[Prevalence and distribution of asbestos lung residue in a Spanish urban population].

Introduction: The purpose of the present study is to analyse the prevalence and distribution of asbestos lung residue in the Barcelona urban population.

Material And Methods: Lung autopsy samples were obtained from 35 individuals who had lived in Barcelona. The close family were interviewed in order to rule out asbestos exposure.

Efficacy of Fe(o,o-EDDHA) and Fe(o,p-EDDHA) isomers in supplying Fe to strategy I plants differs in nutrient solution and calcareous soil.

The FeEDDHA [iron(3+) ethylenediamine di(o-hydroxyphenylacetic) acid] is one of the most efficient iron chelates employed in the correction of iron clorosis in calcareous soils. FeEDDHA presents different positional isomers: the ortho-ortho (o,o), the ortho-para (o,p), and the para-para (p,p). Of these isomers, the p,p cannot chelate Fe in soil solution in a wide range of pH values, while both o,o and o,p can.