Monitoring of pesticide residues and their metabolites in surface and underground waters of Imathia (N. Greece) by means of solid-phase extraction disks and gas chromatography

Albanis, T. A.; Hela, Dimitra; Sakellarides, T. M.; Konstantinou, Ioannis

doi:10.1016/s0021-9673(98)00304-5

Cited by 216 publications

(104 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The structure of the thiophosphoric moiety of this ion, reported also in a previous study [27], could be well defined using MS 3 for product ions of m/z 141 and m/z 95 (Scheme 1). The ion of m/z 169 provided strong evidence for the presence of the thiophosphoric moiety of diazinon in the organic intermediate structures.…”

Section: Gc/mssupporting

confidence: 56%

“…The primary environmental concerns associated with its use are bird kills, contamination of surface water, and impacts on aquatic species. Diazinon and its metabolites have been encountered during monitoring studies in various aquatic systems all over the world [1][2][3]. Additionally, high diazinon residues have been found in urban waterways and effluents from sewage treatment plants [4,5].…”

Section: Iazinon [Oo-diethyl O-(2-mentioning

confidence: 99%

See 1 more Smart Citation

Identification of photocatalytic degradation products of diazinon in TiO₂aqueous suspensions using GC/MS/MS and LC/MS with quadrupole time-of-flight mass spectrometry

Kouloumbos¹,

Tsipi²,

Hiskia

et al. 2003

J. Am. Soc. Mass Spectrom.

131

View full text Add to dashboard Cite

The photocatalytic degradation of the organophosphorus insecticide diazinon in aqueous suspensions has been studied by using titanium dioxide as a photocatalyst. The degradation of the insecticide was a fast process and included the formation of several intermediates that were identified using GC/ion-trap mass spectrometry with EI or CI in positive and negative ionization mode and HPLC/electrospray-QqTOF mass spectrometry. Since primarily hydroxy derivatives were identified in these aqueous suspensions, the mechanism of degradation was probably based on hydroxyl radical attack. The initial oxidative pathways of the degradation of diazinon involved the substitution of sulfur by oxygen on the P¢S bond, cleavage of the pyrimidine ester bond, and oxidation of the isopropyl group. Exact mass measurements of the derivatives allowed the elemental formula of the molecules to be determined confidently. Similarities to the metabolic pathways occurring in living organisms were observed. (J Am Soc Mass Spectrom 2003, 14, 803-817)

show abstract

Section: Gc/mssupporting

confidence: 56%

Section: Iazinon [Oo-diethyl O-(2-mentioning

confidence: 99%

Identification of photocatalytic degradation products of diazinon in TiO₂aqueous suspensions using GC/MS/MS and LC/MS with quadrupole time-of-flight mass spectrometry

Kouloumbos¹,

Tsipi²,

Hiskia

et al. 2003

J. Am. Soc. Mass Spectrom.

131

View full text Add to dashboard Cite

show abstract

“…Many authors consider that environmental monitoring programs, implemented through well-designed field studies, are good procedures for evaluating and minimizing groundwater pollution (Cohen et al 1995;Albanis et al 1998;Azevedo et al 2000;Filizola et al, 2002). These studies can be conducted by direct analysis of water and/or soil, since the potential for groundwater contamination by pesticides depends on their mobility in the soil.…”

Section: Introductionmentioning

confidence: 99%

Leaching of Picloram in ultisol under different rainfall volumes

Assis¹,

Silva

D'Antonino

et al. 2011

Planta daninha

View full text Add to dashboard Cite

-The present study aimed to evaluate the leaching potential of Picloram in Ultisol columns under different rainfall amounts. For such, 30 treatments were evaluated (one soil associated with three levels of rainfall and ten depths).The experiments were arranged in a split-plot design, in a completely randomized design, with four replications. PVC columns of 10 cm in diameter and 50 cm in length were filled with these soils, moistened, and placed upright for 48 hours to drain the excess water. The herbicide was applied and rainfall simulations were carried out at specified intensities, according to the treatments, to force Picloram leaching. After 72 hours, all the columns were arranged in a horizontal position and opened lengthwise. Then, soil sampling was carried out every 5 cm of depth for subsequent herbicide extraction and quantification and analysis by high performance liquid chromatography. The remaining soil samples were placed in plastic pots, and, at the respective depths, the indicator species Cucumis sativus was sown. Twenty-one days after the emergence (DAE) of the indicator plants, evaluations were conducted to verify the symptoms of toxicity caused by Picloram in the plants. It was concluded that Picloram leaching is directly dependent on the volume of rain applied. The herbicide reached the deepest regions in the soil with the highest intensity of rain. The results obtained by bioassay were in agreement with those found by liquid chromatography.Keywords: herbicide, environmental impact, bioassay.RESUMO -Objetivou-se com este trabalho avaliar o potencial de lixiviação do Picloram em colunas preenchidas com Argissolo Vermelho-Amarelo, submetidas a diferentes volumes de chuva. Para isso, foram avaliados 30 tratamentos (um solo associado a três intensidades de chuva e dez profundidades). Utilizou-se o esquema de parcela subdividida em delineamento inteiramente casualizado, com quatro repetições. A montagem do experimento consistiu em preencher com amostras do solo colunas de PVC de 10 cm de diâmetro por 50 cm de comprimento, preparadas para estudos de lixiviação de herbicidas. Essas colunas foram preenchidas com os solos, umedecidas e colocadas na posição vertical por 48 horas para drenagem do excesso de água, aplicando a seguir o herbicida e as chuvas simuladas no topo destas, em intensidades especificadas de acordo com o tratamento, para forçar a lixiviação do Picloram. Setenta e duas horas após a simulação, todas as colunas foram dispostas na posição horizontal e abertas longitudinalmente, realizando-se amostragens de solo a cada intervalo de 5 cm de profundidade, para posterior extração e quantificação do herbicida e análise por cromatografia líquida de alta eficiência. O restante das amostras de solo de cada intervalo foi colocado em potes plásticos, e, nas respectivas profundidades, semeou-se a espécie indicadora Cucumis sativus. Aos 21 dias após a emergência (DAE) das plantas indicadoras foram realizadas avaliações dos sintomas de intoxicação provocados pelo Picloram. Concluiu-se que o ...

