1. Supporting Information
Publications:
1. Mines, L. W. D.; Park, J. H.; Mudunkotuwa, I. A.; Anthony, T. R.; Grassian, V. H.; Peters,
T. M. Porous Polyurethane Foam for use as a Particle Collection Substrate in a Nanoparticle
Respiratory Deposition Sampler. Aerosol Science and Technology 2015, In preparation.
2. Vosburgh, D. J. H.; Park, J. H.; Mines, L. W. D.; Mudunkotuwa, I. A.; Grassian, V. H.;
Anthony, T. R.; Peters, T. M. Nonwoven Textile for use in a Nanoparticle Respiratory Dose
Sampler. Aerosol Science and Technology 2015, In preparation.
3. Grassian, V.H.; Haes, A. J.; Mudunkotuwa, I. A.; Demokritou, P.; Kane, A. B.; Murphy, C.
J.; Hutchison, J. E.; Isaacs, J. A.; Jun, Y. S.; Karn, B.; Khondaker, S. .I.; Larsen, S. C.; Lau,
B. L. T.; Pettibone, J. M; Sadik, O. A.; Saleh, N. B.; Teague, C.; NanoEHS – Defining
Fundamental Science Needs: No Easy Feat when the Simple itself is Complicated.
Environmental Science: Nano 2015, Submitted.
4. Mudunkotuwa, I. A.; Grassian, V. H.; Biological and Environmental Media Control Oxide
Nanoparticle Surface Composition: The Roles of Biological Components (Proteins, Peptides
and Amino Acids), Inorganic Oxyanions and Humic Acid Langmuir 2014, 30 (29), 8751–
8760. Environmental Science: Nano 2015, Submitted.
5. Mudunkotuwa, I. A.; Anthony, T. R.; Grassian, V. H.; Peters, T. M. Accurate
Quantification of TiO2 Nanoparticles Collected on Air Filters Using a Microwave-Assisted
Acid Digestion Method. Journal of Occupational & Environmental Hygiene 2015, Accepted.
6. Park, J. H.; Mudunkotuwa, I. A.; Mines, L. W. D.; Anthony, T. R.; Grassian, V. H.; Peters,
T. M. A Granular Bed for Use in a Nanoparticle Respiratory Deposition Sampler. Aerosol
Science and Technology 2015, 49, 179-187.
7. Mudunkotuwa, I. A.; Grassian, V. H.; Histidine Adsorption on TiO2 Nanoparticles: An
Integrated Spectroscopic, Thermodynamic and Molecular-Based Approach towards
Understanding Nano-Bio Interactions Langmuir 2014, 30 (29), 8751–8760.
8. Park, J. H.; Mudunkotuwa, I. A.; Kim, J. S.; Stanam, A.; Thorne, P. S.; Grassian, V. H.;
Peters, T. M. Physicochemical Characterization of Simulated Welding Fumes from a Spark
Discharge System Aerosol Science and Technology 2014, 768-776.
9. Borcherding, J.; Baltrusaitis, J.; Chen, H.; Stebounova, L.; Wu, C.-M.; Rubasinghege, G.;
Mudunkotuwa, I. A.; Caraballo, J. C.; Zabner, J.; Grassian, V. H.; Comellas, A. P. Iron
oxide nanoparticles induce Pseudomonas aeruginosa growth, induce biofilm formation, and
inhibit antimicrobial peptide function Environmental Science: Nano 2014, 1, 123-132.
10. Mudunkotuwa, I. A.; Minshid, A. A.; Grassian, V. H. ATR-FTIR spectroscopy as a tool to
probe surface adsorption on nanoparticles at the liquid-solid interface in environmentally and
biologically relevant media Analyst 2014, 139, 870-881.
