Analysis of emulsion explosives residues by LC/MS
- VernacularTitle:乳化炸药爆炸残留物液相色谱/质谱分析
- Author:
Lei REN
- Publication Type:Journal Article
- Keywords:
Emulsion explosives;
Explosive residues;
Liquid chromatography/mass spectrometr(yLC/MS);
Forensic medicine
- From:
Journal of Chongqing Medical University
2007;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To use liquid chromatography/mass spectrometry to detect single-oleic acid sorbitan ester(SP-80)of emulsion explosives residues.Methods:Samples were collected after the ultrasonic cleaning solution with hexane,then filtered,and the filtrate were dried up with the rotary evaporator,dissolved in methanol,and then centrifuged.Chromatographic conditions were as follows:column phenomenex luna of C18 3?m(100?2.0 mm)(ID),pre-column Luna of C18 3?m(10?2.0 mm)(ID),mobile phase volume ratio of 1∶200 aqueous solution of acetic acid,isopropyl alcohol of 10∶90; flow rate of 0.20 ml/min,and column temperature of 35℃.MS parameter included drying nitrogen gas temperature of 200℃,nebulizer flow of 1.5 L/min,and detection voltage of 1.40 kV.Results:The linearity range of the assay for SP-80 was 0.2～1 mg/ml with correlation coefficient of 0.997 8,and the detection limit of 1?g/ml.3 extracts detected no significant difference.SP-80 were detected in two tapes emulsion explosives.Conclusion:The method of LC/MS can be used to infer the types of explosives for its operative simplicity, small sample requirement,high sensitivity,and wide linear range.
