Engineered nanoparticles and the environment: Inadvertently and intentionally produced

Nature's Nanostructures

Volumn , Issue , 2012, Pages 443-476

  Biswas, Pratim ^a   An, Woo Jin ^a   Wang, Wei Ning ^a  

^a WASHINGTON UNIVERSITY IN ST LOUIS   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ENGINEERED NANOPARTICLES;

EID: 84873731576     PISSN: None     EISSN: None     Source Type: Book    
DOI: None     Document Type: Chapter

References (114)

1. Vincent, J. H., and Clement, C. F. (2000). Ultrafine particles in workplace atmospheres, Philos. T. Roy. Soc. A, 358, pp. 2673-2682.
2. Biswas, P., and Wu, C. Y. (2005). Critical review: Nanoparticles and the environment, J.Air Waste Manage. Assoc., 55, pp. 708-746.
3. Chang, M. C. O., Chow, J. C., Watson, J. G., Hopke, P. K., Yi, S. M., and England, G. C. (2004). Measurement of ultrafine particle size distributions from coal-, oil-, and gas-fired stationary combustion sources, J.Air Waste Manage. Assoc., 54, pp. 1494-1505.
4. Kittelson, D. B. (1998). Engines and nanoparticles: A review, J.Aerosol Sci., 29, pp. 575-588.
5. Suriyawong, A., Magee, R., Peebles, K., and Biswas, P. (2009). Energy recycling by co-combustion of coal and recovered paint solids from automobile paint operations, J.Air Waste Manage. Assoc., 59, pp. 560-567.
6. Zhang, L., Ninomiya, Y., and Yamashita, T. (2006). Occurrence of inorganic elements in condensed volatile matter emitted from coal pyrolysis and their contributions to the formation of ultrafine particulates during coal combustion, Energy Fuels, 20, pp. 1482-1489.
7. Chen, Y. Z., Shah, N., Huggins, F. E., and Huffman, G. P. (2005). Transmission electron microscopy investigation of ultrafine coal fly ash particles, Environ. Sci. Technol., 39, pp. 1144-1151.
8. Linak, W. P., Yoo, J. I., Wasson, S. J., Zhu, W., Wendt, J. O. L., Huggins, F. E., Chen, Y., Shah, N., Huffman, G. P., and Gilmour, M. I. (2007). Ultrafine ash aerosols from coal combustion: Characterization and health effects, P. Combust. Inst., 31, pp. 1929-1937.
9. Lipsky, E., Stanier, C. O., Pandis, S. N., and Robinson, A. L. (2002). Effects of sampling conditions on the size distribution of fine particulate matter emitted from a pilot-scale pulverized-coal combustor, Energy Fuels, 16, pp. 302-310.
10. Zhang, K. M., and Wexler, A. S. (2004). Evolution of particle number distribution near roadways - Part I: Analysis of aerosol dynamics and its implications for engine emission measurement, Atmos. Environ., 38, pp. 6643-6653.
11. Biswas, P. (2001) Measurement of high concentration and high temperature aerosols, in Aerosol Measurements: Principles, Techniques, and Applications (ed. Baron, P. A., and Willeke, K.), John Wiley & Sons, Inc., NewYork.
12. Carbone, F., Beretta, F., and DAnna, A. (2010). Size distribution functions of ultrafine ashes from pulverized coal combustion, Combust. Sci. Technol., 182, pp. 668-682.
13. Liu, Y. G., and Daum, P. H. (2000). The effect of refractive index on size distributions and light scattering coefficients derived from optical particle counters, J.Aerosol Sci., 31, pp. 945-957.
14. Zhuang, Y., and Biswas, P. (2001). Submicrometer particle formation and control in a bench-scale pulverized coal combustor, Energy Fuels, 15, pp. 510-516.
15. Biswas, P., and Wu, C. Y. (1998). Control of toxic metal emissions from combustors using sorbents: A review, J.Air Waste Manage. Assoc., 48, pp. 113-127.
16. Ebelt, S., Brauer, M., Cyrys, J., Tuch, T., Kreyling, W. G., Wichmann, H. E., and Heinrich, J. (2001). Air quality in postunification Erfurt, East Germany: Associating changes in pollutant concentrations with changes in emissions, Environ. Health Perspect., 109, pp. 325-333.
17. Asokan, P., Saxena, M., and Asolekar, S. R. (2005). Coal combustion residues-environmental implications and recycling potentials, Resour. Conserv. Recycl., 43, pp. 239-262.
