Holding Times of Volatile Organics in Water

2009 ◽  
pp. 179-179-27
Author(s):  
DW Bottrell ◽  
JF Fisk ◽  
GL Robertson ◽  
JD Petty ◽  
CH Dempsey ◽  
...  
Keyword(s):  
Volatile Organics

Stable Semiconducting Ink Based on a Polypyrrole/Carbon-Quantum-Dot Aqueous Colloidal Suspension: A Potential Sensor for Volatile Organics Present in Food

2017 ◽  
Vol 2 (6) ◽  
pp. 2139-2143 ◽  
Author(s):  
Lopamudra Bhattacharjee ◽  
Kallol Mohanta ◽  
Joghee Ravichandran ◽  
Rama R. Bhattacharjee
Keyword(s):  
Quantum Dot ◽  
Colloidal Suspension ◽  
Volatile Organics ◽  
Carbon Quantum Dot

On the Use of SIFT-MS and PTR-MS Experiments to Explore Reaction Mechanisms in Plasmas of Volatile Organics: Siloxanes

2011 ◽  
Vol 8 (4) ◽  
pp. 287-294 ◽  
Author(s):  
David A. Steele ◽  
Robert D. Short ◽  
Philip Brown ◽  
Chris A. Mayhew
Keyword(s):  
Reaction Mechanisms ◽  
Volatile Organics

Head space voltammetry: A novel voltammetric method for volatile organics and a case study for phenol

Talanta ◽  
2012 ◽  
Vol 98 ◽  
pp. 34-39 ◽  
Author(s):  
K. Volkan Özdokur ◽  
Levent Pelit ◽  
Hasan Ertaş ◽  
Suna Timur ◽  
F. Nil Ertaş
Keyword(s):  
Volatile Organics ◽  
Voltammetric Method ◽  
Head Space

scholarly journals Wintertime aerosol chemical composition, volatility, and spatial variability in the greater London area

2016 ◽  
Vol 16 (2) ◽  
pp. 1139-1160 ◽  
Author(s):  
L. Xu ◽  
L. R. Williams ◽  
D. E. Young ◽  
J. D. Allan ◽  
H. Coe ◽  
...  
Keyword(s):  
Biomass Burning ◽  
Solid Fuel ◽  
Field Studies ◽  
Rural Site ◽  
Urban Site ◽  
High Temporal Resolution ◽  
Volatile Organics ◽  
Aerosol Mass ◽  
Rural And Urban ◽  
Wide Range

Abstract. The composition of PM1 (particulate matter with diameter less than 1 µm) in the greater London area was characterized during the Clean Air for London (ClearfLo) project in winter 2012. Two high-resolution time-of-flight aerosol mass spectrometers (HR-ToF-AMS) were deployed at a rural site (Detling, Kent) and an urban site (North Kensington, London). The simultaneous and high-temporal resolution measurements at the two sites provide a unique opportunity to investigate the spatial distribution of PM1. We find that the organic aerosol (OA) concentration is comparable between the rural and urban sites, but the contribution from different sources is distinctly different between the two sites. The concentration of solid fuel OA at the urban site is about twice as high as at the rural site, due to elevated domestic heating in the urban area. While the concentrations of oxygenated OA (OOA) are well-correlated between the two sites, the OOA concentration at the rural site is almost twice that of the urban site. At the rural site, more than 70 % of the carbon in OOA is estimated to be non-fossil, which suggests that OOA is likely related to aged biomass burning considering the small amount of biogenic SOA in winter. Thus, it is possible that the biomass burning OA contributes a larger fraction of ambient OA in wintertime than what previous field studies have suggested. A suite of instruments was deployed downstream of a thermal denuder (TD) to investigate the volatility of PM1 species at the rural Detling site. After heating at 250 °C in the TD, 40 % of the residual mass is OA, indicating the presence of non-volatile organics in the aerosol. Although the OA associated with refractory black carbon (rBC; measured by a soot-particle aerosol mass spectrometer) only accounts for < 10 % of the total OA (measured by a HR-ToF-AMS) at 250 °C, the two measurements are well-correlated, suggesting that the non-volatile organics have similar sources or have undergone similar chemical processing as rBC in the atmosphere. Although the atomic O : C ratio of OOA is substantially larger than that of solid fuel OA and hydrocarbon-like OA, these three factors have similar volatility, which is inferred from the change in mass concentration after heating at 120 °C. Finally, we discuss the relationship between the mass fraction remaining (MFR) of OA after heating in the TD and atomic O : C of OA and find that particles with a wide range of O : C could have similar MFR after heating. This analysis emphasizes the importance of understanding the distribution of volatility and O : C in bulk OA.

Rapid Growth of Zinc Oxide Nanotube–Nanowire Hybrid Architectures and Their Use in Breast Cancer-Related Volatile Organics Detection

Nano Letters ◽  
2016 ◽  
Vol 16 (5) ◽  
pp. 3014-3021 ◽  
Author(s):  
Giwan Katwal ◽  
Maggie Paulose ◽  
Irene A. Rusakova ◽  
James E. Martinez ◽  
Oomman K. Varghese
Keyword(s):  
Breast Cancer ◽  
Zinc Oxide ◽  
Rapid Growth ◽  
Volatile Organics ◽  
Hybrid Architectures
Sign in / Sign up

Export Citation Format

Share Document