UNCERTAINTY OF QUALITATIVE RESULTS OF CHEMICAL ANALYSES IN FIRE SAFETY
The article deals with the current issue of evaluation of qualitative results uncertainty of chemical analyses in the example of chromatographic analyses of specimens of accelerants from a fire place with the SPME-GC/MS technique. The suitability of this technique demonstrates with the results of al...
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| Format: | Article |
| Language: | English |
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Czech Technical University, Prague
2018-04-01
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| Series: | Civil Engineering Journal |
| Subjects: | |
| Online Access: | http://www.civilengineeringjournal.cz/archive/issues/2018/2018_1/1-2018-0001(1).pdf |
| _version_ | 1797700990740201472 |
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| author | Otto Dvořák |
| author_facet | Otto Dvořák |
| author_sort | Otto Dvořák |
| collection | DOAJ |
| description | The article deals with the current issue of evaluation of qualitative results uncertainty of chemical analyses in the example of chromatographic analyses of specimens of accelerants from a fire place with the SPME-GC/MS technique. The suitability of this technique demonstrates with the results of alidation measurements of analytical characteristics: sensitivity, detection limits, linearity, selectivity and repeatability. It characterizes briefly the current state of knowledge in the area and applies the Bayesian theory for the unconditional “a-priori” probability of an analyte presence in a sample, P (H) of 0.5 and 0.95 for calculation estimates the “a-posteriori” conditional probability of the presence of the analyte in the sample relative to the experimental evidence, P (H / E) with the results of 0.97 and 0.98. This result can be interpreted as a high level of assurance of the hypothesis of presence of the analyte in the sample. In conclusion it is stated that the knowledge can also be applied in the field of construction not only in qualitative analyses of building materials / products, e. g, by FTIR, but also in the probability risk assessment. |
| first_indexed | 2024-03-12T04:28:53Z |
| format | Article |
| id | doaj.art-8128d1ac852a4c12929aee909d0d814d |
| institution | Directory Open Access Journal |
| issn | 1805-2576 |
| language | English |
| last_indexed | 2024-03-12T04:28:53Z |
| publishDate | 2018-04-01 |
| publisher | Czech Technical University, Prague |
| record_format | Article |
| series | Civil Engineering Journal |
| spelling | doaj.art-8128d1ac852a4c12929aee909d0d814d2023-09-03T10:12:49ZengCzech Technical University, PragueCivil Engineering Journal1805-25762018-04-012018111110.14311/CEJ.2018.01.0001UNCERTAINTY OF QUALITATIVE RESULTS OF CHEMICAL ANALYSES IN FIRE SAFETYOtto Dvořák0University Centre for Energy Efficient Buildings of Czech Technical University in Prague, Třinecká 1024, 273 43 Buštěhrad, Czech RepublicThe article deals with the current issue of evaluation of qualitative results uncertainty of chemical analyses in the example of chromatographic analyses of specimens of accelerants from a fire place with the SPME-GC/MS technique. The suitability of this technique demonstrates with the results of alidation measurements of analytical characteristics: sensitivity, detection limits, linearity, selectivity and repeatability. It characterizes briefly the current state of knowledge in the area and applies the Bayesian theory for the unconditional “a-priori” probability of an analyte presence in a sample, P (H) of 0.5 and 0.95 for calculation estimates the “a-posteriori” conditional probability of the presence of the analyte in the sample relative to the experimental evidence, P (H / E) with the results of 0.97 and 0.98. This result can be interpreted as a high level of assurance of the hypothesis of presence of the analyte in the sample. In conclusion it is stated that the knowledge can also be applied in the field of construction not only in qualitative analyses of building materials / products, e. g, by FTIR, but also in the probability risk assessment.http://www.civilengineeringjournal.cz/archive/issues/2018/2018_1/1-2018-0001(1).pdfQualitative chemical analysesGC/MSFire debrisSamplesAccelerantsUncertainty estimation Bayes´ theoremFire technical expertiseFire safety of buildings |
| spellingShingle | Otto Dvořák UNCERTAINTY OF QUALITATIVE RESULTS OF CHEMICAL ANALYSES IN FIRE SAFETY Civil Engineering Journal Qualitative chemical analyses GC/MS Fire debris Samples Accelerants Uncertainty estimation Bayes´ theorem Fire technical expertise Fire safety of buildings |
| title | UNCERTAINTY OF QUALITATIVE RESULTS OF CHEMICAL ANALYSES IN FIRE SAFETY |
| title_full | UNCERTAINTY OF QUALITATIVE RESULTS OF CHEMICAL ANALYSES IN FIRE SAFETY |
| title_fullStr | UNCERTAINTY OF QUALITATIVE RESULTS OF CHEMICAL ANALYSES IN FIRE SAFETY |
| title_full_unstemmed | UNCERTAINTY OF QUALITATIVE RESULTS OF CHEMICAL ANALYSES IN FIRE SAFETY |
| title_short | UNCERTAINTY OF QUALITATIVE RESULTS OF CHEMICAL ANALYSES IN FIRE SAFETY |
| title_sort | uncertainty of qualitative results of chemical analyses in fire safety |
| topic | Qualitative chemical analyses GC/MS Fire debris Samples Accelerants Uncertainty estimation Bayes´ theorem Fire technical expertise Fire safety of buildings |
| url | http://www.civilengineeringjournal.cz/archive/issues/2018/2018_1/1-2018-0001(1).pdf |
| work_keys_str_mv | AT ottodvorak uncertaintyofqualitativeresultsofchemicalanalysesinfiresafety |