scholarly journals Low‐cost FloPump for regulated air sampling of volatile organic compounds

2020 ◽  
Vol 8 (4) ◽  
Author(s):  
Preeti Saryan ◽  
Vinita Gowda
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Low Cost ◽  
Air Sampling ◽  
Volatile Organic

Sprayed liquid–gas extraction of semi-volatile organophosphate malathion from air and contaminated surfaces

2018 ◽  
Vol 10 (21) ◽  
pp. 2503-2511 ◽  
Author(s):  
Mashaalah Zarejousheghani ◽  
Andreas Walte ◽  
Helko Borsdorf
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sampling Method ◽  
Air Sampling ◽  
Gas Extraction ◽  
Volatile Organic

In this study, a new air sampling method termed sprayed liquid–gas extraction (SLGE) was developed for semi-volatile organic compounds.

scholarly journals Formaldehyde and Total VOC (TVOC) Commercial Low-Cost Monitoring Devices: From an Evaluation in Controlled Conditions to a Use Case Application in a Real Building

Chemosensors ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 8 ◽  
Author(s):  
Valérie Goletto ◽  
Geneviève Mialon ◽  
Timothé Faivre ◽  
Ying Wang ◽  
Isabelle Lesieur ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
General Public ◽  
Low Cost ◽  
Qualitative Evaluation ◽  
Experimental Methodology ◽  
Portable Devices ◽  
Test Case ◽  
Controlled Conditions ◽  
Volatile Organic

Formaldehyde and volatile organic compounds (VOCs) are major indoor pollutants with multiple origins. Standard methods exist to measure them that require analytical expertise and provide, at best, an average value of their concentrations. There is a need to monitor them continuously during periods of several days, weeks, or even months. Recently, portable devices have become available. Two categories of portable devices are considered in this research paper: connected objects for the general public (price <500 €) and monitoring portable devices for professional users (price in the range >500 to 5000 €). The ISO method (ISO 16000-29) describes the standard for VOC detector qualification. It is quite complex and is not well adapted for a first qualitative evaluation of these low-cost devices. In this paper, we present an experimental methodology used to evaluate commercial devices that monitor formaldehyde and/or total volatile organic compounds (TVOC) under controlled conditions (23 °C, 50–65% relative humidity (RH)). We conclude that none of the connected objects dedicated to the general public can provide reliable data in the conditions tested, not even for a qualitative evaluation. For formaldehyde monitoring, we obtained some promising results with a portable device dedicated to professional users. In this paper, we illustrate, with a real test case in an office building, how this device was used for a comparative analysis.

Detection and discrimination of volatile organic compounds by noble metal nanoparticle functionalized MoS2 coated biodegradable paper sensors

2020 ◽  
Vol 44 (38) ◽  
pp. 16613-16625
Author(s):  
Radha Bhardwaj ◽  
Venkatarao Selamneni ◽  
Uttam Narendra Thakur ◽  
Parikshit Sahatiya ◽  
Arnab Hazra
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Noble Metal ◽  
Low Cost ◽  
Metal Nanoparticle ◽  
Selective Detection ◽  
Low Concentrations ◽  
Volatile Organic

In the current study, noble metal nanoparticle functionalized MoS2 coated biodegradable low-cost paper sensors were fabricated for the selective detection of low concentrations of volatile organic compounds (VOCs).

Progress in Research of the Combined Adsorption-Photocatalysis for the Removal of Volatile Organic Compounds

2014 ◽  
Vol 1015 ◽  
pp. 540-543
Author(s):  
Bo Tao Lin ◽  
Dong Mei Shi ◽  
Tao Li ◽  
Sen Kuan Meng
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Low Cost ◽  
Photocatalytic Efficiency ◽  
Toxic Chemical ◽  
Air Treatment ◽  
The Past ◽  
Photocatalytic Effect ◽  
Volatile Organic ◽  
Visible Light Photocatalytic

TiO2photocatalytic technology was developed in the past two decades in air treatment because of good photocatalytic effect, non-toxic, chemical stability, low cost, reusable features, the effect use of solar energy. A new composite materials of visible light photocatalytic degradation of low concentration of volatile organic compounds were produced by use of combining the adsorbent with TiO2photocatalytic technology.The adsorbent can enrich concentrations of volatile organic compounds on the surface of the TiO2photocatalyst. In this paper,the mechanism of the combined adsorption-photocatalysis for the removal of volatile organic compounds and immobilization methods、principle、craft were reviewed.The characteristic of the immobilization methods was analysed.It laid the foundation for the optimizing of the immobilization methods and the improving of the photocatalytic efficiency.

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