Kinetic Study of Thermal Degradation of Hazardous Organic Compounds in Different Atmospheres

2018 ◽  
Vol 35 (3) ◽  
pp. 159-168
Author(s):  
Haiping Xiao ◽  
Yu Ru ◽  
Dahai Yan ◽  
Li Li ◽  
Xiaowan Sun ◽  
...  
2019 ◽  
Vol 15 (7) ◽  
pp. 788-800 ◽  
Author(s):  
Natasa P. Kalogiouri ◽  
Victoria F. Samanidou

Background:The sample preparation is the most crucial step in the analytical method development. Taking this into account, it is easily understood why the domain of sample preparation prior to detection is rapidly developing. Following the modern trends towards the automation, miniaturization, simplification and minimization of organic solvents and sample volumes, green microextraction techniques witness rapid growth in the field of food quality and safety. In a globalized market, it is essential to face the consumers need and develop analytical methods that guarantee the quality of food products and beverages. The strive for the accurate determination of organic hazards in a famous and appreciated alcoholic beverage like wine has necessitated the development of microextraction techniques.Objective:The objective of this review is to summarize all the recent microextraction methodologies, including solid phase extraction (SPE), solid phase microextraction (SPME), liquid-phase microextraction (LPME), dispersive liquid-liquid microextraction (DLLME), stir bar sorptive extraction (SBSE), matrix solid-phase dispersion (MSPD), single-drop microextraction (SDME) and dispersive solid phase extraction (DSPE) that were developed for the determination of hazardous organic compounds (pesticides, mycotoxins, colorants, biogenic amines, off-flavors) in wine. The analytical performance of the techniques is evaluated and their advantages and limitations are discussed.Conclusion:An extensive investigation of these techniques remains vital through the development of novel strategies and the implication of new materials that could upgrade the selectivity for the extraction of target analytes.


1973 ◽  
Vol 26 (8) ◽  
pp. 1791 ◽  
Author(s):  
RS Dickson ◽  
LJ Michel

The thermal decomposition of Co2(CO)6(PhC2Ph) has been investigated in detail. Differential scanning calorimetry was used to determine the most suitable temperature range for the study. At 180�, Co2(CO)6(PhC2Ph) decomposes to form cobalt, carbon monoxide, tetraphenylcyclopentadienone, hexaphenylbenzene, and other organic compounds. Variation in the temperature, the time, and the solvent used for the degradation reaction causes significant changes in the yields of the organic products. An investigation of the effects of adding stoichiometric amounts of free alkyne, tetra-phenylcyclopentadienone, and hexaphenylbenzene has been initiated in an attempt to understand the degradation mechanism.


2020 ◽  
Vol 176 ◽  
pp. 109148 ◽  
Author(s):  
Zhuo Xu ◽  
Shreyas S. Kolapkar ◽  
Stas Zinchik ◽  
Ezra Bar-Ziv ◽  
Armando G. McDonald

Author(s):  
Kristofer P. Isaacson ◽  
Caitlin R. Proctor ◽  
Q. Erica Wang ◽  
Ethan Y. Edwards ◽  
Yoorae Noh ◽  
...  

Plastic pipes are susceptible to thermal degradation which can produce volatile organic compounds such as benzene, toluene, ethylbenzene, and xylene that leach into drinking water.


Sign in / Sign up

Export Citation Format

Share Document