#eels

  • #Eels in #Thames ’left hyperactive due to high levels of #cocaine in water’ | #London Evening Standard
    https://www.standard.co.uk/news/london/eels-in-thames-left-hyperactive-due-to-high-levels-of-cocaine-in-water-a

    London’s water treatment plants are failing to filter out the class A drug, while downpours are overwhelming waste plants and carry sewage into the river.

    "Increases in #caffeine, cocaine and #benzoylecgonine were observed 24 hours after #sewer #overflow events,” the reseachers said.

    "Concentrations of cocaine and benzoylecgonine remained high in wastewater across the week with only a minor increase over the weekend, which is not consistent with other cities, “ the reseachers said in a paper.

    “London is known as one of the highest consumers of cocaine.”

    • Ca me rappelle cet article :

      Estimation of illicit drugs consumption by wastewater analysis in Paris area (France).
      Karolak S, Nefau T, Bailly E, Solgadi A, Levi Y. Forensic. Sci. Int. 200:153-160 (2010)
      https://www.ncbi.nlm.nih.gov/pubmed/20447786

      Cocaine and its major metabolite benzoylecgonine (BZE), amphetamine, 3,4-methylenedioxymethamphetamine (MDMA) and buprenorphine were measured in raw water and WWTP effluent using HPLC-MS/MS after SPE extraction. Amphetamine was rarely detected. Cocaine and BZE were quantified at levels from 5 to 282 ng L(-1) and 15 to 849 ng L(-1), respectively. MDMA and buprenorphine concentrations remained under 20 ng L(-1). Cocaine consumption was estimated from cocaine or BZE concentrations measured in raw water and the results showed significant difference in drug taking during week or weekend. The estimated doses observed in this study are lower than those reported for others countries, especially Spain and Italy. MDMA consumption was estimated at lower levels than cocaine.