human health. Thus, they have been banned since the 1980s due to the environment pollution in the past years. Indoor air is the most direct and important environment medium to human beings; thus, the PCBs pollution research in indoor air is important for the protection of human health. This paper introduces the industrial application and potential harm of PCBs, summarizes the sampling, extracting, and analytical methods of environment monitoring, and compares the indoor air levels of urban areas with those of industrial areas in different countries according to various reports. This paper can provide a basic summary for PCBs pollution control in the indoor air environment.

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“…ASE was also used for determination of 28 pesticides in pear, potato and cabbage (Adou et al, 2001). In subsequent studies, this list was expanded to 74 pesticides extracted from cucumber, lettuce and tomato (Garrido Frenich et al, 2005), and up to 130 pesticides extracted from oranges, nectarines and spinach (Cervera et al, 2010). A group of authors managed to extract 29 carbamates from dried fruits (raisin, prune and mango), spices (turmeric, masala, sage, thyme and red pepper) and from soybean paste and soy sauce (Terada et al, 2008), while Gilbert-López et al (2009) indicated ASE application for pesticide from fatty vegetable matrices.…”

Section: Accelerated Solvent Extraction (Ase)mentioning

confidence: 99%