scholarly journals Determination of benzene, toluene, ethyl benzene and xylene in administration room′s air of hospitals using solid phase micro extraction/gas chromatography/flame ionization detector

2014 ◽  
Vol 3 (1) ◽  
pp. 27 ◽  
Author(s):  
Abolfazl Barkhordari ◽  
Maryam Kheirmand ◽  
MohammadHossain Mosaddegh ◽  
Ziba Farajzadegan
Keyword(s):  
Gas Chromatography ◽  
Solid Phase ◽  
Flame Ionization Detector ◽  
Ethyl Benzene ◽  
Solid Phase Micro Extraction ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Benzene Toluene

Characterization of Agarwood Incense using Gas Chromatography - Mass Spectrometry (GC-MS) coupled with Solid Phase Micro Extraction (SPME) and Gas Chromatography - Flame Ionization Detector (GC-FID)

2015 ◽  
Vol 12 (2) ◽  
pp. 67
Author(s):  
Nurlaila Ismail ◽  
Mastura Lbrahim ◽  
Seema Zareen ◽  
Mohd Hezri Fazalul Rahiman ◽  
Saiful Nizam Tajuddin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Solid Phase ◽  
Flame Ionization Detector ◽  
Gas Chromatography Mass Spectrometry ◽  
Solid Phase Micro Extraction ◽  
Ionization Detector ◽  
Polydimethyl Siloxane ◽  
Flame Ionization ◽  
Chromatography Mass Spectrometry

This paper presents the application of Solid Phase Micro Extraction (SPME) coupled with Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography-Flame Ionization Detector (GC-FID) to charaterize agarwood incense. The work involved three types of SPME fibres at 30 minutes sampling time. The fibres are 50/30 µm divinylbenzene-carboxen­polydimethysiloxane (DVB-CAR-PDMS), 65 µm polydi methylsiloxane­divinylbenzene (PDMS-DVB) and 85 µm carboxen-polydimethyl siloxane (CAR-PDMS). The results showed that among many compounds extracted by GC-MS coupled with SPME, six compounds were found significantly presence in high quality aganvood incense due to their high percentage area (%). They are beta-maaliene, alpha-elemol, beta-selinene, 10-epi-gamma-eudesmol, agarospirol and caryophellene oxide. The finding offers a new approach for establishing the volatile profile of agarwood incense components which is beneficial for agarwood grading and discrimination.

Characterization of Agarwood Incense using Gas Chromatography - Mass Spectrometry (GC-MS) coupled with Solid Phase Micro Extraction (SPME) and Gas Chromatography - Flame Ionization Detector (GC-FID)

2015 ◽  
Vol 12 (2) ◽  
pp. 67
Author(s):  
Nurlaila Ismail ◽  
Mastura Lbrahim ◽  
Seema Zareen ◽  
Mohd Hezri Fazalul Rahiman ◽  
Saiful Nizam Tajuddin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Solid Phase ◽  
Flame Ionization Detector ◽  
Gas Chromatography Mass Spectrometry ◽  
Solid Phase Micro Extraction ◽  
Ionization Detector ◽  
Polydimethyl Siloxane ◽  
Flame Ionization ◽  
Chromatography Mass Spectrometry

This paper presents the application of Solid Phase Micro Extraction (SPME) coupled with Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography-Flame Ionization Detector (GC-FID) to charaterize agarwood incense. The work involved three types of SPME fibres at 30 minutes sampling time. The fibres are 50/30 µm divinylbenzene-carboxen­polydimethysiloxane (DVB-CAR-PDMS), 65 µm polydimethylsiloxane­divinylbenzene (PDMS-DVB) and 85 µm carboxen-polydimethyl siloxane (CAR-PD MS). The results showed that among many compounds extracted by GC-MS coupled with SPME, six compounds were found significantly presence in high quality aganvood incense due to their high percentage area(%). They are b-maaliene, a-elemol, b-selinene, 10-epi-y-eudesmol, agarospirol and caryophellene oxide. The finding offers a new approach for establishing the volatile profile of agarwood incense components which is beneficial for agarwood grading and discrimination. 

Rapid Gas-Chromatographic Determination of Amphetamine and Methamphetamine in Urine

1974 ◽  
Vol 20 (11) ◽  
pp. 1460-1462 ◽  
Author(s):  
Naresh C Jain ◽  
Thomas C Sneath ◽  
Robert D Budd
Keyword(s):  
Gas Chromatography ◽  
Quantitative Result ◽  
Chromatographic Determination ◽  
Flame Ionization Detector ◽  
Specific Method ◽  
Ionization Detector ◽  
Rapid Procedure ◽  
Flame Ionization ◽  
Dual Analysis

Abstract A simple, rapid procedure is described for measuring amphetamine and methamphetamine in urine by gas chromatography, with use of a flame ionization detector. This method is sensitive to subtherapeutic concentrations (0.1 µg/ml or less), and is especially useful in clinical situations where an accurate and quantitative result is needed in less than 30 min. With the method, amphetamine and methamphetamine can be determined as the free bases on a 10% Apiezon L-10% KOH column and as their trifluoroacetamide derivatives on a 3% OV-17 column. This dual analysis eliminates false positives and any interfering substances that may be present in the urine, and is thus a specific method for the two drugs.

Sign in / Sign up

Export Citation Format

Share Document