New study finds river wildlife contain cocaine, pharmaceuticals and pesticides

river
Credit: CC0 Public Domain

For the first time, researchers at King's College London, in collaboration with the University of Suffolk, have found a diverse array of chemicals, including illicit drugs and pesticides in UK river wildlife. The study published today in Environment International, looked at the exposure of wildlife, such as the freshwater shrimp Gammarus pulex, to different micropollutants (chemicals found at exceptionally low levels) and the levels of these compounds in the animals.

Consumer products, medicines and drugs can end up in rivers after use and comprise thousands of different chemicals which have the potential to cause environmental harm. The team collected samples from five catchment areas, and 15 different sites across the county of Suffolk. Surprisingly, cocaine was found in all samples tested, and other illicit drugs such as ketamine, pesticides and pharmaceuticals were also widespread in the shrimp that were collected.

Lead author, Dr. Thomas Miller from King's College London said: "Although concentrations were low, we were able to identify compounds that might be of concern to the environment and crucially, which might pose a risk to wildlife.

"As part of our ongoing work, we found that the most frequently detected compounds were illicit drugs, including cocaine and ketamine and a banned pesticide, fenuron. Although for many of these, the potential for any effect is likely to be low."

Professor Nic Bury from the University of Suffolk said: "Whether the presence of cocaine in is an issue for Suffolk, or more widespread an occurrence in the UK and abroad, awaits further research. Environmental health has attracted much attention from the public due to challenges associated with climate change and microplastic pollution. However, the impact of 'invisible' chemical pollution (such as drugs) on wildlife health needs more focus in the UK as policy can often be informed by studies such as these."

Dr. Leon Barron from King's College London added: "Such regular occurrence of in wildlife was surprising. We might expect to see these in such as London, but not in smaller and more rural catchments. The presence of pesticides which have long been banned in the UK also poses a particular challenge as the sources of these remain unclear."


Explore further

Banned pesticides in Europe's rivers

Journal information: Environment International

Citation: New study finds river wildlife contain cocaine, pharmaceuticals and pesticides (2019, May 1) retrieved 26 May 2019 from https://phys.org/news/2019-05-river-wildlife-cocaine-pharmaceuticals-pesticides.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
2671 shares

Feedback to editors

User comments

May 01, 2019
Absence of evidence that we have seen in the past, because we were not looking and did no have such precise tests, is not evidence that the 'micro pollutants' were not there as soon as they were introduced into the environment. Further, they are pharamceuticals and require specific acceptor pathways to be effective at what ever dilution is achieved.

May 01, 2019
Talk about abusing drugs. Crack-heads are pissing it away downstream.

May 06, 2019
OK! These are probably the same people that want all narcotics and ''recreational'' drugs. Soo, this is a problem the EU will take a stand upon no doubt, and ban all antibiotics making sure Humans are allowed to perish so that we can keep the streams and rivers clean. Seems about right.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more