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151. Variability of The Rocket Propellants RP-1, RP-2, and TS-5: Application of a Composition- and Enthalpy-Explicit Distillation Curve Method
Lisa S. Ott, Amelia B. Hadler, Thomas J Bruno
We have recently introduced several important improvements in the measurement of distillation curves for complex fluids. This method is a significant improvement over current approaches, featuring a composition-explicit data channel for each di ...
152. Vibrationally-Resolved Sum-Frequency Generation With Broad Bandwidth Infrared Pulses
Lee J Richter, T Petralli-Mallow, John C. Stephenson
We present a novel procedure for vibrationally-resolved sum-frequency generation (SFG) in which a broad-bandwidth IR pulse is mixed with a narrow-bandwidth visible pulse. The resultant SFG spectrum is dispersed with a spectrograph and detected in pa ...
153. Weathering Patterns of Ignitable Liquids with the Advanced Distillation Curve Method
Journal of Research (NIST JRES)
Samuel Allen, Thomas J Bruno
One can take advantage of the striking similarity of ignitable liquid vaporization (or weathering)
patterns and the separation observed during distillation to predict the composition of residual
compounds in fire debris. This is done with the ad ...
154. k=2 and Other Sometimes Hidden Assumptions in Chemical Measurement Uncertainty Intervals
David Lee Duewer, S LR Ellison, William F Guthrie, D B Hibbert, C Jackson, A Kallner, Stefan D Leigh, Reenie May Parris, Kenneth W Pratt, Michele M Schantz, Katherine E Sharpless
A recent interlaboratory study that required individual analysts to estimate uncertainty intervals for their results revealed that some experienced chemical analysts have difficulty with measurement uncertainty calculations. To help validate assumpti ...