A duodecennial national synthesis of antibiotics in China's major rivers and seas (2005–2016)

S Li, W Shi, W Liu, H Li, W Zhang, J Hu, Y Ke… - Science of the Total …, 2018 - Elsevier
The occurrence of 94 antibiotics in water and sediments from seven major rivers and four
seas in China during 2005–2016 was reviewed. Twelve antibiotics were most frequently …

Determination of pKa values of active pharmaceutical ingredients

S Babić, AJM Horvat, DM Pavlović… - TrAC Trends in …, 2007 - Elsevier
The acid dissociation constant is an important physicochemical parameter of a substance,
and knowledge of it is of fundamental importance in a wide range of applications and …

Photocatalytic transformation fate and toxicity of ciprofloxacin related to dissociation species: Experimental and theoretical evidences

S Li, T Huang, P Du, W Liu, J Hu - Water Research, 2020 - Elsevier
Chemical speciation of ionizable antibiotics greatly affects its photochemical kinetics and
mechanisms; however, the mechanistic impact of chemical speciation is not well …

Occurrence of antibiotics, estrogenic hormones, and UV-filters in water, sediment, and oyster tissue from the Chesapeake Bay

K He, E Hain, A Timm, M Tarnowski, L Blaney - Science of the Total …, 2019 - Elsevier
Globally, the occurrence of contaminants of emerging concern (CECs) in the environment
has raised critical questions on ecological and human health, but few efforts have focused …

Direct photochemistry of three fluoroquinolone antibacterials: norfloxacin, ofloxacin, and enrofloxacin

KH Wammer, AR Korte, RA Lundeen, JE Sundberg… - Water Research, 2013 - Elsevier
Fluoroquinolone (FQ) antibacterial compounds are frequently detected in the aquatic
environment, and photodegradation is expected to play an important role in FQ fate in some …

Role of humic substances in the degradation pathways and residual antibacterial activity during the photodecomposition of the antibiotic ciprofloxacin in water

J Porras, C Bedoya, J Silva-Agredo, A Santamaría… - Water Research, 2016 - Elsevier
This study focuses on the photo-transformation, in presence of humic substances (HSs), of
ciprofloxacin (CIP), a commonly-used fluoroquinolone antibiotic whose presence in aquatic …

Dispersive liquid–liquid microextraction combined with ultra-high performance liquid chromatography for the simultaneous determination of 25 sulfonamide and …

AV Herrera-Herrera, J Hernández-Borges… - … of pharmaceutical and …, 2013 - Elsevier
In this work, a dispersive liquid–liquid microextraction (DLLME) procedure combined with
ultra-high performance liquid chromatography with diode-array detection was developed to …

Measurement of dissociation constants (pKa values) of organic compounds by multiplexed capillary electrophoresis using aqueous and cosolvent buffers

M Shalaeva, J Kenseth, F Lombardo… - Journal of pharmaceutical …, 2008 - Elsevier
Abstract Evaluation of a multiplexed capillary electrophoresis (CE) method for pK a
measurements of organic compounds, including low solubility compounds, is presented …

Trends in soil sorption coefficients within common antimicrobial families

RA Figueroa-Diva, D Vasudevan, AA MacKay - Chemosphere, 2010 - Elsevier
Sorption coefficients (Kd) of fluoroquinolone, tetracycline, and sulfonamide antimicrobial
compounds were measured for seven soils between pH 4.5 and 8.5 using batch sorption …

Determination of acid dissociation constants by capillary electrophoresis

SK Poole, S Patel, K Dehring, H Workman… - … of Chromatography A, 2004 - Elsevier
Capillary electrophoresis affords a simple, automated approach for the measurement of pKa
values in the range 2–11 at a throughput of less than 1h per sample per instrument …