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Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes

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https://www.readbyqxmd.com/read/27820683/fate-of-the-14-c-labeled-herbicide-prosulfocarb-in-a-soil-and-in-a-sediment-water-system
#1
Karsten E Braun, Ann-Katrin Luks, Burkhard Schmidt
The fate of (14)C-labeled herbicide prosulfocarb was studied in an agricultural soil and in a sediment-water system, the sediment part of which was derived from Yangtze Three Gorges Reservoir, China. Time-course studies were performed for 28 d and 49 d, respectively. Main transformation routes of (14)C-prosulfocarb were mineralization to (14)CO2 and formation of nonextractable residues amounting to 12.13% and 10.43%, respectively, after 28 days (soil), and 9.40% and 11.98%, respectively, after 49 d (sediment-water system)...
November 7, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27820679/malathion-dermal-permeability-in-relation-to-dermal-load-assessment-by-physiologically-based-pharmacokinetic-modeling-of-in-vivo-human-data
#2
Kenneth T Bogen, Ankur Singhal
Estimates of dermal permeability (Kp), obtained by fitting an updated human PBPK model for malathion to previously reported data on excreted urinary metabolites after 29 volunteers were dermally exposed to measured values of [(14)C]malathion dermal load (L), were used to examine the empirical relationship between Kp and L. The PBPK model was adapted from previously reported human biokinetic and PBPK models for malathion, fit to previously reported urinary excretion data after oral [(14)C]malathion intake by volunteers, and then augmented to incorporate a standard Kp approach to modeling dermal-uptake kinetics...
November 7, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27820678/isolation-and-characteristics-of-sulfentrazone-degrading-bacteria
#3
Christiane A D Melo, André M Massenssini, Ana Beatriz R J Passos, Felipe P Carvalho, Lino R Ferreira, Antonio Alberto Silva, Maurício D Costa
This study aimed to isolate and characterize bacteria able to use sulfentrazone in the commercial formulation as their sole carbon source. The isolation of the potential sulfentrazone-degrading bacteria was made from soil samples with a recent history of herbicide application and from isolates identified through rDNA sequencing. Subsequently, we assessed the growth of the isolates and their sulfentrazone degradation ability using high-performance liquid chromatography. Twenty-six potential sulfentrazone-degrading bacterial isolates were obtained in pure culture...
November 7, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27820667/dissipation-of-difenoconazole-in-apples-used-for-production-of-baby-food
#4
Ewa Szpyrka, Stanisław Walorczyk
Dissipation of fungicide difenoconazole (3-chloro-4-[(2RS,4RS;2RS,4SR)-4-methyl-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-2-yl]phenyl 4-chlorophenyl ether) was studied following its application on apples intended for production of baby food. The apples (varieties: Jonagold Decosta, Gala and Idared) were sprayed with the formulation to control pathogens causing fungal diseases: powdery mildew (Podosphaera leucotricha ELL et Ev./Salm.) and apple scab (Venturia inaequalis Cooke/Aderh.). A validated gas chromatography-based method with simultaneous electron capture and nitrogen phosphorus detection (GC-ECD/NPD) was used for the residue analysis...
November 7, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27754814/use-pattern-of-pesticides-and-their-predicted-mobility-into-shallow-groundwater-and-surface-water-bodies-of-paddy-lands-in-mahaweli-river-basin-in-sri-lanka
#5
Piyal Aravinna, Namal Priyantha, Amarasooriya Pitawala, Sudharma K Yatigammana
Pesticides applied on agricultural lands reach groundwater by leaching, and move to offsite water bodies by direct runoff, erosion and spray drift. Therefore, an assessment of the mobility of pesticides in water resources is important to safeguard such resources. Mobility of pesticides on agricultural lands of Mahaweli river basin in Sri Lanka has not been reported to date. In this context, the mobility potential of 32 pesticides on surface water and groundwater was assessed by widely used pesticide risk indicators, such as Attenuation Factor (AF) index and the Pesticide Impact Rating Index (PIRI) with some modifications...