show abstract

“…These materials show some superior characteristics over conventional SPE materials, such as alkyl-bonded silica. Functionalized polymeric sorbents, 11,12 highly cross-linked polymers, [13][14][15] graphited carbon black [16][17][18] and molecular imprinted polymers (MIPs) [19][20][21] are examples of such materials that can offer high efficiency and good recoveries in extracting polar compounds.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of β-Cyclodextrin Bonded Silica as a Selective Sorbent for the Solid-Phase Extraction of 4-Nitrophenol and 2,4-Dinitrophenol

Feng

et al. 2003

ANAL. SCI.

View full text Add to dashboard Cite

A β-cyclodextrin bonded silica was synthesized by using a convenient method, and was evaluated as a selective sorbent for the solid-phase extraction of 4-nitrophenol and 2,4-dinitrophenol. When double-distilled water was used as the sample matrix, the sorbent showed a strong capacity to adsorb 4-nitrophenol and 2,4-dinitrophenol; the recoveries were found to be 96% and 99%, respectively, with a 1 L water sample. The selectivity of the sorbent was investigated by using a washing step with methanol. Most of the phenols were washed out with 5 mL of methanol, while 4-nitrophenol and 2,4-dinitrophenol still gave recoveries of 94% and 90%. The solution for efficiently eluting the analytes was optimized and the effect of the inorganic salt on the extraction was examined. In order to investigate the potentiality of the sorbent in dealing with real water samples, water from Donghu lake (Wuhan, China) spiked with nine phenolic compounds at microgram per liter levels were preconcentrated on this cartridge.

show abstract

Monitoring of pesticide residues and their metabolites in surface and underground waters of Imathia (N. Greece) by means of solid-phase extraction disks and gas chromatography

Cited by 216 publications

References 31 publications

Identification of photocatalytic degradation products of diazinon in TiO₂aqueous suspensions using GC/MS/MS and LC/MS with quadrupole time-of-flight mass spectrometry

Identification of photocatalytic degradation products of diazinon in TiO₂aqueous suspensions using GC/MS/MS and LC/MS with quadrupole time-of-flight mass spectrometry

Leaching of Picloram in ultisol under different rainfall volumes

Evaluation of β-Cyclodextrin Bonded Silica as a Selective Sorbent for the Solid-Phase Extraction of 4-Nitrophenol and 2,4-Dinitrophenol

Contact Info

Product

Resources

About

Monitoring of pesticide residues and their metabolites in surface and underground waters of Imathia (N. Greece) by means of solid-phase extraction disks and gas chromatography

Cited by 216 publications

References 31 publications

Identification of photocatalytic degradation products of diazinon in TiO2aqueous suspensions using GC/MS/MS and LC/MS with quadrupole time-of-flight mass spectrometry

Identification of photocatalytic degradation products of diazinon in TiO2aqueous suspensions using GC/MS/MS and LC/MS with quadrupole time-of-flight mass spectrometry

Leaching of Picloram in ultisol under different rainfall volumes

Evaluation of β-Cyclodextrin Bonded Silica as a Selective Sorbent for the Solid-Phase Extraction of 4-Nitrophenol and 2,4-Dinitrophenol

Contact Info

Product

Resources

About

Identification of photocatalytic degradation products of diazinon in TiO₂aqueous suspensions using GC/MS/MS and LC/MS with quadrupole time-of-flight mass spectrometry

Identification of photocatalytic degradation products of diazinon in TiO₂aqueous suspensions using GC/MS/MS and LC/MS with quadrupole time-of-flight mass spectrometry