Bioavailability and detoxification of cationics: I. Algal toxicity of alkyltrimethyl ammonium salts in the presence of suspended sediment and humic acid

Wijk, Dolf Van; Bos, Mirjam Gyimesi-van den; Garttener-Arends, Irmgard; Geurts, Marc; Kamstra, Jorke H.; Thomas, Paul

doi:10.1016/j.chemosphere.2008.12.047

Cited by 37 publications

(34 citation statements)

References 22 publications

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“…Non-specific interactions between the alga and TX are stronger than those involving SDS because of the greater hydrophobicity of the non-ionic molecule (Table 1). In contrast, binding of HDTMA involves both ion exchange and non-specific interactions and is, therefore, more heterogeneous but highly favourable (Jones-Hughes and Turner 2005;van Wijk et al 2009). …”

Section: Relative Toxicities Of the Surfactantsmentioning

confidence: 92%

“…Although the sorption of the surfactants was not determined, it most likely involves non-specific (e.g. hydrophobic) interactions between the hydrophobe and apolar sites of the algal cell wall, and electrostatic attraction between the hydrophile and polar moieties of surface functional groups (van Wijk et al 2009). Thus, the ionic head of SDS is repelled by the net negative charge of the algal surface and sorption is limited to nonspecific interactions between the alkyl tail of the surfactant and neutral regions of the algal surface.…”

Section: Relative Toxicities Of the Surfactantsmentioning

confidence: 99%

“…Because of their ability to withstand moderately polluted conditions and accumulate many contaminants, Ulva species are considered to be useful biomonitors and important test organisms in ecotoxicological studies (Haritonidis andMalea 1999, Lee andWang 2001;Han et al 2009;Masakorala et al 2008;Turner et al 2009). We used chlorophyll a fluorescence quenching as a noninvasive measure of toxicity in our experiments because of its ease of measurement and sensitivity with respect to algal-surfactant interactions (Pérez et al 2009;van Wijk et al 2009). …”

Section: Introductionmentioning

confidence: 99%

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Toxicity of Synthetic Surfactants to the Marine Macroalga, Ulva lactuca

Masakorala

Turner

Brown

2010

Water Air Soil Pollut

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The toxicities of three synthetic surfactants to the marine macroalga, Ulva lactuca, have been examined by monitoring chlorophyll a fluorescence quenching. The anionic surfactant, sodium dodecyl sulphate (SDS), exerted no measurable toxicity over the concentration range 0-10 mg L −1 , while presence of the non-ionic surfactant, Triton X-100 (TX), elicited a small reduction in photochemical efficiency that was independent of concentration. The cationic surfactant, hexadecyltrimethylammonium bromide (HDTMA), incurred a dose-dependent response to ∼3 mg L −1 (EC 50 =2.4 mg L −1 ), but a reduction in toxicity thereafter. Presence of TX had little effect on the toxicity of HDTMA but an equimolar concentration of SDS directly offset the impact of HDTMA on photochemical efficiency. Relative toxicities of the surfactants are attributed to differences in affinity for the algal surface and tendencies to disrupt cell membranes and interact with intracellular macromolecules. Non-linear dose responses and antagonistic effects are attributed to non-specific interactions between molecules of the same surfactant and electrostatic interactions between molecules of different amphiphilic character.

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Section: Relative Toxicities Of the Surfactantsmentioning

confidence: 92%

Section: Relative Toxicities Of the Surfactantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Toxicity of Synthetic Surfactants to the Marine Macroalga, Ulva lactuca

Masakorala

Turner

Brown

2010

Water Air Soil Pollut

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“…By contrast, 4-NP cannot be enriched in liver at any time while MMT exists. 30). The data analysis showed that whether with or without MMT, the concentration of 4-NP in liver has been on the decline over time.…”

Section: The Determination Results and Data Analysis Of 4-np In Tissuesmentioning

confidence: 99%

Effect of Montmorillonite on Nonylphenol Enrichment in Zebrafish

Qian¹,

Xiao-feng²,

Sun³

et al. 2018

Preprint

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Abstract:The aim of this study was to investigate the effect of montmorillonite on nonylphenol (4-nonylphenol, 4-NP) enrichment in a zebrafish model. The AB strain zebrafish were used as the animal subjects, and three concentration gradients were set for both nonylphenol and montmorillonite, according to their actual concentrations in aquaculture water in Huzhou City. A group treated with nonylphenol alone was also set, adding up to 12 experimental groups. Concentrations of nonylphenol enriched in the liver, muscle and gills of zebrafish were detected by solid phase microextraction-high performance liquid chromatography at Days 7, 15 and 30, respectively. Additionally, the relative enzymatic activity of superoxide dismutase (SOD) and the glutathione S-transferase (GST) were also detected, and the data were statistically analyzed. The results showed that the concentrations of nonylphenol in zebrafish peaked at Day 7 and gradually decreased afterwards for all the experimental groups. The montmorillonite reduces short-term accumulation of nonylphenol in gills, and the high concentration of nonylphenol facilitates its enrichment in liver and muscle, while the low concentration of nonylphenol does not. Meanwhile, the low concentration of nonylphenol in liver exerts an influence on the inductive effect of SOD and GST, while the high concentration of nonylphenol shows the inhibiting effect of SOD and GST.

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“…Therefore, OM has been extensively studied as a sorbent in soil remediation involving stabilization/immobilization and/or detoxification [17][18][19][20]. For instance, humic acids (HA), the most abundant fraction of decomposed OM, can be used in metal immobilization [21,22]. In addition, application of HA in metals contaminated soils promotes redistribution of metals into less available fractions mitigating metal bioavailability [20,23].…”

Section: Introductionmentioning

confidence: 99%