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Speciation and lability of Ag-, AgCl-, and Ag<inf>2</inf>S-nanoparticles in soil determined by X-ray absorption spectroscopy and diffusive gradients in thin films

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Speciation and lability of Ag-, AgCl-, and Ag<inf>2</inf>S-nanoparticles in soil determined by X-ray absorption spectroscopy and diffusive gradients in thin films. / Sekine, R.; Brunetti, G.; Donner, E.; Khaksar, M.; Vasilev, K.; Jämting, Å. K. ; Scheckel, Kirk G.; Kappen, P.; Zhang, Hao; Lombi, Enzo.

In: Environmental Science and Technology, Vol. 49, No. 2, 20.01.2015, p. 897-905.

Research output: Contribution to journalJournal article

Harvard

Sekine, R, Brunetti, G, Donner, E, Khaksar, M, Vasilev, K, Jämting, ÅK, Scheckel, KG, Kappen, P, Zhang, H & Lombi, E 2015, 'Speciation and lability of Ag-, AgCl-, and Ag<inf>2</inf>S-nanoparticles in soil determined by X-ray absorption spectroscopy and diffusive gradients in thin films', Environmental Science and Technology, vol. 49, no. 2, pp. 897-905. https://doi.org/10.1021/es504229h

APA

Sekine, R., Brunetti, G., Donner, E., Khaksar, M., Vasilev, K., Jämting, Å. K., Scheckel, K. G., Kappen, P., Zhang, H., & Lombi, E. (2015). Speciation and lability of Ag-, AgCl-, and Ag<inf>2</inf>S-nanoparticles in soil determined by X-ray absorption spectroscopy and diffusive gradients in thin films. Environmental Science and Technology, 49(2), 897-905. https://doi.org/10.1021/es504229h

Vancouver

Sekine R, Brunetti G, Donner E, Khaksar M, Vasilev K, Jämting ÅK et al. Speciation and lability of Ag-, AgCl-, and Ag<inf>2</inf>S-nanoparticles in soil determined by X-ray absorption spectroscopy and diffusive gradients in thin films. Environmental Science and Technology. 2015 Jan 20;49(2):897-905. https://doi.org/10.1021/es504229h

Author

Sekine, R. ; Brunetti, G. ; Donner, E. ; Khaksar, M. ; Vasilev, K. ; Jämting, Å. K. ; Scheckel, Kirk G. ; Kappen, P. ; Zhang, Hao ; Lombi, Enzo. / Speciation and lability of Ag-, AgCl-, and Ag<inf>2</inf>S-nanoparticles in soil determined by X-ray absorption spectroscopy and diffusive gradients in thin films. In: Environmental Science and Technology. 2015 ; Vol. 49, No. 2. pp. 897-905.

Bibtex

@article{2fc3b81b54a04e3f8a8b44ce8b45e10e,
title = "Speciation and lability of Ag-, AgCl-, and Ag2S-nanoparticles in soil determined by X-ray absorption spectroscopy and diffusive gradients in thin films",
abstract = "Long-term speciation and lability of silver (Ag-), silver chloride (AgCl-), and silver sulfide nanoparticles (Ag2S-NPs) in soil were studied by X-ray absorption spectroscopy (XAS), and newly developed “nano” Diffusive Gradients in Thin Films (DGT) devices. These nano-DGT devices were designed specifically to avoid confounding effects when measuring element lability in the presence of nanoparticles. The aging profile and stabilities of the three nanoparticles and AgNO3 (ionic Ag) in soil were examined at three different soil pH values over a period of up to 7 months. Transformation of ionic Ag, Ag-NP and AgCl-NPs were dependent on pH. AgCl formation and persistence was observed under acidic conditions, whereas sulfur-bound forms of Ag dominated in neutral to alkaline soils. Ag2S-NPs were found to be very stable under all conditions tested and remained sulfur bound after 7 months of incubation. Ag lability was characteristically low in soils containing Ag2S-NPs. Other forms of Ag were linked to higher DGT-determined lability, and this varied as a function of aging and related speciation changes as determined by XAS. These results clearly indicate that Ag2S-NPs, which are the most environmentally relevant form of Ag that enter soils, are chemically stable and have profoundly low Ag lability over extended periods. This may minimize the long-term risks of Ag toxicity in the soil environment.",
author = "R. Sekine and G. Brunetti and E. Donner and M. Khaksar and K. Vasilev and J{\"a}mting, {{\AA}. K.} and Scheckel, {Kirk G.} and P. Kappen and Hao Zhang and Enzo Lombi",
year = "2015",
month = jan,
day = "20",
doi = "10.1021/es504229h",
language = "English",
volume = "49",
pages = "897--905",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "2",

