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Copyright of Revista Andaluza de Medicina del Deporte is the property of Centro Andaluza de Medicina del Deporte and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Taking into account the importance of the effect on the health of PM10 inhalable particles and the metals associated with them, the levels of metals were assessed: Al, Cr, V, As, Se, Na, K, Mg, Ca, Bi, Fe, Hg and Pb, generated by natural sources such as marine aerosol and re-suspension of the soil and anthropogenic sources such as coal mining and vehicular circulation, in Fonseca, La Guajira, Colombia, samples were collected at two sites near the carboniferous complex, during drought and rainfall periods, using a high volume sampler with quartz fiber filters, with a monthly frequency for a total of 20. The samples were subjected to a process of acid digestion, and analyzed by mass spectrometry with inductively coupled Plasma (ICP-MS). The reported PM10 levels exceeded the WHO-established 20 µg/m³ annual standard. The most concentrated metals correspond to Na (2.4 µg/m³ 1.49 µg/m³), Al (0.52 µg/m³ 1.78 µg/m³), Ca (0.49 µg/m³ 0.60 µg/m³) and Cr (0.40 Mg/m³ 0.18 µg/m³). There were no statistically significant differences between the sampling sites. V, Hg and Pb did not exceed the air quality standard established for Colombia and who; As such, the As has largely exceeded the permissible limit of Colombia and OMS. In addition, the statistical analysis allows to conclude that metals can come from the same source, both natural and anthropogenic. [ABSTRACT FROM AUTHOR]

Introduction. The treatment of water polluted with metals has gained a great importance in history, as the presence of such water not only generates a nasty visual impact, but also affects the ecosystems. One of the most toxic and stable metals in solution is Cr (VI). Its identification and quantification are very important, and so is its removal. Among the analysis techniques, colorimetry is one of the most economic and efficient to identify this metallic ion in solution, thanks to the action of the 1,5-diphenylcarbazid, which allows an exact determination of its presence in solution. Objective. To establish the best conditions to implement 1,5- diphenylcarbazid as a complexity agent to determine Cr (VI) in solution. Materials and methods. The best work conditions were assessed by elaborating the calibration curves, identification of extinction coefficients, effect of the dissolvent, detection-quantification limit and degradation kinetics, after the action of the complexity agent. The determinations were performed with the UV- visible spectrophotometry technique. Results. The calibration curves obtained satisfactory results (99.11 %, 97.35 % and 99.17 %) with 95 % of confidence. The detection limit determined is 0.096 ppm and the quantification limit is 0.35 ppm. These results are very satisfactory, given the sensibility of the technique. The effect of the dissolvent with acetone, methanol and ethanol showed small batochromic displacements and a good correlation. Conclusion. 1,5-diphenylcarbazid is an adequate complexity agent to determine Cr (VI) in solution. [ABSTRACT FROM AUTHOR]