Effect of soil sorption and aquatic natural organic matter on the antibacterial activity of a fullerene water suspension

Liu, Dong; Lyon, Delina Y.; Li, Qilin; Alvarez, Pedro J. J.

doi:10.1897/07-548.1

Cited by 134 publications

(84 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Both C 60 and nC 60 resulted in limited alteration to either the function or structure of microbial processes or communities (Tong et al, 2007). These findings are similar to those of Johansen et al (2008), and consistent with other investigations in which the bioavailability and antibacterial activity of nC 60 reportedly diminished following sorption to soil, with the overall sorption capacity dictated by the soil OM content (Li et al, 2008).…”

Section: Cnm Toxicity To Soil Microorganismssupporting

confidence: 87%

Carbon nanomaterials in clean and contaminated soils: environmental implications and applications

Riding

Martin

Jones

et al. 2015

SOIL

View full text Add to dashboard Cite

Abstract. The exceptional sorptive ability of carbon nanomaterials (CNMs) for hydrophobic organic contaminants (HOCs) is driven by their characteristically large reactive surface areas and highly hydrophobic nature. Given these properties, it is possible for CNMs to impact on the persistence, mobility and bioavailability of contaminants within soils, either favourably through sorption and sequestration, hence reducing their bioavailability, or unfavourably through increasing contaminant dispersal. This review considers the complex and dynamic nature of both soil and CNM physicochemical properties to determine their fate and behaviour, together with their interaction with contaminants and the soil microflora. It is argued that assessment of CNMs within soil should be conducted on a case-by-case basis and further work to assess the long-term stability and toxicity of sorbed contaminants, as well as the toxicity of CNMs themselves, is required before their sorptive abilities can be applied to remedy environmental issues.

show abstract

Section: Cnm Toxicity To Soil Microorganismssupporting

confidence: 87%

Carbon nanomaterials in clean and contaminated soils: environmental implications and applications

Riding

Martin

Jones

et al. 2015

SOIL

View full text Add to dashboard Cite

show abstract

“…For example, dissolved organic matter can be critical in controlling metal bioavailability to aquatic organisms [27]. Conversely, humic and fulvic acids are also known to reduce the toxicity of ENMs [28,29] and slow the dissolution of metal-based ENMs [30]. Moreover, natural dispersants are usually not well characterized, and the properties of natural organic matter often used in ENM experiments, such as Suwannee River humic acid, may not be representative of the wide range of organic matter in different environments.…”

Section: Dispersing Agents and Solvent Controlsmentioning

confidence: 99%

Ecotoxicity test methods for engineered nanomaterials: Practical experiences and recommendations from the bench

Handy

Cornelis

Fernandes

et al. 2011

Environmental Toxicology and Chemistry

303

236

View full text Add to dashboard Cite

Abstract-Ecotoxicology research is using many methods for engineered nanomaterials (ENMs), but the collective experience from researchers has not been documented. This paper reports the practical issues for working with ENMs and suggests nano-specific modifications to protocols. The review considers generic practical issues, as well as specific issues for aquatic tests, marine grazers, soil organisms, and bioaccumulation studies. Current procedures for cleaning glassware are adequate, but electrodes are problematic. The maintenance of exposure concentration is challenging, but can be achieved with some ENMs. The need to characterize the media during experiments is identified, but rapid analytical methods are not available to do this. The use of sonication and natural/synthetic dispersants are discussed. Nano-specific biological endpoints may be developed for a tiered monitoring scheme to diagnose ENM exposure or effect. A case study of the algal growth test highlights many small deviations in current regulatory test protocols that are allowed (shaking, lighting, mixing methods), but these should be standardized for ENMs. Invertebrate (Daphnia) tests should account for mechanical toxicity of ENMs. Fish tests should consider semistatic exposure to minimize wastewater and animal husbandry. The inclusion of a benthic test is recommended for the base set of ecotoxicity tests with ENMs. The sensitivity of soil tests needs to be increased for ENMs and shortened for logistics reasons; improvements include using Caenorhabditis elegans, aquatic media, and metabolism endpoints in the plant growth tests. The existing bioaccumulation tests are conceptually flawed and require considerable modification, or a new test, to work for ENMs. Overall, most methodologies need some amendments, and recommendations are made to assist researchers. Environ. Toxicol. Chem. 2012;31:15-31. # 2011 SETAC

show abstract

“…Studies have shown that NPs undergo a series of chemical conversions, including chemical adsorption of toxic metal anions, complexation of organic molecules, and subsequent dissolution [41][42][43]. In addition, NP aging (weathering) affects dissolution and reactivity [13,44,45]. Previously, we reported that ZnO NPs undergo a dramatic physicochemical transformation with aging [22].…”

Section: Discussionmentioning

confidence: 97%

Natural Transformation of Zinc Oxide Nanoparticles and Their Cytotoxicity and Mutagenicity

Wang

Cao

et al. 2017

Journal of Nanomaterials

View full text Add to dashboard Cite

With rapid development of the nanoindustry, studies focusing on the transformation of nanoparticles (NPs) are required to understand their stability and toxicity after being released into the environment. Here, we characterized the physicochemical properties of ZnO NPs and found that they are naturally alkalized in the presence of air (without the addition of exogenous alkaline substances). Energy dispersive X-ray/X-ray powder diffraction/Fourier transform infrared (EDX/XRD/FTIR)/Raman spectroscopy gave evidence for the formation of hydrozincite (Zn 5 (CO 3 ) 2 (OH) 6 ) and zinc hydroxide (Zn(OH) 2 ). Further, we comparatively evaluated the cellular toxicity of pristine and alkalized ZnO NPs. Cell viability testing (colony formation) showed that alkalization time-dependently decreased cytotoxicity. Alkalized NPs exhibited mutagenicity at multiple concentrations, as shown by a CD59 gene loci mutation assay. Variations in toxicity were associated with the chemical transformation of ZnO NPs, and Zn 2+ played a key role in the mutagenicity of alkalized NPs. These results indicate that NPs are chemically transformed in the environment. These transformations result in obvious variations in toxicity, suggesting that the NP transformation process should be considered more thoroughly when evaluating toxicity.

show abstract

Effect of soil sorption and aquatic natural organic matter on the antibacterial activity of a fullerene water suspension

Cited by 134 publications

References 27 publications

Carbon nanomaterials in clean and contaminated soils: environmental implications and applications

Carbon nanomaterials in clean and contaminated soils: environmental implications and applications

Ecotoxicity test methods for engineered nanomaterials: Practical experiences and recommendations from the bench

Natural Transformation of Zinc Oxide Nanoparticles and Their Cytotoxicity and Mutagenicity

Contact Info

Product

Resources

About