Abstract
Treatment of the larvae of the common fruit fly Drosophila melanogaster with 10, 20, and 40 ppm of the F-containing insecticide cryolite (Na3AlF6) through its normal food resulted in abnormal morphology of its compound eye. A ridge-like appearance of the mechanosensory bristles of the ommatidia was apparent by scanning electron microscopy (SEM). Interestingly, ommatidial disorganization was greater with 10 ppm cryolite than with 20 and 40 ppm. These results indicate that the use of cryolite as an insecticide in fruit orchards may cause morphological alterations in a non-target organism.
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Dermal absorption of fumigant gases during HAZMAT incident exposure scenarios-Methyl bromide, sulfuryl fluoride, and chloropicrin.
Accidental or intentional releases of toxic gases or vapors are the most common occurrence in hazardous material (HAZMAT) incidents that result in human injuries. The most serious hazard from exposure to gases or vapors is via the respiratory system. Dermal uptake, as a secondary route, is still a concern, most
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Synergistic effect of sodium fluoride and cypermethrin on the somatic index and histopathology of albino mice testes.
Male albino mice were treated at 48-hr intervals with cypermethrin and sodium fluoride (NaF), separately and in combination, for 15 and 30 days with 1/10th of the single LD50 dosage of cypermethrin and NaF for individual administration by oral gavage (i.e., 8.5 mg/kg bw and 5.6 mg/kg bw, respectively) and
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Poisoning by organophosphorus nerve agents and pesticides: An overview of the principle strategies and current progress of mass spectrometry-based procedures for verification.
Highlights Evidence of poisoning with organophosphorus (OP) nerve agents requires biomedical verification. OP nerve agents undergo common biotransformation pathways producing valuable biomarkers. Internationally accepted methods target remaining poison, hydrolysis products and protein-adducts. Mass spectrometry-based methods provide optimum selectivity and sensitivity for identification. Methods, strategies, current proceedings, quality criteria and real
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Health effects associated with sulfuryl fluoride and methyl bromide exposure among structural fumigation workers
OBJECTIVES: This study assessed the health effects associated with occupational exposure to methyl bromide and sulfuryl fluoride among structural fumigation workers. METHODS: A cross-sectional study of 123 structural fumigation workers and 120 referents in south Florida was conducted. Nerve conduction, vibration, neurobehavioral, visual, olfactory, and renal function testing was included. RESULTS: The
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Fluoride levels and fluoride contamination of fruit juices
Increasing consumption of beverages as a replacement for water have made fluoride content in beverages an important issue. In this study, forty-three ready-to-drink fruit juices were examined for fluoride ion concentration. It was found that 42% of the samples had more than 1 ppm of fluoride. It was also determined that "pure" fruit juices, often
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