October 18, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27737616/advantages-and-risks-of-using-steel-slag-in-preparing-composts-from-raw-organic-waste
#6
Xuefei Tu, Apichaya Aneksampant, Shizusa Kobayashi, Atsushi Tanaka, Ryo Nishimoto, Masami Fukushima
It had been reported that iron and manganese oxides in steel slag enhanced the production of humic acid (HA) from low-molecular-weight compounds, such as phenolic acids, amino acids, and saccharides. In the present study, this function of steel slag was applied to the composting of raw organic wastes (ROWs). The degree of humification of HAs is an important factor in evaluating compost quality. Thus, HAs were extracted from the prepared composts and the humification parameters were determined, in terms of elemental compositions, acidic functional group contents, molecular weights, spectroscopic parameters from UV-vis absorption and (13)C NMR spectra...
October 13, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27726598/application-of-the-quechers-method-for-the-determination-of-organochlorine-pesticide-residues-in-brazilian-fruit-pulps-by-gc-ecd
#7
Mário Paz, Luísa Correia-Sá, Carla B Vidal, Helena Becker, Elisane Longhinotti, Valentina F Domingues, Cristina Delerue-Matos
The Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method was applied to the extraction of 14 organochlorine pesticides (OCPs) residues from commercial fruit pulps available in supermarkets in Fortaleza, Northeastern Brazil. The analyses were carried out by gas chromatography (GC), coupled to an electron-capture detector (ECD), and were confirmed by GC-tandem mass spectrometry (MS). The parameters of the analytical method, such as accuracy, precision, linear range, limits of detection and quantification, were determined for each pesticide...
October 11, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27726502/resistance-in-bacteria-and-indirect-beta-lactamase-detection-in-e-coli-isolated-from-culex-pipiens-detected-by-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#8
Lukáš Hleba, Vladimír Kmeť, Tomáš Tóth, Miroslava Kačániová
The aim of this study was detections of antibiotic resistance and resistance mechanism in bacteria isolated from mosquitos (Culex pipiens) living near humans. Therefore, antibiotic resistance in bacteria isolated from Culex pipiens was investigated by disk diffusion test and MIC E-test in this study. MALDI-TOF mass spectrometry was used for detection of resistant mechanism. In this study, hydrolytic breakdown products after a few hours of incubation of the bacteria isolated from Culex pipiens were detected...
October 11, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27726497/occurrence-of-aflatoxin-m1-in-human-milk-samples-in-vojvodina-serbia-estimation-of-average-daily-intake-by-babies
#9
Jelena R Radonić, Sunčica D Kocić Tanackov, Ivana J Mihajlović, Zorica S Grujić, Mirjana B Vojinović Miloradov, Marija M Škrinjar, Maja M Turk Sekulić
The objectives of the study were to determine the aflatoxin M1 content in human milk samples in Vojvodina, Serbia, and to assess the risk of infants' exposure to aflatoxins food contamination. The growth of Aspergillus flavus and production of aflatoxin B1 in corn samples resulted in higher concentrations of AFM1 in milk and dairy products in 2013, indicating higher concentrations of AFM1 in human milk samples in 2013 and 2014 in Serbia. A total number of 60 samples of human milk (colostrum and breast milk collected 4-8 months after delivery) were analyzed for the presence of AFM1 using the Enzyme Linked Immunosorbent Assay method...
October 11, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27726483/herbicide-toxicity-selectivity-and-hormesis-of-nicosulfuron-on-10-trichogrammatidae-hymenoptera-species-parasitizing-anagasta-ephestia-kuehniella-lepidoptera-pyralidae-eggs
#10
Germano L D Leite, Paula D De Paulo, José C Zanuncio, Wagner De S Tavares, Anarelly C Alvarenga, Luan R Dourado, Edilson P R Bispo, Marcus A Soares
Selective agrochemicals including herbicides that do not affect non-target organisms such as natural enemies are important in the integrated pest management (IPM) programs. The aim of this study was to evaluate the herbicide toxicity, selectivity and hormesis of nicosulfuron, recommended for the corn Zea mays L. (Poaceae) crop, on 10 Trichogrammatidae (Hymenoptera) species. A female of each Trichogramma spp. or Trichogrammatoidea annulata De Santis, 1972 was individually placed in plastic test tubes (no choice) with a cardboard containing 45 flour moth Anagasta ( = Ephestia) kuehniella Zeller, 1879 (Lepidoptera: Pyralidae) eggs...
