Extraction optimization and pixel-based chemometric analysis of semi-volatile organic compounds in groundwater

2017 ◽  
Vol 9 (41) ◽  
pp. 5970-5979
Author(s):  
Peter Christensen ◽  
Giorgio Tomasi ◽  
Mette Kristensen ◽  
Peter E. Holm ◽  
Jan H. Christensen
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Enrichment Factors ◽  
Chemometric Analysis ◽  
Complex Mixtures ◽  
Volatile Organic ◽  
High Enrichment ◽  
Dual Extraction ◽  
First Time

Combined dual extraction steps provided high enrichment factors and separation of peaks from unresolved complex mixtures in groundwaters. For the first time, pixel-based analysis of summed extracted ion chromatograms (sEIC's) was used for the characterization of semi-VOCs.

Characterization of Infrared Chemical Sensors Modified with ZnO Nanowires for the Detection of Volatile Organic Compounds

2005 ◽  
Vol 59 (8) ◽  
pp. 1002-1008 ◽  
Author(s):  
Jyisy Yang ◽  
Yu-Ru Shih ◽  
I-Cherng Chen ◽  
Chung-I Kuo ◽  
Yih-Shiaw Huang
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Enrichment Factors ◽  
Zno Nanowires ◽  
Regression Coefficients ◽  
Sensing System ◽  
Sensing Systems ◽  
Volatile Organic ◽  
Quantitative Analyses

In this paper we describe the application and characterization of zinc oxide (ZnO) nanowires in an infrared (IR) chemical sensing system for the detection of volatile organic compounds (VOCs). Under suitable conditions, we grew ZnO nanowires on the surfaces of IR internal reflection elements (IREs) and obtained successful results for the detection of VOCs. ZnO nanowires offer a large surface area to effectively adsorb the examined species; the sensitivity of these IR sensing systems was increased by 3- to 15-fold after surface treatment with the ZnO nanowires. To explore the performance of this type of sensor, we correlated the morphologies of the ZnO nanowires grown on the surfaces of the IREs with the adsorption behavior observed during the sensing of the VOCs. To characterize the properties of the ZnO nanowires during the detection of VOCs having a range of functionalities, we classified the VOCs and examined their enrichment factors by comparing the IR signals detected in the presence and absence of the ZnO nanowires. Our results indicate that the ZnO nanowires exhibited better performance for the detection of aromatic-type VOCs than they did for non-aromatic compounds. For quantitative analyses, we examined several compounds for their responses toward varying quantities of injected VOCs. Our results indicate that the IREs treated with ZnO nanowires display acceptable linearity in their standard curves; the linear regression coefficients were higher than 0.995 for a range of volatile compounds.

Characterization of biogenic volatile organic compounds (BVOCs) in cleaning reagents and air fresheners in Hong Kong

2011 ◽  
Vol 45 (34) ◽  
pp. 6191-6196 ◽  
Author(s):  
Yu Huang ◽  
Steven Sai Hang Ho ◽  
Kin Fai Ho ◽  
Shun Cheng Lee ◽  
Yuan Gao ◽  
...  
Keyword(s):  
Hong Kong ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Biogenic Volatile Organic Compounds ◽  
Volatile Organic

ChemInform Abstract: Characterization of Hydrophilic and Hydrophobic Ionic Liquids: Alternatives to Volatile Organic Compounds for Liquid-Liquid Separations

ChemInform ◽  
2010 ◽  
Vol 33 (50) ◽  
pp. no-no
Author(s):  
Ann E. Visser ◽  
W. Matthew Reichert ◽  
Richard P. Swatloski ◽  
Heather D. Willauer ◽  
Jonathan G. Huddleston ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Abstract Characterization ◽  
Volatile Organic ◽  
Hydrophobic Ionic Liquids ◽  
Liquid Separations

A rationally designed vapoluminescent compound with adsorptive channels and responsive luminophores for volatile organic compounds (VOCs)

2019 ◽  
Vol 48 (4) ◽  
pp. 1179-1183 ◽  
Author(s):  
Mingxue Yang ◽  
Xiao-Ning Li ◽  
Ji-Hui Jia ◽  
Xu-Lin Chen ◽  
Can-Zhong Lu
Keyword(s):  
Volatile Organic Compounds ◽  
Solvent Effect ◽  
Organic Compounds ◽  
Organic Molecules ◽  
Volatile Organic ◽  
First Time

We designed a sensor compound which for the first time combines the solvent effect of ICT organic molecules with large channels adsorbing VOCs.

Sign in / Sign up

Export Citation Format

Share Document