11. Monick, M. M.; Baltrusaitis, J.; Powers, L. S.; Borcherding, J. A.; Caraballo, J. C.;
Mudunkotuwa, I. A .; Peate, D. W.; Walters, K.; Thompson, J. M.; Grassian, V. H. Effects
of Eyjafjallajokull volcanic ash on innate immune system responses and bacterial growth in
vitro Environmental Health Perspectives 2013, 121, 691-698.
12. Kristan, L. S. W.; Adamcakova-Dodd, A.; Wongrakpanich, A.; Mudunkotuwa, I. A.;
Mapuskar, K. A.; Joshi, V. B.; Guymon, C. A.; Spitz, D. R.; Grassian, V. H.; Thorne, P. S.;
Salem, A. K. Chitosan coating of copper nanoparticles reduces in vitro toxicity and increases
inflammation in the lung Nanotechnology 2013, 24, 395101

2. Supporting Information
13. Mudunkotuwa, I. A.; Pettibone, J. M.; Grassian, V. H. Environmental implications of
nanoparticle aging in the processing and fate of copper-based nanomaterials Environmental
Science & Technology 2012, 46(13), 7001-7010.
14. Mudunkotuwa, I. A.; Rupasinghe, T.; Wu, C.-M.; Grassian, V. H. Dissolution of ZnO
nanoparticles at circumneutral pH: A study of size effects in the presence and absence of
citric acid Langmuir 2012, 28, 396-403.
15. Bian, S.-W.; Mudunkotuwa, I. A.; Rupasinghe, T.; Grassian, V. H. Aggregation and
dissolution of 4 nm ZnO nanoparticles in aqueous environments: influence of pH, ionic
strength, size, and adsorption of humic acid Langmuir 2011, 27, 6059-6068.
16. Mudunkotuwa, I. A.; Grassian, V. H. The devil is in the details (or the surface): impact of
surface structure and surface energetics on understanding the behavior of nanomaterials in
the environment Journal of Environmental Monitoring 2011, 13.
17. Mudunkotuwa, I. A.; Grassian, V. H. Citric acid adsorption on TiO2 nanoparticles in
aqueous suspensions at acidic and circumneutral pH: surface coverage, surface speciation, and
its impact on nanoparticle-nanoparticle interactions Journal of the American Chemical Society
2010, 132, 14986-14994.
Presentations:
(1) “Engineered Nanoparticle Surface Speciation in Biological and Environmental Media”-
Poster, Environmental Nanotechnology – Gordon Conference (2015), Vermont, VT
(2) “Biological and Environmental Media Control Oxide Nanoparticle Surface”- Oral, Iowa
Academy of Science (2015), Iowa City, IA
(3) “Engineered metal based nanomaterials in aqueous environments: Surface interactions and
implications”- Oral, ACS Midwest Regional Meeting (2014), Columbia, MO
(4) “Engineered Nanomaterials in Aqueous Environments: Interactions, Transformations and
Implications” – Poster, Environmental Nanotechnology - Gordon Conference (2013), Vermont,
VT.
(5) “Histidine Adsorption on TiO2 Nanoparticles: A Fundamental Approach towards
Understanding Nano-Bio Interactions”- Oral, James F. Jacobson Graduate Conference (2013),
University of Iowa, IA
(6) “Environmental Implications of Nanoparticle Aging in the Processing and Fate of Copper-
based Nanomaterials” – Poster, ACS National Conference (2012), San Diego, CA
(7) “Citric Acid Adsorption on TiO2 Nanoparticles in Aqueous Suspensions” – Oral,
ACS National Conference (2011), Anaheim, CA
(8) “Citric Acid Adsorption on TiO2 Nanoparticles in Aqueous Suspensions” – Poster,
Environmental Nanotechnology - Gordon Conference (2011), New Hampshire, NH, James F.
Jacobson Graduate Conference, University of Iowa, IA
(9) “Citric Acid Adsorption on TiO2 Nanoparticles in Aqueous Suspensions” – Poster,
NOBCChe Conference (2011), University of Iowa, IA