}

RIS

TY - JOUR

T1 - Speciation and lability of Ag-, AgCl-, and Ag2S-nanoparticles in soil determined by X-ray absorption spectroscopy and diffusive gradients in thin films

AU - Sekine, R.

AU - Brunetti, G.

AU - Donner, E.

AU - Khaksar, M.

AU - Vasilev, K.

AU - Jämting, Å. K.

AU - Scheckel, Kirk G.

AU - Kappen, P.

AU - Zhang, Hao

AU - Lombi, Enzo

PY - 2015/1/20

Y1 - 2015/1/20

N2 - Long-term speciation and lability of silver (Ag-), silver chloride (AgCl-), and silver sulfide nanoparticles (Ag2S-NPs) in soil were studied by X-ray absorption spectroscopy (XAS), and newly developed “nano” Diffusive Gradients in Thin Films (DGT) devices. These nano-DGT devices were designed specifically to avoid confounding effects when measuring element lability in the presence of nanoparticles. The aging profile and stabilities of the three nanoparticles and AgNO3 (ionic Ag) in soil were examined at three different soil pH values over a period of up to 7 months. Transformation of ionic Ag, Ag-NP and AgCl-NPs were dependent on pH. AgCl formation and persistence was observed under acidic conditions, whereas sulfur-bound forms of Ag dominated in neutral to alkaline soils. Ag2S-NPs were found to be very stable under all conditions tested and remained sulfur bound after 7 months of incubation. Ag lability was characteristically low in soils containing Ag2S-NPs. Other forms of Ag were linked to higher DGT-determined lability, and this varied as a function of aging and related speciation changes as determined by XAS. These results clearly indicate that Ag2S-NPs, which are the most environmentally relevant form of Ag that enter soils, are chemically stable and have profoundly low Ag lability over extended periods. This may minimize the long-term risks of Ag toxicity in the soil environment.

AB - Long-term speciation and lability of silver (Ag-), silver chloride (AgCl-), and silver sulfide nanoparticles (Ag2S-NPs) in soil were studied by X-ray absorption spectroscopy (XAS), and newly developed “nano” Diffusive Gradients in Thin Films (DGT) devices. These nano-DGT devices were designed specifically to avoid confounding effects when measuring element lability in the presence of nanoparticles. The aging profile and stabilities of the three nanoparticles and AgNO3 (ionic Ag) in soil were examined at three different soil pH values over a period of up to 7 months. Transformation of ionic Ag, Ag-NP and AgCl-NPs were dependent on pH. AgCl formation and persistence was observed under acidic conditions, whereas sulfur-bound forms of Ag dominated in neutral to alkaline soils. Ag2S-NPs were found to be very stable under all conditions tested and remained sulfur bound after 7 months of incubation. Ag lability was characteristically low in soils containing Ag2S-NPs. Other forms of Ag were linked to higher DGT-determined lability, and this varied as a function of aging and related speciation changes as determined by XAS. These results clearly indicate that Ag2S-NPs, which are the most environmentally relevant form of Ag that enter soils, are chemically stable and have profoundly low Ag lability over extended periods. This may minimize the long-term risks of Ag toxicity in the soil environment.

U2 - 10.1021/es504229h

DO - 10.1021/es504229h

M3 - Journal article

VL - 49

SP - 897

EP - 905

JO - Environmental Science and Technology

JF - Environmental Science and Technology

SN - 0013-936X

IS - 2

ER -