I'm a german student of biology. I collected samples of rats in Lima to investigate the heavy metal concentrations in the inner organs. The aim was to find a good bioindication system. But I can not find new informations about the emissions in Lima. I only knew that most of the cars drive with leaded fuel. but I don't know much about the industry emissions, the waste disposal and so on. Could someone help me? And give me some informations in english?