Progress towards the validation of modeled environmental concentrations of engineered nanomaterials by analytical measurements

Nowack, Bernd; Baalousha, Mohammed; Bornhöft, Nikolaus A.; Chaudhry, Qasim; Cornelis, Geert; Cotterill, J.; Gondikas, Andreas; Hassellöv, Martin; Lead, Jamie R.; Mitrano, Denise M.; Kammer, Frank von der; Wontner-Smith, T. J.

doi:10.1039/c5en00100e

Cited by 102 publications

(96 citation statements)

References 57 publications

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“…Furtado et al [50] investigate the persistence and transformation of silver nanoparticles in a littoral lake mesocosm Although this review focuses on ENMs, natural nanoparticles cannot be forgotten because natural nanoparticles of different or similar composition are going to be found mixed with ENPs, as in the case of environmental samples [218,219]. This means that the identification of ENPs in the presence of natural ones involves an additional challenge.…”

Section: Single-and Multi-methods Analytical Approachesmentioning

confidence: 99%

“…In any case, these techniques just provide evidence of the presence of one or more elements associated to nanoparticles and not the exact nature of such nanoparticles. Additional information and proper interpretation is needed for identifying and determining ENPs in natural samples [221], as in the case study of the release of TiO 2 ENMs from sunscreen products into surface waters [217].…”

Section: Single-and Multi-methods Analytical Approachesmentioning

confidence: 99%

See 1 more Smart Citation

Detection, characterization and quantification of inorganic engineered nanomaterials: A review of techniques and methodological approaches for the analysis of complex samples

Laborda

Bolea

Cepriá

et al. 2016

Analytica Chimica Acta

331

170

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The increasing demand of analytical information related to inorganic engineered nanomaterials requires the adaptation of existing techniques and methods, or the development of new ones.The challenge for the analytical sciences has been to consider the nanoparticles as a new sort of analytes, involving both chemical (composition, mass and number concentration) and physical information (e.g. size, shape, aggregation). Moreover, information about the species derived from the nanoparticles themselves and their transformations must also be supplied. Whereas techniques commonly used for nanoparticle characterization, such as light scattering techniques, show serious limitations when applied to complex samples, other well-established techniques, like electron microscopy and atomic spectrometry, can provide useful information in most cases. Furthermore, separation techniques, including flow field flow fractionation, capillary electrophoresis and hydrodynamic chromatography, are moving to the nano domain, mostly hyphenated to inductively coupled plasma mass spectrometry as element specific detector.Emerging techniques based on the detection of single nanoparticles by using ICP-MS, but also coulometry, are in their way to gain a position. Chemical sensors selective to nanoparticles are in their early stages, but they are very promising considering their portability and simplicity.Although the field is in continuous evolution, at this moment it is moving from proofs-of-2 concept in simple matrices to methods dealing with matrices of higher complexity and relevant analyte concentrations. To achieve this goal, sample preparation methods are essential to manage such complex situations. Apart from size fractionation methods, matrix digestion, extraction and concentration methods capable of preserving the nature of the nanoparticles are being developed. This review presents and discusses the state-of-the-art analytical techniques and sample preparation methods suitable for dealing with complex samples. Single-and multimethod approaches applied to solve the nanometrological challenges posed by a variety of stakeholders are also presented.

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Section: Single-and Multi-methods Analytical Approachesmentioning

confidence: 99%

Section: Single-and Multi-methods Analytical Approachesmentioning

confidence: 99%

Detection, characterization and quantification of inorganic engineered nanomaterials: A review of techniques and methodological approaches for the analysis of complex samples

Laborda

Bolea

Cepriá

et al. 2016

Analytica Chimica Acta

331

170

View full text Add to dashboard Cite

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“…The analysis of colloidal or NP-sized organic substances can be achieved by HPLC for fullerenes [15] and by light transmission at a wavelength of 800 nm for single wall carbon nanotubes in synthetic leachates [16]. However, routine analytical methods are still not available for organic ENPs in complex waste leachates [7].…”

Section: Concrete Productsmentioning

confidence: 99%

“…Can ENPs-containing sewage sludge contaminate agricultural soils? Papers from the Organisation for Economic Cooperation and Development (OECD) and some other studies present high quality overview of this situation, current knowledge and gaps [1][2][3][4][5][6][7][8] and with many potential occurrences and fate, many possibilities to check, but very few data. In absence of data, the precautionary principle prevails and the assessments (emission, transfer to targets, biological effects) conclude to potential high risks.…”

Section: Introductionmentioning

confidence: 99%

Mineral Nanoparticles in Waste: Potential Sources, Occurrence in Some Engineered Nanomaterials Leachates, Municipal Sewage Sludges and Municipal Landfill Sludges

