Shenyang Fire Research Institution

Shenyang, China

Shenyang Fire Research Institution

Shenyang, China
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Liu S.,Shenyang Fire Research Institution | Wang Y.,Kunming Fire Fighting Command School | Yu L.,Shenyang Fire Research Institution
Advanced Materials Research | Year: 2013

Study on the timeliness of gasoline analysis adsorbed in cotton cloth carrier was carried out with solid phase microextraction-gas chromatography/mass spectrometry(SPME-GC/MS), meanwhile the effects of temperature, wind speed and humidity on the timeliness of gasoline analysis adsorbed in cotton cloth carrier has been investigated. The results show that temperature is the major factor that affects the timeliness of analysis of gasoline, followed by humidity, and finally the wind speed, and the corresponding data of timeliness, derived equations and correlation are provided. © (2013) Trans Tech Publications, Switzerland.


Liu S.J.,Shenyang Fire Research Institution | Yu L.L.,Shenyang Fire Research Institution | Xu H.N.,Shenyang Normal University | Feng K.,Shenyang Normal University | Wang Y.,Shenyang Normal University
Advanced Materials Research | Year: 2013

The application of solid phase microextraction-gas chromatography/mass spectrometry (SPME-GC/MS) to the analysis of the timeliness of burned gasoline analysis adsorbed on the floor carrier was studied in this artical, meanwhile the effects of temperature, wind speed and humidity on the timeliness of burned gasoline analysis adsorbed on the floor carrier has been investigated. The results show that temperature is the major factor that affects the timeliness of analysis of burned gasoline residues analysis, followed by humidity, and finally the wind speed, and the corresponding data of timeliness, derived equations and correlation are provided. © (2013) Trans Tech Publications, Switzerland.


Wu Y.,Shenyang Fire Research Institution | Han D.,Shenyang Gas Cylinder Safety Technology Co.
Mechanika | Year: 2012

Electrical distribution wires with melted ends showing beaded, drop-shaped, and pointed shapes are frequently encountered after fires, which may be provide useful information on the cause and development of the fire. Various methods have been studied for identifying between primary melted marks (PMM), indicating arcing as the cause of the fire, and secondary melted marks (SMM), indicating arcing as a result of the fire. But in some major cases, PMM and SMM are difficultly identified just using one method. In this study, a correlation of such behavior with some macroscopic, the in-depth composition of carbon and oxygen quantitative analysis, the composition and the chemical state in the near-surface regions, and metallurgical analysis of PMM and SMM has been studied. As a result, the given fire cause is the integrative judgments of these methods.


Wu Y.,Key Laboratory of Fire Scene Investigation and Evidence Identification | Wu Y.,Shenyang Fire Research Institution | Han D.-C.,Shenyang Gas Cylinder Safety Technology Co.
Advanced Science Letters | Year: 2012

The in-depth composition of carbon and oxygen in copper beads formed by arc and fire were studied by XPS, respectively. Corresponding to the sputtering depth, the molten product on an arc bead surface layer is with drastic decrease of carbon content and with gentle change of oxygen content which then rapid decreases. While the molten product on a fire bead surface layer is with carbon content decreasing gradually and with oxygen content increasing. As a result, the distributing of C and O and the quantitative results can be used to identify the molten product on a bead induced directly by arc and the molten product on a bead formed by fire, as complementary technique for judgments of fire cause. © 2012 American Scientific Publishers. All rights reserved.


Liu S.J.,Shenyang Fire Research Institution | Xu H.N.,Shenyang Normal University | Feng K.,Shenyang Normal University | Wang Y.,Shenyang Normal University
Applied Mechanics and Materials | Year: 2014

Dust samples of gasoline and disruptors combustion were analyzed by GC-MS/MS. The use of GC-MS/MS determination in the SRM mode, provided the unequivocal identification of the target analytes. The results show that in the gasoline combustion dust samples containing mainly fluorene, phenanthrene, anthracene, fluoranthene, pyrene and other PAHs. GC-MS/MS is an invaluable analytical technique in suspected arson cases. © (2014) Trans Tech Publications, Switzerland.