October 11, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27629156/simultaneous-determination-of-eight-metabolites-of-organophosphate-and-pyrethroid-pesticides-in-urine
#11
Xin Y Guo, Li S Sun, Meng Y Huang, Wei L Xu, Ying Wang, Na Wang
A simultaneous method for quantifying eight metabolites of organophosphate pesticides and pyrethroid pesticides in urine samples has been established. The analytes were extracted using liquid-liquid extraction coupled with WCX solid phase extraction (SPE) cartridges. Eight metabolites were chemically derivatized before analysis using gas chromatography-tandem mass spectrometry (GC-MS-MS). The separation was performed on a HP-5MS capillary column (30 m × 0.25 mm × 0.25 µm) with temperature programming...
September 14, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27628961/short-chain-nitrocompounds-as-a-treatment-of-layer-hen-manure-and-litter-effects-on-in-vitro-survivability-of-salmonella-generic-e-coli-and-nitrogen-metabolism
#12
Oscar Ruiz-Barrera, Robin C Anderson, Michael E Hume, Jonatan Corrales-Millan, Yamicela Castillo-Castillo, Agustin Corral-Luna, Jose Luis Guevara-Valdez, Jaime Salinas-Chavira, Carlos Rodriguez-Muela, Claudio Arzola-Alvarez
The current study was conducted to assess the bactericidal effectiveness of several nitrocompounds against pathogens in layer hen manure and litter. Evidence from an initial study indicated that treatment of layer hen manure with 12 mM nitroethane decreased populations of generic E. coli and total coliforms by 0.7 and 2.2 log10 colony forming units (CFU) g(-1), respectively, after 24 h aerobic incubation at ambient temperature when compared to untreated populations. Salmonella concentrations were unaffected by nitroethane in this study...
September 14, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27628767/degradation-products-of-profenofos-as-identified-by-high-field-fticr-mass-spectrometry-isotopic-fine-structure-approach
#13
Dusit Angthararuk, Mourad Harir, Philippe Schmitt-Kopplin, Somyote Sutthivaiyakit, Antonius Kettrup, Pakawadee Sutthivaiyakit
This study was performed to identify the degradation products of profenofos "a phenyl organothiophosphate insecticide" in raw water (RW) collected from the entry point of Metropolitan Water Works Authority "Bangkaen, Thailand" and ultrapure water (UPW) with and without TiO2 under simulated sunlight irradiation. Degradation of profenofos was followed with ultrahigh performance liquid chromatography (UHPLC) and follows pseudo first-order kinetic. Accordingly, high-field FTICR mass spectrometry coupled to an electrospray ionization source was used to reveal the degradation routes of profenofos and the isotopic fine structures (IFS) elucidations to approve the chemical structures of its degradation products...
September 14, 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27854181/eov-editorial-board
#14
(no author information available yet)
No abstract text is available yet for this article.
December 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27768529/effects-of-nozzle-types-and-2-4-d-formulations-on-spray-deposition
#15
Robinson L Contiero, Denis F Biffe, Jamil Constantin, Rubem S de Oliveira, Guilherme B P Braz, Felipe R Lucio, Jerome J Schleier
The objective of this study was to evaluate the effects of nozzle types and 2,4-D formulations on spray deposition on different targets. Two field experiments were carried out in a completely randomized design, and treatments were arranged in a factorial scheme. Species in experiment 1 were Sumatran fleabane (Conyza sumatrensis) and Brazil pusley (Richardia brasiliensis) and in experiment 2 were soybeans (Glycine max) and Benghal dayflower (Commelina benghalensis). For both experiments, the first factor corresponded to spray nozzles with different settings (AD 110...
December 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27764581/liver-alterations-in-oreochromis-niloticus-pisces-induced-by-insecticide-imidacloprid-histopathology-and-heat-shock-protein-in-situ-localization
#16
Yadira Ansoar-Rodríguez, Cintya A Christofoletti, Jorge E Correia, Raphael B de Souza, Cristina Moreira-de-Sousa, Ana Claudia de Castro Marcato, Odair C Bueno, Osmar Malaspina, Elaine C M Silva-Zacarin, Carmem S Fontanetti
Liver is very sensitive to environmental contaminants such as pesticides, it being the first target of toxicity of a substance. The objective of this study was to investigate the possible effects of the insecticide imidacloprid (IMI) on the liver of Oreochromis niloticus according concentrations used for growing sugarcane. A semi-quantitative analysis of histopathological alterations of IMI on liver was performed by light microscopy and cellular labeling of heat shock proteins (HSP70) by immunohistochemistry...
