International Journal of Environmental & Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 21
Published: Nov. 27, 2024
The
Day
River
is
an
important
freshwater
resource
in
the
Red
Delta,
economic
region
of
Vietnam.
This
paper
presents
ecological
risk
assessment
22
pharmaceutical
residues
dry
and
rainy
seasons
2023.
Total
concentrations
pharmaceuticals
(Azithromycin-AZI,
Carbamazepine-CBZ,
Cefotaxime-CTX,
Cephalexin-CLX,
Ceftiofur-CTF,
Chlortetracycline-CTC,
Ciprofloxacin-CIP,
Clarithromycin-CLA,
Doxycycline-DOX,
Enrofloxacin-ENR,
Erythromycin-ERY,
Levofloxacin-LEV,
Moxifloxacin-MFX,
Norfloxacin-NOR,
Ofloxacin-OFL,
Oxytetracycline-OTC,
Roxithromycin-ROX,
Sotalol-SOL,
Spiramycin-SPI,
Sulfamethoxazole-SMX,
Tetracycline-TET,
Trimethoprim-TRI),
varied
from
1.2
to
237.4
(mean
=
33.8)
ng.L−1.
Of
investigated,
14
were
detected,
which
SMX
had
highest
concentration
(24.3
ng.L−1)
most
frequent
detection
(69%).
potential
for
algae,
microbes
invertebrates
revealed
that
only
CLA
exhibits
a
'high
risk'
algae
whereas
all
other
classed
as
having
'negligible
adverse
effects'.
Seasonal
variation
their
relationship
with
water
quality
five
(NOR,
CTX,
CIP,
CLX,
SOL)
probably
originate
point
sources
eight
others
(SMX,
AZI,
ERY,
CLA,
ROX,
CBZ,
TRI
LEV)
are
diffuse
watershed.
implications
these
results
plead
setting
up
regular
monitoring
this
economically
river
basin.
