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Influence of relative humidity and physical load during storage on dustiness of inorganic nanomaterials: implications for testing and risk assessment

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Influence of relative humidity and physical load during storage on dustiness of inorganic nanomaterials : implications for testing and risk assessment. / Levin, Marcus; Rojas, Elena; Vanhala, Esa; Vippola, Minnamari; Liguori, Biase; Kling, Kirsten I.; Koponen, Ismo K.; Mølhave, Kristian; Tuomi, Timo; Gregurec, Danijela; Moya, Sergio; Jensen, Keld A.

In: Journal of Nanoparticle Research, Vol. 17, No. 8, 337, 14.08.2015.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Levin, M, Rojas, E, Vanhala, E, Vippola, M, Liguori, B, Kling, KI, Koponen, IK, Mølhave, K, Tuomi, T, Gregurec, D, Moya, S & Jensen, KA 2015, 'Influence of relative humidity and physical load during storage on dustiness of inorganic nanomaterials: implications for testing and risk assessment', Journal of Nanoparticle Research, vol. 17, no. 8, 337. https://doi.org/10.1007/s11051-015-3139-6

APA

Levin, M., Rojas, E., Vanhala, E., Vippola, M., Liguori, B., Kling, K. I., ... Jensen, K. A. (2015). Influence of relative humidity and physical load during storage on dustiness of inorganic nanomaterials: implications for testing and risk assessment. Journal of Nanoparticle Research, 17(8), [337]. https://doi.org/10.1007/s11051-015-3139-6

Vancouver

Author

Levin, Marcus ; Rojas, Elena ; Vanhala, Esa ; Vippola, Minnamari ; Liguori, Biase ; Kling, Kirsten I. ; Koponen, Ismo K. ; Mølhave, Kristian ; Tuomi, Timo ; Gregurec, Danijela ; Moya, Sergio ; Jensen, Keld A. / Influence of relative humidity and physical load during storage on dustiness of inorganic nanomaterials : implications for testing and risk assessment. In: Journal of Nanoparticle Research. 2015 ; Vol. 17, No. 8.

Bibtex - Download

@article{6105bd3cc3cf47f8bb1e67c380ca7c0e,
title = "Influence of relative humidity and physical load during storage on dustiness of inorganic nanomaterials: implications for testing and risk assessment",
abstract = "Dustiness testing using a down-scaled EN15051 rotating drum was used to investigate the effects of storage conditions such as relative humidity and physical loading on the dustiness of five inorganic metal oxide nanostructured powder materials. The tests consisted of measurements of gravimetrical respirable dustiness index and particle size distributions. Water uptake of the powders during 7 days of incubation was investigated as an explanatory factor of the changes. Consequences of these varying storage conditions in exposure modelling were tested using the control banding and risk management tool NanoSafer. Drastic material-specific effects on powder respirable dustiness index were observed with the change in TiO2 from 30 {\%} RH (639 mg/kg) to 50 {\%} RH (1.5 mg/kg). All five tested materials indicate a decreasing dustiness index with relative humidity increasing from 30 to 70 {\%} RH. Test of powder water uptake showed an apparent link with the decreasing dustiness index. Effects of powder compaction appeared more material specific with both increasing and decreasing dustiness indices observed as an effect of compaction. Tests of control banding exposure models using the measured dustiness indices in three different exposure scenarios showed that in two of the tested materials, one 20 {\%} change in RH changed the exposure banding from the lowest level to the highest. The study shows the importance of powder storage conditions prior to tests for classification of material dustiness indices. It also highlights the importance of correct storage information and relative humidity and expansion of the dustiness test conditions specifically, when using dustiness indices as a primary parameter for source strength in exposure assessment.",
keywords = "Dustiness, Exposure assessment, Nanotechnology, Occupational health, Powder storage, Rotating drum",
author = "Marcus Levin and Elena Rojas and Esa Vanhala and Minnamari Vippola and Biase Liguori and Kling, {Kirsten I.} and Koponen, {Ismo K.} and Kristian M{\o}lhave and Timo Tuomi and Danijela Gregurec and Sergio Moya and Jensen, {Keld A.}",
year = "2015",
month = "8",
day = "14",
doi = "10.1007/s11051-015-3139-6",
language = "English",
volume = "17",
journal = "Journal of Nanoparticle Research",
issn = "1388-0764",
publisher = "Springer Verlag",
number = "8",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Influence of relative humidity and physical load during storage on dustiness of inorganic nanomaterials

T2 - implications for testing and risk assessment

AU - Levin, Marcus

AU - Rojas, Elena

AU - Vanhala, Esa

AU - Vippola, Minnamari

AU - Liguori, Biase

AU - Kling, Kirsten I.

