QUANTITATIVE DETERMINATION OF HEAVY METAL HYPERACCUMULATION IN A MACROPHYTE SAMPLE OF SCHOENOPLECTUS CALFORNICUS FROM LAGO SAN PABLO, IMBABURA-ECUADOR. 1390-1117 [Internet]. 2018 Mar. 15 [cited 2024 Jul. 22];19(4). Available from: https://journal.espe.edu.ec/ojs/index.php/ciencia/article/view/545