Fig. 4From: Novel allyl-hydrazones including 2,4-dinitrophenyl and 1,2,3-triazole moieties as optical sensor for ammonia and chromium ions in waterJob’s plot for the determination of the binding stoichiometry of a compound 4a with Hg2+ obtained from variations in absorption at 418 nm, b compound 4b with Hg2+ obtained from variations in absorption at 418 nmBack to article page