18. Maguhn, J., Karg, E., Kettrup, A., and Zimmermann, R. (2003). On-line analysis of the size distribution of fine and ultrafine aerosol particles in flue and stack gas of a municipal waste incineration plant: Effects of dynamic process control measures and emission reduction devices, Environ. Sci. Technol., 37, pp. 4761-4770.
19. Buonanno, G., Ficco, G., and Stabile, L. (2009). Size distribution and number concentration of particles at the stack of a municipal waste incinerator, Waste Manage., 29, pp. 749-755.
20. Lee, T. C. (2009). Recycling of municipal incinerator fly-ash slag and semiconductor waste sludge as admixtures in cement mortar, Constr. Build. Mater., 23, pp. 3305-3311.
21. Anderson, P. J., Wilson, J. D., and Hiller, F. C. (1989). Particle-size distribution of mainstream tobacco and marijuana smoke - Analysis using the electrical aerosol analyzer, Am. Rev. Respir. Dis., 140, pp. 202-205.
22. Wallace, L. A., Emmerich, S. J., and Howard-Reed, C. (2004). Source strengths of ultrafine and fine particles due to cooking with a gas stove, Environ. Sci. Technol., 38, pp. 2304-2311.
23. Dennekamp, M., Howarth, S., Dick, C. A. J., Cherrie, J. W., Donaldson, K., and Seaton, A. (2001). Ultrafine particles and nitrogen oxides generated by gas and electric cooking, Occup. Environ. Med., 58, pp. 511-516.
24. Venkataraman, C., Habib, G., Eiguren-Fernandez, A., Miguel, A. H., and Friedlander, S. K. (2005). Residential biofuels in south Asia: Carbonaceous aerosol emissions and climate impacts, Science, 307, pp. 1454-1456.
25. Tobias, H. J., Beving, D. E., Ziemann, P. J., Sakurai, H., Zuk, M., McMurry, P. H., Zarling, D., Waytulonis, R., and Kittelson, D. B. (2001). Chemical analysis of diesel engine nanoparticles using a nano-DMA/thermal desorption particle beam mass spectrometer, Environ. Sci. Technol., 35, pp. 2233-2243.
26. Sakurai, H., Tobias, H. J., Park, K., Zarling, D., Docherty, K. S., Kittelson, D. B., McMurry, P. H., and Ziemann, P. J. (2003). On-line measurements of diesel nanoparticle composition and volatility, Atmos. Environ., 37, pp. 1199-1210.
27. Burtscher, H., Kunzel, S., and Huglin, C. (1998). Characterization of particles in combustion engine exhaust, J.Aerosol Sci., 29, pp. 389-396.
28. McDonald, R., Hu, S. H., Martuzevicius, D., Grinshpun, S. A., LeMasters, G., and Biswas, P. (2004). Intensive short term measurements of the ambient aerosol in the Greater Cincinnati airshed, Aerosol Sci. Technol., 38, pp. 70-79.
29. Rickeard, D. J., Bateman, J. R., Kwon, Y. K., McAughey, J. J., and Dickens, C. J. (1996). Exhaust Particulate Size Distribution: Vehicle and Fuel Influences in Light Duty Vehicles, Warrendale, PA.
30. Shi, J. P., Evans, D. E., Khan, A. A., and Harrison, R. M. (2001). Sources and concentration of nanoparticles (<10 nm diameter) in the urban atmosphere, Atmos. Environ., 35, pp. 1193-1202.
31. Harris, S. J., and Maricq, M. M. (2001). Signature size distributions for diesel and gasoline engine exhaust particulate matter, J.Aerosol Sci., 32, pp. 749-764.
32. Ristovski, Z. D., Morawska, L., and Bofinger, N. D. (1998). Investigation of a modified Sinclair-La Mer aerosol generator in the submicrometer range, J.Aerosol Sci., 29, pp. 799-809.
33. Wehner, B., Birmili, W., Gnauk, T., and Wiedensohler, A. (2002). Particle number size distributions in a street canyon and their transformation into the urban-air background: Measurements and a simple model study, Atmos. Environ., 36, pp. 2215-2223.
34. Zhu, Y. F., Hinds, W. C., Kim, S., and Sioutas, C. (2002). Concentration and size distribution of ultrafine particles near a major highway, J.Air Waste Manage. Assoc., 52, pp. 1032-1042.
