M. Gamón

Generalitat Valenciana

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E. Lorenzo

Universidad Nacional Autónoma de México

Diego Gómez de Barreda

Universitat Politècnica de València

R. Coscollá

Generalitat Valenciana

Rosa Pelegrı́

Generalitat Valenciana

E. Andreu‐Moliner

Universitat de València

E. Sancho

Universitat de València

M.D. Ferrando

Universitat de València

José García de la Cuadra

Servicio Regional de Investigación y Desarrollo Agroalimentario

Rafael Boluda

Universitat de València

A. Saez

Universitat de València

Cooperative Institutions

Universitat de València

Generalitat Valenciana

University of Almería

Universitat Politècnica de València

Consejo Superior de Investigaciones Científicas

European Union

Instituto Valenciano de Investigaciones Agrarias

Universitat de Barcelona

Centre National de la Recherche Scientifique

Parc Científic de la Universitat de València

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[Studies on pesticides dissipation curves in citrus trees]. 2. ed. [Spanish]

R. Coscollá Victor Manuel Beltran Francisco J. Domínguez Romero V. Badia Ariel Tarazona

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Mobility and efficacy of abamectin and imidacloprid againstRhynchophorus ferrugineusinPhoenix canariensisby different application methods

Pest Management Science (2014)

Óscar Dembilio Josep M. Riba M. Gamón Josep A. Jacas

Rhynchophorus ferrugineus is the most destructive pest of palms. As detection of early infestation stages is difficult, preventive measures, mostly chemical control, are crucial. Stipe injection of insecticides has developed rapidly as a suitable technique. However, pesticide movement within palms and palm reaction to wounding remain controversial. We used abamectin and imidacloprid applied by crown spray, stipe and frond injections to disentangle how these pesticides move within P. canariensis and how tissues wounded by injection heal. Furthermore, we established their lethal doses to larvae of R. ferrugineus.Maximum residues of imidacloprid (0.1 mg kg(-1) ) were detected in crown and frond samples for up to 2 months after stipe injection, whereas maximum residues of abamectin were found in frond tip samples (0.5 mg active substance kg(-1) ) 5 months after stipe injection. Based on the lethal concentrations calculated, these doses could satisfactorily protect palms for up to 3 months after treatment. No significant wound damage was observed 2 years after injection.Stipe injection, irrespective of the active substance considered, resulted in better distribution and higher persistence compared with frond injection and, especially, crown spray. As a consequence, our results point to stipe injection as a good alternative to control R. ferrugineus.

Stipe (mycology)

Frond

Abamectin

10.1002/ps.3889

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Citations (34)

Analysis of pharmaceutical biodegradation of WWTP sludge using composting and identification of certain microorganisms involved in the process

The Science of The Total Environment (2018)

Marı́a Iranzo M. Gamón Rafael Boluda Salvador Mormeneo

Sewage sludge

10.1016/j.scitotenv.2018.05.366

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Citations (50)

Pesticide Residues in Potato Homogenate

Amadeo R. Fernández‐Alba Milagros Mezcúa Stewart L. Reynolds Antonio Valverde Michelangelo Anastassiades

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Dissipation of methidathion and azinphos-methyl residues in citrus fruit grown in Valencia. Spain.

Revista de Agroquimica y Tecnologia de Alimentos (1989)

Rosa Pelegrı́M. Gamón R. Coscollá E. Monteagudo Victoria Beltrán

Valencia

Citrus × sinensis

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UV detection of triazine herbicides and their hydroxylated and dealkylated degradation products in well water

Journal of Chromatography A (1996)

A. Saez Diego Gómez de Barreda M. Gamón José García de la Cuadra E. Lorenzo

Triazine

Degradation

Simazine

Cartridge

10.1016/0021-9673(95)00473-4

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Citations (19)

Acute toxicity, uptake and clearance of diazinon by the European EEL, Anguilla anguilla (L.)

Journal of Environmental Science and Health Part B (1992)

E. Sancho MD. Ferrando E. Andreu M. Gamón

Abstract The toxicity, accumulation, and elimination of diazinon were investigated for the european eel, Anguilla anguilla. The 24, 48, 72 and 96‐h median lethal concentrations (LC50) were 0.16, 0.11, 0.09 and 0.08 mg/L, respectively. Fish exposed to sublethal concentration (0.042 mg/L) accumulated diazinon in liver and muscle tissues. Bioconcentration factors (BCF) of diazinon were 1850 in liver, and 775 in muscle over the 96‐h exposure period. Upon removal from diazinon containing water the contaminated fish rapidly eliminated diazinon. The excretion rate constants of this insecticide were 0.108 h‐1 for liver and 0.016 h‐1 for muscle. Diazinon half‐lives were 16.6 and 33.2 hours for liver and muscle, respectively.