Hennebert¹,

Anderson²,

Merdy³

2017

J Biotechnol Biomater

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Environmental assessment of engineered nanoparticles (ENPs) currently suffers from lack of data on production, emission, behaviour and fate in natural compartments. This paper aims to bring factual data on production amounts of ENPs and emission of mineral elements in a colloidal or nanoparticulate forms stemming from products, (e.g. cosmetics, paints, concretes) and from two potential waste sinks, namely municipal sewage sludge and nonhazardous waste landfill sludge. Based on the declaration of production and importation of ENPs in France in 2014, we set out a classification of ENPs substances comprising carbon black, organic pigments, miscellaneous organic substances and mineral ENPs. These mineral ENPs were sub-classified on the basis of production and CLP ecotoxicological and hazard classifications. Major elements (Group #1) encompass ENPs substances ubiquitous in total contents, and also as a colloid fraction in waste leachates (Si, Ca, Ti, Al, Mg, Fe, Mn, P). Minor elements were divided as ENPs with soluble substances and dissolved metal ions non-classified as ecotoxic (Group #2: Ba, Bi, Cr (III), Sr, Zr, La, Pd, Mo, W, Y, Au) or with soluble substances classified as ecotoxic and hazard statement code in the CLP regulation (Group #3: Ce, Cu, Zn, Ni, Sb, Ag, Co). Paints, concrete and particularly cosmetics proved to be sources of ENPs. Colloidal forms of elements or ENPs were found in leachate obtained from paint (Si), in cosmetics leachates (Al, Si, Ti and Zn), and in one demolition concrete (Ti). No nanoparticulate forms or fraction of Ag, Ce, Ti and Zn were identified by TEM/EDS in municipal sewage sludge. However, sewage sludge could be a sink for Group #3 elements such as Ag and Ce, since their total concentrations were significant. Based on landfill leachates from municipal solid wastes, the colloidal fraction frequently contained elements of Group #3 (Ni, Zn, Cu, Co and Sb) but with low mean concentration and more rarely Ag and Ce, indicating that the fluxes of these elements from the landfill cells should be low, except for Ce. Landfills seem to not emit ENPs in their leachates. From a regulative aspect, monitoring of Ag in sewage sludge for agricultural use could be of concern.

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“…Moreover, the techniques have to be sensitive and selective, because the concentrations of engineered NPs in the environment, including WWT plants (WWTPs), are in the ng L -1 range 8,9 , whereas the concentration of naturally occurring particles is many orders of magnitude higher and these particles sometimes contain similar elements as the NP of interest 10 . Single-particle inductively coupled plasma mass spectrometry (spICP-MS) is currently the only technique where specific analysis of number-based PSDs of NPs in environmental samples is possible 10 . The ion clouds produced by individual NP or NP aggregates in the ICP plasma are detected at a fast rate, after which the mass per ion cloud can be calculated into corresponding spherical diameters (d part ) assuming a particular composition of the NP and the number of ion clouds into c p…”

Section: Introductionmentioning

confidence: 99%

Size dependence of silver nanoparticle removal in a wastewater treatment plant mesocosm measured by FAST single particle ICP-MS

Tuoriniemi

Jürgens

Hassellöv

et al. 2017

Environ. Sci.: Nano

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The quantities of engineered nanoparticles (NP) released to the environment are often influenced by their fate in waste water treatment plants (WWTP). Here, 40 nm silver NP (AgNP) were spiked into a mesocosm simulating the process used at a major municipal WWTP. The evolution of the mass distributions and number concentrations were followed by fast acquisition speed technique single particle inductively coupled mass spectrometry (FAST spICP-MS) using a high-resolution ICP-MS. It was thus possible to detect smaller Ag containing NP than hitherto possible in similar studies. These small particles (ca. 5-10 nm in corresponding metallic Ag equivalent spherical diameter) were possibly dissolved Ag + precipitated as Ag 2 S particles. They were detected immediately upon spiking and were stable with respect to aggregation and thus much less removed by the WWTP process compared to the 40 nm AgNP. The results also suggested that any transformation of the latter AgNP occurred without dissolution. Most of these larger AgNP were probably removed by aggregation with large floc particles and subsequent sedimentation with the suspended particulate matter in the simulated WWTP process. The results have implications for differentiating the fate of nanoparticles as a function of size and demonstrate how spICP-MS can reveal such size-dependent fate dynamics. Environmental Significance StatementThe size distributions of Ag nanoparticles during simulated waste water treatment were followed by FAST spICP-MS. The high sensitivity allowed to detect particles with an Ag mass as small as ca. 5 nm in corresponding metallic Ag equivalent spherical diameter. These small particles were contrary to expectations stable with respect to aggregation with suspended particulate matter.

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Progress towards the validation of modeled environmental concentrations of engineered nanomaterials by analytical measurements

Cited by 102 publications

References 57 publications

Detection, characterization and quantification of inorganic engineered nanomaterials: A review of techniques and methodological approaches for the analysis of complex samples

Detection, characterization and quantification of inorganic engineered nanomaterials: A review of techniques and methodological approaches for the analysis of complex samples

Mineral Nanoparticles in Waste: Potential Sources, Occurrence in Some Engineered Nanomaterials Leachates, Municipal Sewage Sludges and Municipal Landfill Sludges

Size dependence of silver nanoparticle removal in a wastewater treatment plant mesocosm measured by FAST single particle ICP-MS

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