title: Evaluation of the measurement of Cu(II) bioavailability in complex aqueous media using a hollow-fiber supported liquid membrane device (HFSLM) and two microalgae species (Pseudokirchneriella subcapitata and Scenedesmus acutus).
abstract: The environmental bioavailability of copper was determined using a hollow-fiber supported liquid membrane (HFSLM) device as a chemical surrogate and two microalgae species (Scenedesmus acutus and Pseudokirchneriella subcapitata). Several experimental conditions were studied: pH, the presence of organic matter, inorganic anions, and concomitant cations. The results indicated a strong relationship between the response given by the HFSLM and the microalgae species with free copper concentrations measured by an ion selective electrode (ISE), in accordance with the free-ion activity model (FIAM). A significant positive correlation was evident when comparing the bioavailability results measured by the HFSLM and the S. acutus microalga species, showing that the synthetic device may emulate biological uptake and, consequently, be used as a chemical test for bioavailability measurements using this alga as a biological reference.
authors.affiliation: Departamento de Química Analítica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico.
authors.forename: Erik A
authors.initials: EA
authors.lastname: Rodríguez-Morales
authors.affiliation: Departamento de Química Analítica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico. Electronic address: erdsmg@unam.mx.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Rodríguez de San Miguel
authors.affiliation: Departamento de Química Analítica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico.
authors.forename: Josefina
authors.initials: J
authors.lastname: de Gyves
mesh_terms: D000704:Analysis of Variance; D001682:Biological Availability; D003300:Copper / Q000032:analysis* / Q000378:metabolism; D004784:Environmental Monitoring / Q000379:methods*; D017736:Ion-Selective Electrodes; D008567:Membranes, Artificial; D058086:Microalgae / Q000737:chemistry* / Q000378:metabolism; D008962:Models, Theoretical; D044444:Scenedesmus / Q000737:chemistry* / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
chemical_list: D008567:Membranes, Artificial; D014874:Water Pollutants, Chemical; D003300:Copper
keywords: Bioavailability; Chemical surrogate; Copper; Hollow fiber; Microalgae