Andrew Singer
@oxonandrew.bsky.social
520 followers
780 following
190 posts
Environmental Microbiologist, Pollution Scientist; 327.66 ppm CO2 #AMR #OneHealth #WBE #CSO
Previously: https://twitter.com/OxonAndrew
https://www.ceh.ac.uk/staff/andrew-singer
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Andrew Singer
@oxonandrew.bsky.social
· May 19
Wastewater surveillance for assessing human exposure to pesticides: Investigating populations living near flower bulb fields
Wastewater-based surveillance (WBS) is a complementary approach that overcomes some of the limitations of human biomonitoring, such as sampling biases…
www.sciencedirect.com
Andrew Singer
@oxonandrew.bsky.social
· May 19
Variability of Biodegradation Rates of Commercial Chemicals in Rivers in Different Regions of Europe
Biodegradation is one of the most important processes influencing the fate of organic contaminants in the environment. Quantitative understanding of the spatial variability in environmental biodegradation is still largely uncharted territory. Here, we conducted modified OECD 309 tests to determine first-order biodegradation rate constants for 97 compounds in 18 freshwater river segments in five European countries: Sweden, Germany, Switzerland, Spain, and Greece. All but two of the compounds showed significant spatial variability in rate constants across European rivers (ANOVA, P < 0.05). The median standard deviation of the biodegradation rate constant between rivers was a factor of 3. The spatial variability was similar between pristine and contaminated river segments. The longitude, total organic carbon, and clay content of sediment were the three most significant explanatory variables for the spatial variability (redundancy analysis, P < 0.05). Similarities in the spatial pattern of biodegradation rates were observed for some groups of compounds sharing a given functional group. The pronounced spatial variability presents challenges for the use of biodegradation simulation tests to assess chemical persistence. To reflect the variability in the biodegradation rate, the modified OECD 309 test would have to be repeated with water and sediment from multiple sites.
pubs.acs.org
Andrew Singer
@oxonandrew.bsky.social
· May 17
Human norovirus (HuNoV) GII RNA in wastewater solids at 145 United States wastewater treatment plants: comparison to positivity rates of clinical specimens and modeled estimates of HuNoV GII shedders ...
Journal of Exposure Science & Environmental Epidemiology - Human norovirus (HuNoV) GII RNA in wastewater solids at 145 United States wastewater treatment plants: comparison to positivity rates...
www.nature.com
Andrew Singer
@oxonandrew.bsky.social
· Apr 30
Differing terminology used to describe antimicrobial resistance can influence comprehension and subsequent behavioural intent - Communications Medicine
Grailey et al. investigate the impact of different terminologies used to describe AMR, testing terms co-designed with the public. Terminology that is familiar, such as the inclusion of ‘antibiotics’ c...
www.nature.com