35. Kim, S., Shen, S., Sioutas, C., Zhu, Y. F., and Hinds, W. C. (2002). Size distribution and diurnal and seasonal trends of ultrafine particles in source and receptor sites of the Los Angeles basin, J.Air Waste Manage. Assoc., 52, pp.297-307.
36. 3 aerosol precursors as model Pt-emissions from catalytic converters, Appl. Catal. B-Environ., 14, pp. 69-84.
37. Artelt, S., Kock, H., Konig, H. P., Levsen, K., and Rosner, G. (1999). Engine dynamometer experiments: Platinum emissions from differently aged three-way catalytic converters, Atmos. Environ., 33, pp. 3559-3567.
38. Mathis, U., Ristimaki, J., Mohr, M., Keskinen, J., Ntziachristos, L., Samaras, Z., and Mikkanen, P. (2004). Sampling conditions for the measurement of nucleation mode particles in the exhaust of a diesel vehicle, Aerosol Sci. Technol., 38, pp. 1149-1160.
39. Ariya, P. A., Sun, J., Eltouny, N. A., Hudson, E. D., Hayes, C. T., and Kos, G. (2009). Physical and chemical characterization of bioaerosols -Implications for nucleation processes, Int. Rev. Phys. Chem., 28, pp. 1-32.
40. Georgakopoulos, D. G., Despres, V., Frohlich-Nowoisky, J., Psenner, R., Ariya, P. A., Posfai, M., Ahern, H. E., Moffett, B. F., and Hill, T. C. J. (2009). Microbiology and atmospheric processes: biological, physical and chemical characterization of aerosol particles, Biogeosciences, 6, pp. 721-737.
41. Pillai, S. D. (2007). Bioaerosols from land-applied biosolids: Issues and needs, Water Environ. Res., 79, pp. 270-278.
42. Pillai, S. D., and Ricke, S. C. (2002). Bioaerosols from municipal and animal wastes: background and contemporary issues, Can.J. Microbiol., 48, pp. 681-696.
43. Giusti, L. (2009). A review of waste management practices and their impact on human health, Waste Manage., 29, pp. 2227-2239.
44. Saint-Ouen, M., Camard, J. P., Host, S., and Gremy, I. (2008). Recent epidemiological data about the health effects of waste treatment plants, Environnement Risques & Sante, 7, pp. 27-35.
45. Pipinic, I. S., Varnai, V. M., Lucic, R. B., Cavlovic, A., Prester, L., Orct, T., and Macan, J. (2010). Endotoxin exposure assessment in wood-processing industry: Airborne versus settled dust levels, Arh. Hig. Rada. Toksiko., 61, pp. 161-166.
46. Dungan, R. S., Leytem, A. B., Verwey, S. A., and Bjorneberg, D. L. (2010). Assessment of bioaerosols at a concentrated dairy operation, Aerobiologia, 26, pp. 171-184.
47. Dutkiewicz, J., Krysinska-Traczyk, E., Skorska, C., Cholewa, G., and Sitkowska, J. (2002). Exposure to airborne microorganisms and endotoxin in a potato processing plant, Ann. Agr. Environ. Med., 9, pp. 225-235.
48. Korhonen, K., Liukkonen, T., Ahrens, W., Astrakianakis, G., Boffetta, P., Burdorf, A., Heederik, D., Kauppinen, T., Kogevinas, M., Osvoll, P., Rix, B. A., Saalo, A., Sunyer, J., Szadkowska-Stanczyk, I., Teschke, K., Westberg, H., and Widerkiewicz, K. (2004). Occupational exposure to chemical agents in the paper industry, Int. Arch. Occ. Environ. Hea., 77, pp. 451-460.
49. Schlosser, O., Huyard, A., Cartnick, K., Yanez, A., Catalan, V., and Do Quang, Z. (2009). Bioaerosol in composting facilities: Occupational health riskassessment, Water Environ. Res., 81, pp. 866-877.
50. Meriaux, A., Pageau, P., Cormier, Y., Goyer, N., and Duchaine, C. (2006). Bioaerosols in peat moss processing plants, J.Occup. Environ. Hyg., 3, pp.408-417.
51. Cayer, M. P., Veillette, M., Pageau, P., Hamelin, R., Bergeron, M. J., Meriaux, A., Cormier, Y., and Duchaine, C. (2007). Identification of mycobacteria in peat moss processing plants: Application of molecular biology approaches, Can.J. Microbiol., 53, pp. 92-99.
