Lead contamination in the Mexican Caribbean recorded by the coral Montastrae annularis (Ellis and Solander)

摘要

Evidence form workwide environmental contamina- tion by lead, as a result of anthropogenic emissions, has been documented. According to lead measurements made in Greenland's ice and snow in the mid 1960s, over 99/100 of the lead in the global troposphere of the Northern hemisphere was anthropogenic (Murozomi Et al., 1969;Robinson and Robbins, 1971). However, Boutron et al. (1191) found that, as a result of recent Limited use of leadedgasoline by the US, Canada, and The European countries, lead concentrations in recently Deposited Greenland snow decreased by a factor of 7.5 Since the 1970s.