Transformation of potentially toxic lead to crystalline Pb (NO3)2
The accumulation of lead in the environment is a cause of health problems in humans. The mean lethal dose reported in mg/kg for Pb, Pb(NO3)2 and PbO is 400, 2250 and 2000, respectively. Due to the high toxicity of metallic lead with respect to lead nitrate, a methodology has been developed to transf...
Gorde:
| Egile Nagusiak: | , , , , |
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| Formatua: | Online |
| Hizkuntza: | spa |
| Argitaratua: |
Universidad Autónoma de Baja California
2019
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| Sarrera elektronikoa: | https://recit.uabc.mx/index.php/revista/article/view/41 |
| Etiketak: |
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| Gaia: | The accumulation of lead in the environment is a cause of health problems in humans. The mean lethal dose reported in mg/kg for Pb, Pb(NO3)2 and PbO is 400, 2250 and 2000, respectively. Due to the high toxicity of metallic lead with respect to lead nitrate, a methodology has been developed to transform residual lead into lead nitrate, whose toxicity is five times lower than metallic lead. On the other hand, lead nitrate can be a precursor for the synthesis of materials with potential industrial application. The synthesis of Pb(NO3)2 is carried out by mixing the residual metallic lead and 15.7 molar nitric acid in a proportion of reagents [1:4]. Subsequently, the mixture is subjected to magnetic stirring to dissolve the lead and form a white precipitate, dried at 110 ° C for 1 h obtaining an experimental yield of 99 %. The synthesized material is characterized by X–ray diffraction, scanning electron microscopy and energy dispersion spectroscopy. Likewise, this methodology has a favorable impact on ecosystems, since lead contamination will be diminished. |
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