52. Buczynska, A., and Szadkowska-Stanczyk, I. (2010). Occupational hygiene and health hazards related to concentrated animal feeding operations (Cafos), Med. Pr., 61, pp. 323-331.
53. Kunte, D. P., Yeole, T. Y., Chiplonkar, S. A., and Ranade, D. R. (1998). Inactivation of Salmonella typhi by high levels of volatile fatty acids during anaerobic digestion, J.Appl. Microbiol., 84, pp. 138-142.
54. Epstein, E., Wu, N., Youngberg C, and Croteau, G. (2001). Dust and bioaerosols at a biosolids composting facility, Compost. Sci. Util., 9, pp. 250-255.
55. Sanchez-Monedero, M. A., Stentiford, E. I., and Urpilainen, S. T. (2005). Bioaerosol generation at large-scale green waste composting plants, J.Air Waste Manage. Assoc., 55, pp. 612-618.
56. Nel, A., Xia, T., Madler, L., and Li, N. (2006). Toxic potential of materials at the nanolevel, Science, 311, pp. 622-627.
57. Strobel, R., and Pratsinis, S. E. (2007). Flame aerosol synthesis of smart nanostructured materials, J.Mater. Chem., 17, pp. 4743-4756.
58. Kodas, T. T., and Hampden-Smith, M. J. (1999). Aerosol Processing of Materials, Wiley VCH, New York.
59. Jiang, J., Chen, D. R., and Biswas, P. (2007). Synthesis of nanoparticles in a flame aerosol reactor with independent and strict control of their size, crystal phase and morphology, Nanotechnology, 18, pp. 285603.
60. 2 particles in diffusion flame reactors, AIChE J., 43, pp. 2657-2664.
61. Hansen, J. P., Jensen, J. R., Livbjerg, H., and Johannessen, T. (2001). Synthesis of ZnO particles in a quench-cooled flame reactor, AIChEJ., 47, pp. 2413-2418.
62. 3 powders and the control of their particle size and properties, J.Mater. Sci., 32, pp. 1083-1092.
63. 3 by liquid-feed flame spray pyrolysis, Nat. Mater., 5, pp. 710-712.
64. Madler, L., Stark, W. J., and Pratsinis, S. E. (2002). Rapid synthesis of stable ZnO quantum dots, J.Appl. Phys., 92, pp. 6537-6540.
65. 3 particles by flame-spray pyrolysis, AIChE J., 43, pp. 2665-2669.
66. Purwanto, A., Wang, W. N., Lenggoro, I. W., and Okuyama, K. (2007). Formation and luminescence enhancement of agglomerate-free YAG:Ce3+ submicrometer particles by flame-assisted spray pyrolysis, J.Electrochem. Soc., 154, pp. J91-J96.
67. Purwanto, A., Wang, W. N., Ogi, T., Lenggoro, I. W., Tanabe, E., and Okuyama, K. (2008). High luminance YAG:Ce nanoparticles fabricated from urea added aqueous precursor by flame process, J.Alloys Compd., 463, pp.350-357.
68. 2 nanostructured composite, J.Nanosci. Nanotechnol., 8, pp. 6253-6259.
69. Tiwari, V., Jiang, J., Sethi, V., and Biswas, P. (2008). One-step synthesis of noble metal-titanium dioxide nanocomposites in a flame aerosol reactor, Appl. Catal. a-General, 345, pp. 241-246.
70. x storage, Chem. Mater., 18, pp. 2532-2537.
71. Wang, Z. M., Yang, G.X., Biswas, P., Bresser, W., and Boolchand, P. (2001). Processing of iron-doped titania powders in flame aerosol reactors, Powder Technol., 114, pp. 197-204.
72. Thimsen, E., Biswas, S., Lo, C. S., and Biswas, P. (2009). Predicting the band structure of mixed transition metal oxides: Theory and experiment, J.Phys. Chem. C, 113, pp. 2014-2021.
73. Friedlander, S. K. (2000). Smoke, Dust, and Haze, Oxford University Press, Inc., New York.
74. Wooldridge, M. S. (1998). Gas-phase combustion synthesis of particles, Progr. Energy Combust. Sci., 24, pp. 63-87.
75. Teoh, W. Y., Amal, R., and Madler, L. (2010). Flame spray pyrolysis: An enabling technology for nanoparticles design and fabrication, Nanoscale, 2, pp. 1324-1347.
