Rapid analysis of six phthalate esters in wine by ultrasound-vortex-assisted dispersive liquid–liquid micro-extraction coupled with gas chromatography-flame ionization detector or gas chromatography–ion trap mass spectrometry

2013 ◽  
Vol 769 ◽  
pp. 72-78 ◽  
Author(s):  
Giuseppe Cinelli ◽  
Pasquale Avino ◽  
Ivan Notardonato ◽  
Angela Centola ◽  
Mario Vincenzo Russo
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Ion Trap ◽  
Phthalate Esters ◽  
Rapid Analysis ◽  
Flame Ionization Detector ◽  
Ion Trap Mass Spectrometry ◽  
Ionization Detector ◽  
Flame Ionization

scholarly journals Chemical Composition of Vernonia albicans Essential Oil from India

2014 ◽  
Vol 9 (7) ◽  
pp. 1934578X1400900
Author(s):  
Rajesh K. Joshi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Flame Ionization Detector ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons ◽  
Total Oil

The chemical composition of the hydro-distilled essential oil obtained from the flowering aerial parts of Vernonia albicans DC. (Asteraceae) was analyzed by gas chromatography equipped with a flame ionization detector (GC-FID) and gas chromatography coupled with a mass spectrometry (GC/MS). Thirty-nine compounds have been identified, representing 97.5% of the total oil. The major constituents were β-caryophyllene (34.3%), γ-amorphene (19.5%), 9-epi-β-caryophyllene (6.9%), and α-pinene (6.9%). The oil was found to be rich in sesquiterpene hydrocarbons (73.9%).

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.

Frontline ® immunochromatographic device for on-site urine testing of amphetamines: laboratory validation using authentic specimens

2000 ◽  
Vol 37 (2) ◽  
pp. 199-204 ◽  
Author(s):  
O Beck ◽  
M Kraft ◽  
M R Moeller ◽  
B L Smith ◽  
S Schneider ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Close Agreement ◽  
Flame Ionization Detector ◽  
Gas Chromatography Mass Spectrometry ◽  
Ionization Detector ◽  
Test Device ◽  
Flame Ionization ◽  
Colour Scale ◽  
Urine Testing

We evaluated a new test device for amphetamines and methamphetamines (Frontline ®, cut-off limit 300 ng/mL) using authentic clinical and forensic specimens. The device is based on immunochromatography and is dipped into urine and read visually by comparison with a colour scale after a few minutes. A total of 658 specimens were tested by comparing results of the screening procedure with established immunoassays. Discordant results were further investigated by gas chromatography- mass spectrometry or gas chromatography (with flame ionization detector). The Frontline device had a sensitivity of 93% and a specificity of 98%. When specimens were classified by urine amphetamine concentration, close agreement was obtained at concentrations below 150 ng/mL and above 1000 ng/mL. A small number of specimens with amphetamine concentrations between 300 and 1000 ng/mL tested negative in the Frontline test. This finding could to some extent be explained by the enantioselectivity of the antibodies in the Frontline test to d-amphetamine. We conclude that the performance of the Frontline test device for amphetamines is adequate for presumptive clinical and forensic screening.

scholarly journals GC/MS Analysis of the Essential Oil of Vernonia cinerea

2015 ◽  
Vol 10 (7) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Rajesh K. Joshi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Essential Oil ◽  
Flame Ionization Detector ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Ms Analysis ◽  
Sesquiterpene Hydrocarbons ◽  
Total Oil ◽  
Vernonia Cinerea

The hydro-distilled essential oil obtained from the roots of V. cinerea Less. (Asteraceae) was investigated by gas chromatography equipped with flame ionization detector (GC-FID) and gas chromatography coupled with mass spectrometry (GC/MS). Twenty-five constituents were identified, which represented 97.4% of the total oil. The major compounds were α-muurolene (30.7%), β-caryophyllene (9.6%), α-selinene (8.7%), cyperene (6.7%) and α-gurjunene (6.5%). The essential oil was dominated by sesquiterpene hydrocarbons (87.8%).

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