Liu S.J.,Shenyang Fire Research Institution | Xu H.N.,Shenyang Normal University | Feng K.,Shenyang Normal University | Wang Y.,Shenyang Normal University
Applied Mechanics and Materials | Year: 2013

A procedure to quantify volatile, organic sulfur compounds in gasoline was developed using solid-phase microextraction to preconcentrate the analyses followed by GC and detection with a sulfur chemiluminescence detector (SCD). The effects of temperature, time and PDMS fibers types on the extraction of gasoline has been investigated. The results show that a range of sulfur compounds were identified in gasoline. 75um PDMS, 30min, and 50°C were the optimum extraction conditions. Using the developed method can be used to identify gasoline residues in the fire. © (2013) Trans Tech Publications, Switzerland.


Wu Y.,Shenyang Fire Research Institution | Gao W.,Shenyang Fire Research Institution | Di M.,Shenyang Fire Research Institution | Zhao C.,Shenyang Fire Research Institution
Applied Mechanics and Materials | Year: 2010

At most fire scenes, electric short circuit (ESC) arc beads that may be provide useful information on the cause and development of the fire are found. Various physical or chemical methods have been proposed for identifying these electric short circuit beads to be either the cause of a fire (primary arc beads) or one caused by the flames of the fire (secondary arc beads). Little was studied, however, on their identification using the cupreous oxides formed in the molten marks. In this study, the concentration of metallic Cu and Cu 2O in the surface region and subsurface was quantified by X-ray photoelectron spectroscopy (XPS). As a result, it can be examined to distinguish the primary and secondary arc beads by comparing the distribution of the substances of Cu and Cu 2O. © (2010) Trans Tech Publications.


Wu Y.,Shenyang Fire Research Institution
Applied Mechanics and Materials | Year: 2014

This article selects an intelligent pulse three-stage charger commonly used in electric bicycles and conducts fault simulation tests of the charger under different environmental conditions based on analysis of the charging characteristics of a lead-acid battery. The test proves that the fault of the charger may lead to breakdown or explosion of the electronic devices of the charger; however, the possibility of a fire inside the charger is very small because of limited temperature rise of heating components in the charger, a small amount of combustible materials in the components, flame retardant plastics-made charger housing, etc. A fire inside the charger easily results in short circuit of connecting lines. If there is no a protective device, the electric bicycle easily catches fire. © (2014) Trans Tech Publications, Switzerland.


Liu S.J.,Shenyang Fire Research Institution | Yu L.L.,Shenyang Fire Research Institution | Gao W.,Shenyang Fire Research Institution | Wang B.,Shenyang Fire Research Institution
Applied Mechanics and Materials | Year: 2014

This paper describes the application of a adsorption tube to extract the gasoline residues. Then the gasoline residues were detected by vapor sensing arrays. The response profile of the array generated a reproducible pattern unique to gasoline that could be used to reflect subsequent sensor responses. The effects of temperature, time and adsorption tube types on the extraction of gasoline residues has been investigated. The results show that 120 °C, 1.5min, and TENAX-TA adsorption tube were the optimum extraction conditions. Using the developed method can be used to extract gasoline residues in the fire. © (2014) Trans Tech Publications, Switzerland.


Liu S.,Shenyang Fire Research Institution | Zhao C.,Shenyang Fire Research Institution | Yu L.,Shenyang Fire Research Institution
Advanced Materials Research | Year: 2012

The application of Gas Chromatography-Mass Spectrometry (GC-MS) to the analysis of gasoline residues is studied in this article. GC-MS is shown to be an rapid and sensitive method for the analysis of gasoline residues from debris samples. Groups of characteristic compounds and distribution of components were clearly observed in the gasoline. It could be a promising technique for the confirmation of the gasoline and the origin of a fire.

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