76. Lee, B. W., Oh, S., and Choi, M. (2001). Simulation of growth of nonspherical silica nanoparticles in a premixed flat flame, Aerosol Sci. Technol., 35, pp. 978-989.
77. Chang, H. S., and Biswas, P. (1992). Insitu light-scattering dissymmetry measurements of the evolution of the aerosol size distribution in flames, J.Colloid Interface Sci., 153, pp. 157-166.
78. Kim, H. J., Jeong J. I., Park, Y., Yoon, Y., and Choi, M. (2003). Modeling of generation and growth of non-spherical nanoparticles in a co-flow flame, J.Nanopart. Res., 5, pp. 237-246.
79. Widiyastuti, W., Purwanto, A., Wang, W. N., Iskandar, F., Setyawan, H., and Okuyama, K. (2009). Nanoparticle formation through solid-fed flame synthesis: Experimentand modeling, AIChEJ., 55, pp. 885-895.
80. Widiyastuti, W., Hidayat, D., Purwanto, A., Iskandar, F., and Okuyama, K. (2010). Particle dynamics simulation of nanoparticle formation in a flame reactor using a polydispersed submicron-sized solid precursor, Chem. Eng.J. (Lausanne), 158, pp. 362-367.
81. 4, CO and ethanol with in situ nanoparticle aerosol-fabricated multilayer sensors, Sensor. Actuat. B-Chem., 127, pp. 63-68.
82. Sahm, T., Rong, W. H., Barsan, N., Madler, L., Friedlander, S. K., and Weimar, U. (2007). Formation of multilayer films for gas sensing by in situ thermophoretic deposition of nanoparticles from aerosol phase, J.Mater. Res., 22, pp. 850-857.
83. Yang, G. X., Biswas, P., Boolchand, P., and Sabata, A. (1999). Deposition of multifunctional titania ceramic films by aerosol routes, J.Am. Ceram. Soc.,82, pp.2573-2579.
84. 2 film reactors prepared by three different methods, Ind. Eng. Chem. Res., 38, pp. 3276-3284.
85. 2 thin films: High gas-sensing properties by control of morphology, Sensor. Actuat. B-Chem., 150, pp. 609-615.
86. Thimsen, E., and Biswas, P. (2007). Nanostructured photoactive films synthesizedbyaflame aerosol reactor, AIChEJ., 53, pp. 1727-1735.
87. 2 films with controlled morphology synthesized in a single step process: Performance of dye-sensitized solar cells and photo watersplitting, J.Phys. Chem. C, 112, pp. 4134-4140.
88. Kulkarni, P., and Biswas, P. (2003). Morphology of nanostructured films for environmental applications: Simulation of simultaneous sintering and growth, J.Nanopart. Res., 5, pp. 259-268.
89. Kulkarni, P., and Biswas, P. (2004). A Brownian dynamics simulation to predict morphology of nanoparticle deposits in the presence of interparticle interactions, Aerosol Sci. Technol., 38, pp. 541-554.
90. Okuyama, K., and Lenggoro, I. W. (2003). Preparation of nanoparticles via spray route, Chem. Eng. Sci., 58, pp. 537-547.
91. Wang, W. N., Widiyastuti, W., Lenggoro, I. W., Kim, T. O., and Okuyama, K. (2007). Photoluminescence optimization of luminescent nanocomposites fabricated by spray pyrolysis of a colloid-solution precursor, J.Electrochem. Soc., 154, pp. J121-J128.
92. Wang, W.-N., Lenggoro, W., and Okuyama, K. (in press) Preparation of Nanoparticles by Spray Routes, in Encyclopedia of Nanoscience and Nanotechnology (ENN) (ed. Nalwa, H. S.), American Scientific Publishers, Stevenson Ranch, California.
93. Basak, S., Chen, D. R., and Biswas, P. (2007). Electrospray of ionic precursor solutions to synthesize iron oxide nanoparticles: Modified scaling law, Chem. Eng. Sci., 62, pp. 1263-1268.
94. Rosellllompart, J., and Delamora, J. E (1994). Generation of monodisperse droplets 0.3 to 4 Mu-M in diameter from electrified cone-jets of highly conducting and viscous-liquids, J.Aerosol Sci., 25, pp. 1093-1119.