Bioconcentration

10.1080/03601239209372775

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Citations (15)

Comparative Study of the Main Top-down Approaches for the Estimation of Measurement Uncertainty in Multiresidue Analysis of Pesticides in Fruits and Vegetables

Journal of Agricultural and Food Chemistry (2010)

Paula Medina‐Pastor Antonio Valverde Tuija Pihlström Sonja Masselter M. Gamón

Practical "top-down" approaches appear to be the most suitable for the evaluation of measurement uncertainty in pesticide residue testing laboratories, where analytical procedures are routinely applied to a large number of pesticide/food combinations. The opposite approach, "bottom-up" evaluation of measurement uncertainty, leads to great difficulties in evaluating all of the pesticides in a consistent way. Among the top-down approaches, there are two main ways in which measurement uncertainty can be estimated: One is based on default values, which are based on previous extensive interlaboratory experience and the proven accuracy of the laboratory; these include the Horwitz equation or the fit-for-purpose relative standard deviation (FFP-RSD). The other is based on experimental data from the quality control work of the laboratory: within-laboratory reproducibility, interlaboratory validation, or a combination of results obtained in proficiency tests. The principal existing guidelines from various bodies (Eurachem, Nordtest, and Eurolab) all propose different approaches for calculating measurement uncertainty. In this paper, the main top-down approaches are evaluated and compared using the data from the European Proficiency Test Database for Fruits and Vegetables and the Multiresidue Method validation databases obtained from the National Reference and Official Laboratories in Europe. The main conclusion of the comparative study is that a default expanded measurement uncertainty value of 50% could satisfy all of the requirements for facilitating and harmonizing, worldwide, the intercomparability of the pesticide residue confidence results between laboratories.

10.1021/jf104060h

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Citations (51)

Validation of a Monoclonal Enzyme Immunoassay for the Determination of Carbofuran in Fruits and Vegetables

Journal of Agricultural and Food Chemistry (2001)

María‐José Moreno Antonio Abad‐Fuentes Rosa Pelegrı́María-Isabel Martínez Adolfo Sáez

The N-methylcarbamate pesticide carbofuran is a very important insecticide used worldwide. In the present work, the validation of a monoclonal antibody-based enzyme immunoassay (ELISA) to determine this compound in fruits and vegetables is described. The immunoassay is a competitive heterologous ELISA in the antibody-coated format, with an I50 value for standards in buffer of 740 ng/L and with a dynamic range between 200 and 3100 ng/L. For recovery studies, peppers, cucumbers, strawberries, tomatoes, potatoes, oranges, and apples were spiked with carbofuran at 10, 50, and 200 ppb. After liquid extraction, analyses were performed by ELISA on extracts purified on solid-phase extraction (SPE) columns and crude, nonpurified extracts. Depending on the crop, mean recoveries in the 43.9−90.7% range were obtained for purified samples and in the 90.1−121.6% range for crude extracts. The carbofuran immunoassay performance was further validated with respect to high-performance liquid chromatography (HPLC) with postcolumn derivatization and fluorescence detection (EPA Method 531.1). Samples were spiked with carbofuran at several concentrations and analyzed as blind samples by ELISA and HPLC after SPE cleanup. The correlation between methods was very good (y = 0.90x + 2.66, r2 = 0.958, n = 25), with HPLC being more precise than ELISA (mean coefficients of variation of 4.1 and 11.5%, respectively). The immunoassay was then applied to the analysis of nonpurified extracts of the same samples. Results also compared very well with those obtained by HPLC on purified samples (y = 1.02x + 10.44, r2 = 0.933, n = 29). Therefore, the developed immunoassay is a suitable method for the quantitative and reliable determination of carbofuran in fruits and vegetables even without sample cleanup, which saves time and money and considerably increases the sample throughput. Keywords: Immunoassay; ELISA; pesticide; N-methylcarbamates; HPLC; analysis; validation

Carbofuran

10.1021/jf001171q

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Citations (28)

Acute toxicity of pentachlorophenol (PCP) on goldfish(Carassius auratus)under laboratory conditions

Toxicological & Environmental Chemistry Reviews (1991)

A. Fernández‐Casalderrey E. Andreu‐Moliner C. Cebrián M. D. Ferrando M. Gamón

The U.S. Environmental Protection Agency (E.P.A.) recognized PCP as an environmental pollutant in need of control. Temperature and hardness were two controlling factors in PCP toxicity to fish. Information on acute toxicity may provide the upper bounderies of dose‐response relationships. Adult goldfish (Carassius auratus) were used to determine acute toxicity to 24, 48, 72 and 96 h LC50 for PCP. Natural degradation and persistence of PCP in experimental water was also determined at pH 8.4 and two temperatures (22 and 29 °C).

Pentachlorophenol

Carassius auratus

Persistence (discontinuity)

10.1080/02772249109357713

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Citations (0)