AU - Koponen, Ismo K.

AU - Mølhave, Kristian

AU - Tuomi, Timo

AU - Gregurec, Danijela

AU - Moya, Sergio

AU - Jensen, Keld A.

PY - 2015/8/14

Y1 - 2015/8/14

N2 - Dustiness testing using a down-scaled EN15051 rotating drum was used to investigate the effects of storage conditions such as relative humidity and physical loading on the dustiness of five inorganic metal oxide nanostructured powder materials. The tests consisted of measurements of gravimetrical respirable dustiness index and particle size distributions. Water uptake of the powders during 7 days of incubation was investigated as an explanatory factor of the changes. Consequences of these varying storage conditions in exposure modelling were tested using the control banding and risk management tool NanoSafer. Drastic material-specific effects on powder respirable dustiness index were observed with the change in TiO2 from 30 % RH (639 mg/kg) to 50 % RH (1.5 mg/kg). All five tested materials indicate a decreasing dustiness index with relative humidity increasing from 30 to 70 % RH. Test of powder water uptake showed an apparent link with the decreasing dustiness index. Effects of powder compaction appeared more material specific with both increasing and decreasing dustiness indices observed as an effect of compaction. Tests of control banding exposure models using the measured dustiness indices in three different exposure scenarios showed that in two of the tested materials, one 20 % change in RH changed the exposure banding from the lowest level to the highest. The study shows the importance of powder storage conditions prior to tests for classification of material dustiness indices. It also highlights the importance of correct storage information and relative humidity and expansion of the dustiness test conditions specifically, when using dustiness indices as a primary parameter for source strength in exposure assessment.

AB - Dustiness testing using a down-scaled EN15051 rotating drum was used to investigate the effects of storage conditions such as relative humidity and physical loading on the dustiness of five inorganic metal oxide nanostructured powder materials. The tests consisted of measurements of gravimetrical respirable dustiness index and particle size distributions. Water uptake of the powders during 7 days of incubation was investigated as an explanatory factor of the changes. Consequences of these varying storage conditions in exposure modelling were tested using the control banding and risk management tool NanoSafer. Drastic material-specific effects on powder respirable dustiness index were observed with the change in TiO2 from 30 % RH (639 mg/kg) to 50 % RH (1.5 mg/kg). All five tested materials indicate a decreasing dustiness index with relative humidity increasing from 30 to 70 % RH. Test of powder water uptake showed an apparent link with the decreasing dustiness index. Effects of powder compaction appeared more material specific with both increasing and decreasing dustiness indices observed as an effect of compaction. Tests of control banding exposure models using the measured dustiness indices in three different exposure scenarios showed that in two of the tested materials, one 20 % change in RH changed the exposure banding from the lowest level to the highest. The study shows the importance of powder storage conditions prior to tests for classification of material dustiness indices. It also highlights the importance of correct storage information and relative humidity and expansion of the dustiness test conditions specifically, when using dustiness indices as a primary parameter for source strength in exposure assessment.

KW - Dustiness

KW - Exposure assessment

KW - Nanotechnology

KW - Occupational health

KW - Powder storage

KW - Rotating drum

UR - http://www.scopus.com/inward/record.url?scp=84939162642&partnerID=8YFLogxK

U2 - 10.1007/s11051-015-3139-6

DO - 10.1007/s11051-015-3139-6

M3 - Article

VL - 17

JO - Journal of Nanoparticle Research

JF - Journal of Nanoparticle Research

SN - 1388-0764

IS - 8

M1 - 337

ER -