chemical parameters article 18 Argentina 10 controlled study 10 Article 6 nonhuman 6 pH 6 priority journal 6 Air pollution 4 Animals 4 Copper 4 Hydrogen-Ion Concentration 4 adult 4 air pollution 4 biological marker 4 biological monitoring 4 calculation 4 catalyst 4 chemical reaction 4 chlorophyll 4 copper 4 industry 4 magnesium 4 multivariate analysis 4 nitrogen 4 physical parameters 4 protein 4 structure analysis 4 sulfur 4 temperature 4