95. Chen, D. R., Pui, D. Y. H., and Kaufman, S. L. (1995). Electrospraying of conducting liquids for monodisperse aerosol generation in the 4 nm to 1.8 Mu-M diameter range, J.Aerosol Sci., 26, pp. 963-977.
96. Kang, Y. C., and Park, S. B. (1995). A high-volume spray aerosol generator producing small droplets for low-pressure applications, J.Aerosol Sci., 26, pp. 1131-1138.
97. Ogi, T., Hidayat, D., Iskandar, E, Purwanto, A., and Okuyama, K. (2009). Direct synthesis of highly crystalline transparent conducting oxide nanoparticles by low pressure spray pyrolysis, Adv. Powder Technol., 20, pp.203-209.
98. Hidayat, D., Ogi, T., Iskandar, E, and Okuyama, K. (2008). Single crystal ZnO:Al nanoparticles directly synthesized using low-pressure spray pyrolysis, Mater. Sci. Eng. B-Adv., 151, pp. 231-237.
99. Xia, B., Lenggoro, I. W., and Okuyama, K. (2001). Novel route to nanoparticle synthesis by salt-assisted aerosol decomposition, Adv. Mater. (Weinheim, Ger.), 13, pp. 1579.
100. Nguyen, Q. T., Kidder, J. N., and Ehrman, S. H. (2002). Hybrid gas-to-particle conversion and chemical vapor deposition for the production of porous alumina films, Thin Solid Films, 410, pp. 42-52.
101. Backman, U., Auvinen, A., and Jokiniemi, J. K. (2005). Deposition of nanostructured titania films by particle-assisted MOCVD, Surf. Coat. Technol., 192, pp. 81-87.
102. Sahu, M., and Biswas, P. (2010). Size distributions of aerosols in an indoor environment with engineered nanoparticle synthesis reactors operating under different scenarios, J.Nanopart. Res., 12, pp. 1055-1064.
103. Maynard, A. D., and Kuempel, E. D. (2005). Airborne nanostructured particles and occupational health, J.Nanopart. Res., 7, pp. 587-614.
104. Davies, J. C. (2008). Nanotechnology Oversight: An Agenda for the Next Administration, in Project on Emerging Nanotechnologies, Woodrow Wilson International Center for Scholars, Washington, DC.
105. Donaldson, K., Stone, V., Tran, C. L., Kreyling, W., and Borm, P. J. A. (2004). Nanotoxicology, Occup. Environ. Med., 61, pp. 727-728.
106. Oberdorster, G., Oberdorster, E., and Oberdorster, J. (2005). Nanotoxicology: An emerging discipline evolving from studies of ultrafine particles, Environ. Health Perspect., 113, pp. 823-839.
107. DOE. (2007). Approach to nanomaterial ES&H, in NSRC Revision 2, Department of Energy Nanoscale Science Research Centers, Washington, DC.
108. NIOSH. (2002). Exposure Assessment Methods: Research Needs and Priorities, NIOSH.
109. NIOSH. (2007). Progress Towards Safe Nanotechnology in the Work Place, NIOSH Nanotechnology Research Center.
110. Limbach, L. K., Wick, P., Manser, P., Grass, R. N., Bruinink, A., and Stark, W. J. (2007). Exposure of engineered nanoparticles to human lung epithelial cells: Influence of chemical composition and catalytic activity on oxidative stress, Environ. Sci. Technol., 41, pp. 4158-4163.
111. Sayes, C. M., Reed, K. L., and Warheit, D. B. (2007). Assessing toxicity of fine and nanoparticles: Comparing in vitro measurements to in vivo pulmonarytoxicityprofiles, Toxicol. Sci., 97, pp. 163-180.
112. Jiang, J., Oberdorster, G., Elder, A., Gelein, R., Mercer, P., and Biswas, P. (2008). Does nanoparticle activity depend upon size and crystal phase?, Nanotoxicology, 2, pp. 33-42.
113. Iyiegbuniwe, E. A., Iyiegbuniwe, A. O., and Chekuri, L. (2007). Nanomaterials and health: A critical review of occupational exposure assessmentand control strategies, Int.J. Nanomanuf., 1, pp. 574-591.
114. Lee, M. H., McClellan, W. J., Candela, J., Andrews, D., and Biswas, P. (2007). Reduction of nanoparticle exposure to welding aerosols by modification of the ventilation system in a workplace, J.Nanopart. Res., 9, pp. 127-136.