Presence of Nanoparticles in Wash Water from Conventional Silver and Nano-silver Textiles

被引:214
作者
Mitrano, Denise M. [1 ]
Rimmele, Elisa [1 ]
Wichser, Adrian [2 ]
Erni, Rolf [3 ]
Height, Murray [4 ]
Nowack, Bernd [1 ]
机构
[1] Empa, Swiss Fed Labs Mat Sci & Technol, Technol & Soc Lab, CH-9014 St Gallen, Switzerland
[2] Empa, Swiss Fed Labs Mat Sci & Technol, Analyt Chem Lab, CH-8600 Dubendorf, Switzerland
[3] Empa, Swiss Fed Labs Mat Sci & Technol, Electron Microscopy Ctr, CH-8600 Dubendorf, Switzerland
[4] HeiQ Mat AG, CH-5330 Bad Zurzach, Switzerland
关键词
nanoparticle release; Ag nanoparticles; transformation; textile; washing; aging; CONSUMER PRODUCTS; RELEASE; DISSOLUTION; CORROSION; SULFIDATION; NANOSILVER; ANTIMICROBIALS; SPECIATION; REDUCTION; EXPOSURE;
D O I
10.1021/nn502228w
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Questions about how to regulate nanoenhanced products regularly arise as researchers determine possible nanoparticle transformation(s). Focusing concern on the incorporation and subsequent release of nano-Ag in fabrics often overshadows the fact that many "conventional silver" antimicrobials such as ionic silver, AgCl, metallic Ag, and other forms will also form different species of silver. In this study we used a laboratory washing machine to simulate the household laundering of a number of textiles prepared with known conventional Ag or nano-Ag treatments and a commercially available fabric incorporating yams coated with bulk metallic Ag. Serial filtration allowed for quantification of total Ag released in various size fractions (>0.45 mu m, < 0.45 mu m, <0.1 mu m, and <10 kDa), while characterization of particles with TEM/EDX provided insight on Ag transformation mechanisms. Most conventional Ag additives yielded more total Ag and more nanoparticulate-sized Ag in the washing liquid than fabrics that used nano-Ag treatments. Incorporating nano-silver into the fiber (as opposed to surface treatments) yielded less total Ag during fabric washing. A variety of metallic Ag, AgCl, and Ag/S particles were observed in washing solution by TEM/EDX to various extents depending on the Initial Ag speciation in the fabrics. Very similar particles were also observed when dissolved ionic Ag was added directly into the washing liquid. On the basis of the present study, we can state that all silver-treated textiles, regardless of whether the treatment is "conventional" or "nano", can be a source of silver nanoparticles in washing solution when laundering fabrics. Indeed, in this study we observed that textiles treated with "conventional" silver have equal or greater propensity to form nano-silver particles during washing conditions than those treated with "nano"-silver. This fact needs to be strongly considered when addressing the risks of nano-silver and emphasizes that regulatory assessment of nano-silver warrants a similar approach to conventional silver.
引用
收藏
页码:7208 / 7219
页数:12
相关论文
共 44 条
[1]   Humic Acid-Induced Silver Nanoparticle Formation Under Environmentally Relevant Conditions [J].
Akaighe, Nelson ;
MacCuspie, Robert I. ;
Navarro, Divina A. ;
Aga, Diana S. ;
Banerjee, Sarbajit ;
Sohn, Mary ;
Sharma, Virender K. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2011, 45 (09) :3895-3901
[2]  
Ash M.I. Ash., 2004, HDB PRESERVATIVES
[3]   The Release of Nanosilver from Consumer Products Used in the Home [J].
Benn, Troy ;
Cavanagh, Bridget ;
Hristovski, Kiril ;
Posner, Jonathan D. ;
Westerhoff, Paul .
JOURNAL OF ENVIRONMENTAL QUALITY, 2010, 39 (06) :1875-1882
[4]   Nanoparticle silver released into water from commercially available sock fabrics [J].
Benn, Troy M. ;
Westerhoff, Paul .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2008, 42 (11) :4133-4139
[5]  
BfR, 2009, BFR RAT NAN LEB PROD
[6]  
Biomaterials N, FAQS EPA REGISTRATIO
[7]   Antimicrobial Properties of a Novel Silver-Silica Nanocomposite Material [J].
Egger, Salome ;
Lehmann, Rainer P. ;
Height, Murray J. ;
Loessner, Martin J. ;
Schuppler, Markus .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 2009, 75 (09) :2973-2976
[8]   Characterization of the effluent from a nanosilver producing washing machine [J].
Farkas, Julia ;
Peter, Hannes ;
Christian, Paul ;
Urrea, Julian Alberto Gallego ;
Hassellov, Martin ;
Tuoriniemi, Jani ;
Gustafsson, Stefan ;
Olsson, Eva ;
Hylland, Ketil ;
Thomas, Kevin Victor .
ENVIRONMENT INTERNATIONAL, 2011, 37 (06) :1057-1062
[9]   The Behavior of Silver Nanotextiles during Washing [J].
Geranio, L. ;
Heuberger, M. ;
Nowack, B. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2009, 43 (21) :8113-8118
[10]   Generation of Metal Nanoparticles from Silver and Copper Objects: Nanoparticle Dynamics on Surfaces and Potential Sources of Nanoparticles in the Environment [J].
Glover, Richard D. ;
Miller, John M. ;
Hutchison, James E. .
ACS NANO, 2011, 5 (11) :8950-8957