GC/MS analysis of triclosan and its degradation by-products in wastewater and sludge samples from different treatments

Tohidi, Fatemeh; Cai, Zongwei

doi:10.1007/s11356-015-4289-x

Cited by 43 publications

(15 citation statements)

References 43 publications

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“…Moreover, a strong decrease in the ratio GSH/GSSG was observed in mussels exposed to TCS and DIC in comparison to unexposed ones, revealing a general increase of the oxidative status in M. galloprovincialis exposed to those PPCPs. This ratio is considered as a reliable biomarker for monitoring the effects of xenobiotics (van der Oost et al, 2003). In the present study the ratio GSH/GSSG was also consistently lower under PPCPs exposures.…”

Section: Accepted Manuscriptsupporting

confidence: 74%

Does salinity modulates the response of Mytilus galloprovincialis exposed to triclosan and diclofenac?

Freitas

Coppola

Costa

et al. 2019

Environmental Pollution

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In the present study Mytilus galloprovincialis mussels were exposed for days to three salinities: 30 (control), 25 and 35. Simultaneously, organisms at each salinity were exposed to either the antimicrobial agent Triclosan (TCS) or the pharmaceutical drug Diclofenac (DIC) at 1 µg/L. Salinity alone and exposure to PPCPs exposures changed mussel's metabolic capacity and oxidative status, but no additive or synergetic effects resulting from the combined exposure to different stressors were observed. Overall the metabolic capacity of mussels was decreased when exposed to TCS and DIC under control salinity, which was less pronounced at salinities out of the control level. TCS had a notorious effect over glutathione peroxidase activity while DIC exposure enhanced catalase response. Such defence mechanisms were able to prevent cellular damage but still a clear reduction in GSH/GSSG ratio after PPCPs exposures indicates oxidative stress which could compromise bivalve's performance to further stressing events.

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Section: Accepted Manuscriptsupporting

confidence: 74%

Does salinity modulates the response of Mytilus galloprovincialis exposed to triclosan and diclofenac?

Freitas

Coppola

Costa

et al. 2019

Environmental Pollution

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“…Currently, the monitoring of TCS is a matter of concern and an important issue. Traditional analytical methods use gas or liquid chromatography and mass spectrometry [14][15][16][17][18][19]. However, these methods in spite of their high reliability are rather complex, time consuming and expensive [20].…”

Section: Introductionmentioning

confidence: 99%

Polyelectrolyte Based Sensors as Key to Achieve Quantitative Electronic Tongues: Detection of Triclosan on Aqueous Environmental Matrices

et al. 2020

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Triclosan (TCS) is a bacteriostatic used in household items that promotes antimicrobial resistance and endocrine disruption effects both to humans and biota, raising health concerns. In this sense, new devices for its continuous monitoring in complex matrices are needed. In this work, sensors, based on polyelectrolyte layer-by-layer (LbL) films prepared onto gold interdigitated electrodes (IDE), were studied. An electronic tongue array, composed of (polyethyleneimine (PEI)/polysodium 4-styrenesulfonate (PSS))5 and (poly(allylamine hydrochloride/graphene oxide)5 LbL films together with gold IDE without coating were used to detect TCS concentrations (10−15–10−5 M). Electrical impedance spectroscopy was used as means of transduction and the obtained data was analyzed by principal component analysis (PCA). The electronic tongue was tested in deionized water, mineral water and wastewater matrices showing its ability to (1) distinguish between TCS doped and non-doped solutions and (2) sort out the TCS range of concentrations. Regarding film stability, strong polyelectrolytes, as (PEI/PSS)n, presented more firmness and no significant desorption when immersed in wastewater. Finally, the PCA data of gold IDE and (PEI/PSS)5 sensors, for the mineral water and wastewater matrices, respectively, showed the ability to distinguish both matrices. A sensitivity value of 0.19 ± 0.02 per decade to TCS concentration and a resolution of 0.13 pM were found through the PCA second principal component.

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“…Various studies have reported TCS concentrations of 0.3 to 12.5 µg/L in domestic wastewater [41,42,70,[111][112][113][114]. Trace amounts of MeTCS in untreated wastewater have also been reported, with values between 0.015 to 1 µg/L [41,42,70,112,113].…”

Section: Fate Of Triclosan and Its Transformation/degradation Productmentioning

confidence: 99%

A Review on the Fate of Legacy and Alternative Antimicrobials and Their Metabolites during Wastewater and Sludge Treatment

Abbott

Kor-Bicakci

Islam

et al. 2020

IJMS

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Antimicrobial compounds are used in a broad range of personal care, consumer and healthcare products and are frequently encountered in modern life. The use of these compounds is being reexamined as their safety, effectiveness and necessity are increasingly being questioned by regulators and consumers alike. Wastewater often contains significant amounts of these chemicals, much of which ends up being released into the environment as existing wastewater and sludge treatment processes are simply not designed to treat many of these contaminants. Furthermore, many biotic and abiotic processes during wastewater treatment can generate significant quantities of potentially toxic and persistent antimicrobial metabolites and byproducts, many of which may be even more concerning than their parent antimicrobials. This review article explores the occurrence and fate of two of the most common legacy antimicrobials, triclosan and triclocarban, their metabolites/byproducts during wastewater and sludge treatment and their potential impacts on the environment. This article also explores the fate and transformation of emerging alternative antimicrobials and addresses some of the growing concerns regarding these compounds. This is becoming increasingly important as consumers and regulators alike shift away from legacy antimicrobials to alternative chemicals which may have similar environmental and human health concerns.

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GC/MS analysis of triclosan and its degradation by-products in wastewater and sludge samples from different treatments

Cited by 43 publications

References 43 publications

Does salinity modulates the response of Mytilus galloprovincialis exposed to triclosan and diclofenac?

Does salinity modulates the response of Mytilus galloprovincialis exposed to triclosan and diclofenac?

Polyelectrolyte Based Sensors as Key to Achieve Quantitative Electronic Tongues: Detection of Triclosan on Aqueous Environmental Matrices

A Review on the Fate of Legacy and Alternative Antimicrobials and Their Metabolites during Wastewater and Sludge Treatment

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