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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Fluoride in California wines and raisins
Fluoride ion-selective electrode analyses of nineteen California wines revealed fluoride concentrations ranging from 0.23 to 2.80 ppm (mean 1.02 ppm , with seven samples above the international limit of 1 ppm). The water-extractable F content of five brands of California raisins varied from 0.83 to 5.20 ppm (mean 2.71 ppm).
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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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Neurobehavioral evaluation of soil and structural fumigators using methyl bromide and sulfuryl fluoride.
Neurobehavioral functions affected by methyl bromide exposure were evaluated in California structural and soil fumigators using methyl bromide and sulfuryl fluoride. Sampling data revealed that structural fumigators are exposed for up to 1.5 hrs/day to 0-2.2 ppm methyl bromide and/or 10-200 ppm sulfuryl fluoride, and soil fumigators can be exposed
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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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Sulfuryl Fluoride Poisonings in Structural Fumigation, a Highly Regulated Industry-Potential Causes and Solutions.
Structural fumigations using sulfuryl fluoride for the extermination of dry-wood termites are conducted by the thousands in California and other warm-weather states. Sulfuryl fluoride is an odorless gas that targets the nervous system and can cause respiratory irritation, pulmonary edema, nausea, vomiting, seizures, and death. Structural voids or compartments such
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