Metal concentrations in water and sediments from tourist beaches of Acapulco, Mexico.

A survey on the metal concentrations (As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sr, V, Zn) in beach water and sediments is reported from the tourist destination of Acapulco city on the Pacific coast of Mexico. The concentration of dissolved trace metals (DTMs) in beach water and acid leachable trace metals (ALTMs) in sediments indicated that they are anthropogenic in nature due to the increased tourist activities in the crowded beach locations. The statistical analysis indicates Fe and Mn play a major role as metal scavengers in both the medium (water and sediment) and the higher value of other metals is site specific in the study area, indicating that they are transported from the local area.

Evaluation and analysis of the noise quality of Ambur, Tamil Nadu, India.

The noise levels of Ambur town were studied in silence, residential, commercial and industrial zones. Noise levels were assessed in 22 locations in a typical peak and non-peak hours of a day. In non-peak hours, a gradual decrease in noise levels is detected.