Searched for: author%3A%22Peters%2C+R.J.B.%22
(1 - 10 of 10)
document
Peters, R.J.B. (author), Oomen, A.G. (author), van Bemmel, G. (author), van Vliet, L. (author), Undas, A.K. (author), Munniks, S. (author), Bleys, R.L.A.W. (author), Tromp, P.C. (author), Brand, W. (author), van der Lee, M. (author)
Silicon dioxide (silica, SiO2, SAS) and titanium dioxide (TiO2) are produced in high volumes and applied in many consumer and food products. As a consequence, there is a potential human exposure and subsequent systemic uptake of these particles. In this study we show the characterization and quantification of both total silicon (Si) and titanium...
article 2020
document
Heringa, M.B. (author), Peters, R.J.B. (author), Bleys, R.L.A.W. (author), van der Lee, M.K. (author), Tromp, P.C. (author), van Kesteren, P.C.E. (author), van Eijkeren, J.C.H. (author), Undas, A.K. (author), Oomen, A.G. (author), Bouwmeester, H. (author)
Background: Titanium dioxide (TiO2) is produced at high volumes and applied in many consumer and food products. Recent toxicokinetic modelling indicated the potential of TiO2 to accumulate in human liver and spleen upon daily oral exposure, which is not routinely investigated in chronic animal studies. A health risk from nanosized TiO2 particle...
article 2018
document
Helsper, J.P.F.G. (author), Peters, R.J.B. (author), van Bemmel, M.E.M. (author), Rivera, Z.E.H. (author), Wagner, S. (author), von der Kammer, F. (author), Tromp, P.C. (author), Hofmann, T. (author), Weigel, S. (author)
Seven commercial titanium dioxide pigments and two other well-defined TiO2 materials (TiMs) were physicochemically characterised using asymmetric flow field flow fractionation (aF4) for separation, various techniques to determine size distribution and inductively coupled plasma mass spectrometry (ICPMS) for chemical characterization. The aF4...
article 2016
document
van der Ploeg, M.J.C. (author), Handy, R.D. (author), Waalewijn-Kool, P.L. (author), van den Berg, J.H.J. (author), Herrera Rivera, Z.E. (author), Bovenschen, J. (author), Molleman, B. (author), Baveco, J.M. (author), Tromp, P. (author), Peters, R.J.B. (author), Koopmans, G.F. (author), Rietjens, I.M.C.M. (author), van den Brink, N.W. (author)
The impact of silver nanoparticles (AgNP; at 0mg Ag/kg, 1.5mg Ag/kg, 15.4mg Ag/kg, and 154mg Ag/kg soil) and silver nitrate (AgNO3; 15.4mg Ag/kg soil) on earthworms, Lumbricus rubellus, was assessed. A 4-wk exposure to the highest AgNP treatment reduced growth and reproduction compared with the control. Silver nitrate (AgNO3) exposure also...
article 2014
document
Peters, R.J.B. (author), van Bemmel, G. (author), Herrera-Rivera, Z. (author), Helsper, H.P.F.G. (author), Marvin, H.J.P. (author), Weigel, S. (author), Tromp, P.C. (author), Oomen, A.G. (author), Rietveld, A.G. (author), Bouwmeester, H. (author)
Titanium dioxide (TiO2) is a common food additive used to enhance the white color, brightness, and sometimes flavor of a variety of food products. In this study 7 food grade TiO2 materials (E171), 24 food products, and 3 personal care products were investigated for their TiO 2 content and the number-based size distribution of TiO2 particles...
article 2014
document
van der Zande, M. (author), Vandebriel, R.J. (author), Groot, M.J. (author), Kramer, E. (author), Herrera Rivera, Z.E. (author), Rasmussen, K. (author), Ossenkoppele, J.S. (author), Tromp, P. (author), Gremmer, E.R. (author), Peters, R.J.B. (author), Hendriksen, P.J. (author), Marvin, H.J.P. (author), Hoogenboom, R.L.A.P. (author), Peijnenburg, A.A.C.M. (author), Bouwmeester, H. (author)
Background: Synthetic Amorphous Silica (SAS) is commonly used in food and drugs. Recently, a consumer intake of silica from food was estimated at 9.4 mg/kg bw/day, of which 1.8 mg/kg bw/day was estimated to be in the nano-size range. Food products containing SAS have been shown to contain silica in the nanometer size range (i.e. 5 - 200 nm) up...
article 2014
document
Peters, R.J.B. (author), Beeltje, H. (author), van Delft, R.J. (author), TNO Bouw en Ondergrond (author)
The exposure to some chemicals can lead to hormone disrupting effects. Presently, much attention is focused on so-called xeno-estrogens, synthetic compounds that interact with hormone receptors causing a number of reactions that eventually lead to effects related to reproduction and development. The current study was initiated to investigate the...
article 2008
document
TNO Milieu, Energie en Procesinnovatie (author), Peters, R.J.B. (author)
report 2003
document
Peters, R.J.B. (author), van Renesse van Duivenbode, J.A.D. (author)
A method for the analyses of pyridine in environmental samples is described. For soil samples a distillation procedure followed by an extraction, an acidic extraction or a Soxhlet extraction can be used. For water samples a distillation procedure followed by extraction can be employed. Deuterated pyridine is used as an internal standard and the...
article 1994
document
Wieling, J. (author), Bakkeren, H.A. (author), Peters, R.J.B. (author), van Gils, W.J.C.G. (author), de Leer, E.W.B. (author), Mulder, S.A. (author), van der Burg, P.A. (author), van Renesse van Duivenbode, J.A.D. (author), Instituut voor Milieuwetenschappen TNO (author)
In analytical research laboratories, the problem of quality assurance is more difficult to solve than in laboratories devoted exclusively to routine analysis: the former usually have to deal with a much greater variety of samples and may have to develop entirely new methods of analysis. For research laboratories we have developed several...
article 1994
Searched for: author%3A%22Peters%2C+R.J.B.%22
(1 - 10 of 10)