{"id":1827,"date":"2020-01-07T09:46:28","date_gmt":"2020-01-07T09:46:28","guid":{"rendered":"http:\/\/www.icterra.pt\/?p=1827"},"modified":"2020-01-23T12:45:53","modified_gmt":"2020-01-23T12:45:53","slug":"pharmaceuticals-in-a-mediterranean-basin-the-influence-of-temporal-and-hydrological-patterns-in-environmental-risk-assessment","status":"publish","type":"post","link":"https:\/\/www.icterra.pt\/legacy\/index.php\/2020\/01\/07\/pharmaceuticals-in-a-mediterranean-basin-the-influence-of-temporal-and-hydrological-patterns-in-environmental-risk-assessment\/","title":{"rendered":"Pharmaceuticals in a Mediterranean Basin: The influence of temporal and hydrological patterns in environmental risk assessment"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-size: 12pt; font-family: arial, helvetica, sans-serif;\">Palma, P., S. Fialho, A. Lima, M. H. Novais, M. J. Costa, N. Montemurro, S.P\u00e9rez, M. Lopez de Alda, 2020: Pharmaceuticals in a Mediterranean Basin: The influence of temporal and hydrological patterns in environmental risk assessment, Science of The Total Environment, Volume 709.<\/span><\/p>\n<p id=\"sp0060\" style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">Occurrence of pharmaceuticals in the aquatic environment is nowadays a well-established issue that has become a matter of both scientific and public concern. Tons of different classes of pharmaceuticals find their way to the environment at variable degrees, after their use and excretion through wastewater and sewage treatment systems.<\/span><\/p>\n<div id=\"as0005\" style=\"text-align: justify;\">\n<p id=\"sp0065\" style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">The main goal of this study was to correlate the dynamics and the environmental risk of pharmaceuticals with different temporal and hydrological patterns, at the Guadiana Basin (South of Portugal). Water samples were collected bimonthly during 2017 (classified as a drought year) and 2018 (post-drought year) in: Zebro, \u00c1lamos and Amieira (intermittent hydrological streams), and Lucef\u00e9cit (perennial hydrological stream). The pharmaceuticals quantified in higher concentrations, out of 27 investigated, were diclofenac (up to 4806\u00a0ng\u00a0L<sup>\u2212<\/sup><sup>1<\/sup>), ibuprofen (3161\u00a0ng\u00a0L<sup>\u2212<\/sup><sup>1<\/sup>), hydrochlorothiazide (2726\u00a0ng\u00a0L<sup>\u2212<\/sup><sup>1<\/sup>) and carbamazepine (3223\u00a0ng\u00a0L<sup>\u2212<\/sup><sup>1<\/sup>). Zebro and \u00c1lamos presented the highest contamination by this group of environmental hazardous substances, which may be correlated with the presence of wastewater treatment plants upstream the sampling point of each stream. Furthermore, the highest concentrations occurred mainly during the dry period (2017), when the flow was nearly inexistent in Zebro, and in \u00c1lamos after the first heavy rainfalls.<\/span><\/p>\n<p id=\"sp0070\" style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">In specific periods, the high concentrations of pharmaceuticals detected may induce risk for the organisms of lowest trophic levels, damaging the balance of the ecosystems at these streams. The risk quotient optimised approach (RQf) integrating exposure, toxicity and persistence factors, ranks the pharmaceuticals investigated in terms of risk for the aquatic ecosystems as follows: diclofenac, ibuprofen and carbamazepine (high risk), clarithromycin (moderate risk), acetaminophen, ofloxacin and bezafibrate (endurable risk), and hydrochlorothiazide (negligible risk).<\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\">\u00a0Read the full article <a href=\"https:\/\/doi.org\/10.1016\/j.scitotenv.2019.136205\">here<\/a>.<\/span><\/p>\n<\/div>\n<p style=\"text-align: justify;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 12pt;\"> .<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Palma, P., S. Fialho, A. Lima, M. H. Novais, M. J. Costa, N. Montemurro, S.P\u00e9rez, M. Lopez de Alda, 2020: Pharmaceuticals in a Mediterranean Basin: The influence of temporal and hydrological patterns in environmental risk assessment, Science of The Total Environment, Volume 709. Occurrence of pharmaceuticals in the aquatic environment is nowadays a well-established issue [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[180,178,177,179],"_links":{"self":[{"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/posts\/1827"}],"collection":[{"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/comments?post=1827"}],"version-history":[{"count":2,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/posts\/1827\/revisions"}],"predecessor-version":[{"id":1893,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/posts\/1827\/revisions\/1893"}],"wp:attachment":[{"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/media?parent=1827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/categories?post=1827"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/tags?post=1827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}