Evidence map›Paper›PMID 31561514›Full record

ArticleMolecules (Basel, Switzerland)2019

Surface Persistence of Trace Level Deposits of Highly Energetic Materials.

Leonardo C Pacheco-Londoño, José L Ruiz-Caballero, Michael L Ramírez-Cedeño, Ricardo Infante-Castillo, Nataly J Gálan-Freyle, Samuel P Hernández-Rivera

Open access · goldAbstract read
In one paragraph

Article in Molecules (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.6field-weighted citation impact, top 39% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 6 citations in OpenAlex.

  1. Review
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 3 countries.

Leonardo C Pacheco-LondoñoR3-C Research and Education Component of ALERT DHS Center of Excellence for Explosives Research, Department of Chemistry, University of Puerto Rico, Mayaguez Campus, Mayaguez, PR 00681, USA. leonardo.pacheco@unisimonbolivar.edu.co.ORCID 0000-0002-5770-3706
José L Ruiz-CaballeroR3-C Research and Education Component of ALERT DHS Center of Excellence for Explosives Research, Department of Chemistry, University of Puerto Rico, Mayaguez Campus, Mayaguez, PR 00681, USA. jose.ruiz9@upr.edu.ORCID 0000-0001-9085-7427
Michael L Ramírez-CedeñoR3-C Research and Education Component of ALERT DHS Center of Excellence for Explosives Research, Department of Chemistry, University of Puerto Rico, Mayaguez Campus, Mayaguez, PR 00681, USA. michael.l.ramirez@gmail.com.
Ricardo Infante-CastilloDepartment of Physics-Chemistry, University of Puerto Rico, Arecibo, PR 00614, USA. ricinfante@gmail.com.ORCID 0000-0001-6060-9596
Nataly J Gálan-FreyleR3-C Research and Education Component of ALERT DHS Center of Excellence for Explosives Research, Department of Chemistry, University of Puerto Rico, Mayaguez Campus, Mayaguez, PR 00681, USA. nataly.galan@unisimonbolivar.edu.co.ORCID 0000-0002-2096-7900
Samuel P Hernández-RiveraR3-C Research and Education Component of ALERT DHS Center of Excellence for Explosives Research, Department of Chemistry, University of Puerto Rico, Mayaguez Campus, Mayaguez, PR 00681, USA. pacheco.londono@gmail.com.ORCID 0000-0003-2536-6693
Universidad Simón Bolívar · COUniversity of Puerto Rico-Mayaguez · PRGeorge Mason University · USUniversity of Puerto Rico at Arecibo · PR

Funding

U.S. Department of Defense, University Research Initiative Multidisciplinary University Research Initiative (URI)-MURI Program DAAD19-02-1-0257U.S. Department of Homeland Security, Science and Technology Directorate, Office of University Programs 2013-ST-061-ED0001
6 · The paper itself

Abstract

In the fields of Security and Defense, explosive traces must be analyzed at the sites of the terrorist events. The persistence on surfaces of these traces depends on the sublimation processes and the interactions with the surfaces. This study presents evidence that the sublimation process of these traces on stainless steel (SS) surfaces is very different than in bulk quantities. The enthalpies of sublimation of traces of four highly energetic materials: triacetone triperoxide (TATP), 2,4-dinitrotoluene (DNT), 2,4,6-trinitrotoluene (TNT), and 1,3,5- trinitrohexahydro-s-triazine (RDX) deposited on SS substrates were determined by optical fiber coupled-grazing angle probe Fourier Transform Infrared (FTIR) Spectroscopy. These were compared with enthalpies of sublimation determined by thermal gravimetric analysis for bulk amounts and differences between them were found. The sublimation enthalpy of RDX was very different for traces than for bulk quantities, attributed to two main factors. First, the beta-RDX phase was present at trace levels, unlike the case of bulk amounts which consisted only of the alpha-RDX phase. Second, an interaction between the RDX and SS was found. This interaction energy was determined using grazing angle FTIR microscopy. In the case of DNT and TNT, bulk and traces enthalpies were statistically similar, but it is evidenced that at the level of traces a metastable phase was observed. Finally, for TATP the enthalpies were statistically identical, but a non-linear behavior and a change of heat capacity values different from zero was found for both trace and bulk phases.

Indexed as

Models, ChemicalAlgorithmsExplosive AgentsSpectroscopy, Fourier Transform InfraredThermogravimetryX-Ray DiffractionExplosive AgentsexplosiveFTIRgrazing anglesublimationthermogravimetric analysis

Identifiers

PMID31561514
PMCPMC6804148
OpenAlexW2972375624

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.