The nuclear track detector CR-39 is used in the detection of radon gas concentration in selected samples of cosmetics in the local market. Products of wide use are selected and employed in the current study. Six types of cosmetic products of different origins are tested by taking equivalent quantities of these products and putting them in plastic boxes. The detector is left with the samples for a period of 50 days. In addition to measuring the rate of surface evaporation of radon gas, measurements of the annual equivalent dose of radon gas are also carried out. The results show that the highest concentration of radon gas is in Charcoal Facial SCRuB (American origin) and it is equal to 0.0795 Bq/m3, whereas the lowest one in "bb" cream basis (5 in 1) is equal to 0.0355 Bq/m3. Based on specific international organizations and agencies, the concentration of radon in the samples under consideration is within the acceptable limits.
This works strong the embossing as regards riches (Au) nanoparticles (NPs) regarding attenuate TiO2 films. Au (Au-TiO2) patterned flabby film TiO2. The morphology, cleanly structure, issue administration then optical homes concerning the films hold been studied. Gold nanoparticles (Au-NPs) are synthesized along the useful resource on lowering hydrated gold steel ions of touch together along aqueous sow dermis extract. The alternate among the elevation or assignment about Au NPs elevated the reply above the ethanol gas sensors. The organized Au-TiO2 was once tested, of assessment together with allusion TiO2 membranes, such then ethanol sensors at 250-350 ° C at a fuel attention of 50-1000 ppm. In addition, the SERS deep concerning the excised Au/ TiO2 emaciated movie is about iii cases that above the deposited Au/ TiO2 gaunt film. The results proven in imitation of so much aggregation Au-coated TiO2 at 6 s spray epoch gave the beneficial file on 514 at 350 ° C deed useless heat since 1000 ppm fuel concentration.
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