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Karen E. Murphy

Karen's research involves the use of inductively coupled plasma mass spectrometry (ICP-MS) for the accurate analysis of inorganic elements in nanomaterials, clinical and environmental samples. Her research focuses on the application of single particle ICP-MS and isotope dilution analysis including the development of high accuracy sample preparation procedures utilizing chemical separations. She has been involved in the certification of over 85 Standard Reference Materials and participated in 15 CCQM Key and Pilot international inter-comparison exercises. She has authored or co-authored more than 35 peer-reviewed publications describing these activities.


  • The Judson C. French Award, 2011

Membership and Professional Activities:

  • Member of ISO TC 229 International Standards for Nanotechnology WG 2


Determining what really counts: Modeling and measuring nanoparticle number concentrations

Elijah J. Petersen, Antonio R. Montoro Bustos, Blaza Toman, Monique E. Johnson, Mark Ellefson, George C. Caceres, Anna Lena Neuer, Qilin Chan, Jonathan Kemling, Brian Mader, Karen E. Murphy, Matthias Roesslein
Elijah J. Petersen, Antonio Montoro Bustos, Blaza Toman, Monique Johnson, Mark Ellefson, George C. Caceres, Anna Lena Neuer, Qilin Chan, Jonathan Kemling, Brian

Development of a kelp powder (Thallus laminariae) Standard Reference Material

Lee L. Yu, Joseph Browning, Carolyn Q. Burdette, George C. Caceres, Kaitlyn Chieh, William C. Davis, MIchael Ellisor, Brittany Kassim, Stephen E. Long, Karen E. Murphy, Rabia Oflaz, Rick L. Paul, Katherine E. Sharpless, Laura J. Wood, James H. Yen, Rolf L. Zeisler
A Standard Reference Material (SRM) of seaweed, SRM 3232 Kelp Powder (Thallus laminariae) has been developed to support food and dietary supplement measurements
Created May 7, 2019