Interactions of ciprofloxacin (CIP), titanium dioxide (TiO2) nanoparticles and natural organic matter (NOM) in aqueous suspensions

The Science of the Total Environment
Elke FriesAnne Togola

Abstract

The aim of the present study was to investigate interactions of the antibiotic ciprofloxacin (CIP), titanium dioxide nanoparticles (TiO2 NP) and natural organic matter (NOM) in aqueous suspensions. The mean hydrodynamic diameter of particles of TiO2 NP and NOM in the suspensions ranged from 113 to 255nm. During batch experiments the radioactivity resulting from (14)CIP was determined in the filtrate (filter pore size 100nm) by scintillation measurements. Up to 72h, no significant sorption of NOM to TiO2 NP was observed at a TiO2 NP concentration of 5mg/L. When the concentration of TiO2 NP was increased to 500mg/L, a small amount of NOM of 9.5%±0.6% was sorbed at 72h. The low sorption affinity of NOM on TiO2 NP surfaces could be explained by the negative charge of both components in alkaline media or by the low hydrophobicity of the NOM contents. At a TiO2 NP concentration of 5mgL(-1), the sorption of CIP on TiO2 NP was insignificant (TiO2 NP/CIP ratio: 10). When the TiO2 NP/CIP ratio was increased to 1000, a significant amount of 53.6%±7.2% of CIP was sorbed on TiO2 NP under equilibrium conditions at 64h. In alkaline media, CIP is present mainly as zwitterions which have an affinity to sorb on negatively charged TiO2 NP surface...Continue Reading

References

Feb 4, 1999·Journal of Colloid and Interface Science·M BjelopavlicR Hayes
Sep 2, 2000·The Journal of Antimicrobial Chemotherapy·B Halling-SørensenF Ingerslev
Sep 12, 2003·Environmental Science & Technology·Eva M GoletWalter Giger
Jun 15, 2005·Environmental Science & Technology·Richard H LindbergBarbro A V Andersson
Nov 4, 2006·Analytical and Bioanalytical Chemistry·Yolanda Picó, Vicente Andreu
Aug 27, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Kun YangBaoshan Xing
Mar 13, 2010·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Maryam BanoeeAhmad R Shahverdi
Nov 11, 2010·Analytical and Bioanalytical Chemistry·Despo Fatta-KassinosAnastasia Nikolaou
Sep 3, 2011·International Journal of Hygiene and Environmental Health·Tiphanie DeblondePhilippe Hartemann
Oct 28, 2011·Expert Review of Anti-infective Therapy·Adil M AllahverdiyevMiriam Rafailovich
Nov 9, 2012·The Science of the Total Environment·Emily M Van WierenJonathan W Peterson
Nov 14, 2013·Environmental Pollution·Tian Yin SunBernd Nowack

❮ Previous
Next ❯

Citations

Jul 22, 2017·Environmental Toxicology and Chemistry·Gerardo Pulido-ReyesRoberto Rosal
Jul 14, 2020·Environmental Science and Pollution Research International·Monika JainMika Sillanpää

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.