Abstract
The use of the moss Thuidium delicatulum (Hedw.) Mitt. was studied as bioindicator of environmental contamination by zinc, copper and lead in the city of Boquete (Chiriquí, Panamá), for a period of 43 days from January to March, 2008. The methodology of transplant of mosses samples was used and the zinc, copper and lead deposition levels were quantified. Twelve stations were established along Los Fundadores avenue, up to Alto Chiquero zone, in a 12 km transect. Chemicals methods as spectrophotometer of atomic absorption and voltamperometry of anodic redisolution were used. Results show high concentrations of metals (406.92 ppm of Zn; 118.04 ppm of Cu and 7301.8 ppm of Pb) in the sample places next to the urban zone. Probably, these results were related to the presence of car repair shops, gas stations, cabinetmakers shops and bus stations in the area. Also high concentration of metals as zinc (397.40 ppm) and lead (5688.00 ppm) at a sample place near to a crop area were found. Agrochemicals in this area were considerate the main emission source of these metals.