Determination of Volatile Organic Compounds in Recycled Polyethylene Terephthalate Fibers by HS-GC-FID to Evaluate the Efficiency of Testing Conditions

2020 ◽  
Vol 993 ◽  
pp. 1511-1517
Author(s):  
Shan Shan Liu ◽  
Ye Chen ◽  
Yu Hui Wang ◽  
Ling Ling Gao ◽  
Fu You Ke ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Polyethylene Terephthalate ◽  
Organic Compounds ◽  
Incubation Temperature ◽  
Headspace Sampling ◽  
Recycled Pet ◽  
Flame Ionization ◽  
Volatile Organic ◽  
Recycled Polyethylene

A method to determine the volatile organic compounds (VOCs) in the recycled polyethylene terephthalate fiber was presented by using the headspace sampling-gas chromatography coupled to flame ionization detector (HS-GC-FID), in order to evaluate the level of VOC contamination. The extraction variables, such as the incubation temperature, the pre-incubation time and the size of the vial, were also studied. The effects on the determination of VOC were also compared using two type chromatographic columns. The optimal conditions were found using a headspace sampling for 20 min at 100 °C, where 120 mL vials and TM-1 column were prior to analysis of benzene compounds in PET(polyethylene terephthalate) fibers. The results can be used in analysis of VOC from recycled PET fibers.

Simultaneous Determination of Volatile Organic Compounds in Commercial Alcoholic Beverages by Gas Chromatography with Flame Ionization Detection

2017 ◽  
Vol 100 (5) ◽  
pp. 1492-1499 ◽  
Author(s):  
Hyung Min Kim ◽  
Gun Yang ◽  
Jung Yoon Kim ◽  
Sang Jun Yoon ◽  
Byong-kyu Shin ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Alcoholic Beverage ◽  
Alcoholic Beverages ◽  
Fast Method ◽  
Flame Ionization Detection ◽  
Ionization Detection ◽  
Flame Ionization ◽  
Volatile Organic

Abstract A simple and fast method was developed for the determination of volatile organic compounds in alcoholic beverages. Eleven volatile organic compounds (acetaldehyde, methanol, 2-propanol, tert-butanol, 1-propanol, ethyl acetate, 2-butanol, isobutanol, 1-butanol, 3-methyl-1butanol, and 2-methyl-1-butanol) in alcoholic beverages were analyzed with a simple direct-injection method using GC with flame ionization detection. These compounds should be monitored in the QC of production processes because they are detrimental to human health. The method was validated with four types of alcoholic beverages (beers, fruit wines, rice wines, and spirits) to confirm the versatility of the method. Linearity showed r2 values from 0.9986 to 0.9995, with LODs ranging from 0.010 to 1.000 mg/L. Precision and accuracy showed acceptable results, proving the effectiveness of the method. The developed method was applied to 40 commercial samples representing the four types of alcoholic beverages, and principal component analysis was performed to determine profiles of the volatile organic compounds, depending on the type of alcoholic beverage.

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