December 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27715651/1h-nmr-based-metabolomic-study-on-toxicity-of-methomyl-and-methidathion-in-fish
#17
Dahye Yoon, Siwon Kim, Minji Lee, Changshin Yoon, Suhkmann Kim
A (1)H-nuclear magnetic resonance (NMR) spectroscopy with multivariate analysis was applied to detect the toxicity of antiacetylcholinesterase insecticides, methomyl (methyl (1E)-N-(methylcarbamoyloxy)ethanimidothioate) and methidathion (3-(dimethoxyphosphinothioyl sulfanylmethyl)-5-methoxy-1,3,4-thiadiazol-2-one), using zebrafish (Danio rerio) and Chinese bleak (Aphyocypris chinensis). Generally, methomyl and methidathion have been believed not to highly accumulate in fish tissues. However, these pesticides showed their toxicity by altering patterns of whole-body metabolites in neurotransmitter balance, energy metabolism, oxidative stress, and muscle maintenance in low concentrations...
December 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27715504/eco-friendly-peg-based-controlled-release-nano-formulations-of-mancozeb-synthesis-and-bioefficacy-evaluation-against-phytopathogenic-fungi-alternaria-solani-and-sclerotium-rolfsii
#18
Sujan Majumder, Najam A Shakil, Jitendra Kumar, Tirthankar Banerjee, Parimal Sinha, Braj B Singh, Parul Garg
Controlled release (CR) nano-formulations of Mancozeb (manganese-zinc double salt of N,N-bisdithiocarbamic acid), a protective fungicide, have been prepared using laboratory-synthesized poly(ethylene glycols) (PEGs)-based functionalized amphiphilic copolymers without using any surfactants or external additives. The release kinetics of the developed Mancozeb CR formulations were studied and compared with that of commercially available 42% suspension concentrate and 75% wettable powder. Maximum amount of Mancozeb was released on 42nd day for PEG-600 and octyl chain, PEG-1000 and octyl chain, and PEG-600 and hexadecyl chain, on 35th day for PEG-1000 and hexadecyl chain, on 28th day for PEG-1500 and octyl chain, PEG-2000 and octyl chain, PEG-1500 and hexadecyl chain, and PEG-2000 and hexadecyl chain in comparison to both commercial formulations (15th day)...
December 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27715499/biodegradation-of-malathion-%C3%AE-and-%C3%AE-endosulfan-by-bacterial-strains-isolated-from-agricultural-soil-in-veracruz-mexico
#19
Catya Jimenez-Torres, Irmene Ortiz, Pablo San-Martin, R Idalia Hernandez-Herrera
The objective of this study was to evaluate the capacity of two bacterial strains isolated, cultivated, and purified from agricultural soils of Veracruz, Mexico, for biodegradation and mineralisation of malathion (diethyl 2-(dimethoxyphosphorothioyl) succinate) and α- and β-endosulfan (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6-9-methano-2,4,3-benzodioxathiepine-3-oxide). The isolated bacterial strains were identified using biochemical and morphological characterization and the analysis of their 16S rDNA gene, as Enterobacter cloacae strain PMM16 (E1) and E...
December 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/27715497/application-of-1d-and-2d-mfr-reactor-technology-for-the-isolation-of-insecticidal-and-anti-microbial-properties-from-pyrolysis-bio-oils
#20
Mohammad M Hossain, Ian M Scott, Franco Berruti, Cedric Briens
Valuable chemicals can be separated from agricultural residues by chemical or thermochemical processes. The application of pyrolysis has already been demonstrated as an efficient means to produce a liquid with a high concentration of desired product. The objective of this study was to apply an insect and microorganism bioassay-guided approach to separate and isolate pesticidal compounds from bio-oil produced through biomass pyrolysis. Tobacco leaf (Nicotianata bacum), tomato plant (Solanum lycopersicum), and spent coffee (Coffea arabica) grounds were pyrolyzed at 10°C/min from ambient to 565°C using the mechanically fluidized reactor (MFR)...
December 2016: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
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