Stationary Source Characterization and Control Strategies for Reactive Volatile Organic Compounds

1989 ◽  
pp. 1015-1019
Author(s):  
G.B. Martin
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Control Strategies ◽  
Source Characterization ◽  
Stationary Source ◽  
Volatile Organic ◽  
And Control

scholarly journals Geographical Distribution and Risk Assessment of Volatile Organic Compounds in Tributaries of the Han River Watershed

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 956
Author(s):  
Jong-Kwon Im ◽  
Yong-Chul Cho ◽  
Hye-Ran Noh ◽  
Soon-Ju Yu
Keyword(s):  
Volatile Organic Compounds ◽  
South Korea ◽  
Organic Compounds ◽  
Control Strategies ◽  
Anthropogenic Activities ◽  
River Watershed ◽  
Han River ◽  
Detection Frequency ◽  
Volatile Organic ◽  
Mean Concentration

Volatile organic compounds (VOCs), with negative impacts on the aquatic ecosystem, are increasingly released into the environment by anthropogenic activities. Water samples were collected from five areas of the Han River Watershed (HRW) tributaries, South Korea, to detect 11 VOCs, which were classified as halogenated aliphatic hydrocarbons (HAHs) and aromatic hydrocarbons (AHs). Among the 11 VOCs, 1,1-dichloroethylene, 1,1,1-trichloroethane, and vinyl chloride were undetected. The highest concentration compounds were chloroform (0.0596 ± 0.1312 µg/L), trichloroethylene (0.0253 ± 0.0781 µg/L), and toluene (0.0054 ± 0.0139 µg/L). The mean concentration (0.0234 µg/L) and detection frequency (37.0%) of HAHs were higher than those of AHs (0.0036 µg/L, 21.0%, respectively). The Imjin Hantan River area exhibited the highest mean concentration (0.2432 µg/L) and detection frequency (22.9%), because it is located near industrial complexes, thus, highlighting their role as important VOC sources. However, the detected VOCs had lower concentrations than those permitted by the EU, WHO, USA, and South Korea drinking water guidelines. Ecological risks associated with the VOCs were estimated by risk quotient (RQ); consequently, the predicted no-effect concentration was 0.0029 mg/L, and the toluene and styrene RQ values were >1 and >0.5, respectively. The findings may facilitate policymakers in designing pollution control strategies.

Study on Determination Method of the Volatile Organic Compounds Emissions from Particleboards for Indoor Finishing

2011 ◽  
Vol 250-253 ◽  
pp. 935-938 ◽  
Author(s):  
Shi Jing Sun ◽  
Jun Shen ◽  
Zhong Yuan Zhao
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Solid Phase ◽  
Practical Method ◽  
Simple Operation ◽  
Good Shape ◽  
Volatile Organic ◽  
Static Head ◽  
And Control ◽  
Larix Gmelini

In order to comprehensive understand and control volatile organic compounds (VOCs) release from particleboards, this paper takes Larix gmelini particleboard as example and analyzes VOCs by three different methods. First of all, VOCs of Larix gmelini particles were detected by the static head space solid-phase micro-extraction (HS-SPME) technique. Secondly Larix gmelini particleboards were analyzed using the method of adsorbed by activated carbon, desorpted with methylene dichloride and measured by GC/MS. Finally, Tenax-T Thermal desorption -GC/MS was used to qualitative VOCs emissions. The best method for determination VOCs from particleboards was found. SPME is a simple operation method with short time. But the pretreatment of sample was troublesome and it is not easily measured for lower concentration particleboards. Active carbon absorption method is not suitable for quantitative because of much error in extraction. It is suitable for qualitative analysis. Tenax-T is a simple operation way with short analysis time and good shape of chromatographic. It is a convenient and practical method. Further study of VOCs emission of panels can be supported by this method.

UTILIZATION OF NEW TECHNOLOGIES IN AN OHIO RIVER SPILLS DETECTION SYSTEM

1997 ◽  
Vol 1997 (1) ◽  
pp. 323-327
Author(s):  
Jonathan A. McSayles ◽  
Isabel E. Caputa ◽  
Peter A. Tennant
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
New Technologies ◽  
Detection System ◽  
New Technology ◽  
Ohio River ◽  
Water Users ◽  
Ideal System ◽  
Volatile Organic ◽  
And Control

ABSTRACT The Organics Detection System (ODS) is a spill detection network cooperatively operated by the Ohio River Valley Water Sanitation Commission (ORSANCO), 11 water utilities, and 3 industries at strategic locations along the Ohio, Allegheny, Monongahela, and Kanawha rivers. The ODS uses purge and trap gas chromatography to analyze for 20 volatile organic compounds (US EPA, 1986). Since its inception in 1977, the network has undergone several advancements in its ability to monitor, analyze, and detect volatile organic compounds in the Ohio River. The present instrumentation used in the network was purchased from 1986 through 1990. The network's capabilities have progressed to the monitoring of raw intake water 24 hours a day, 7 days a week and processing raw data with computers. The most noticeable advance has been in the use of computers to manipulate chromatograms, generate final reports, and transfer information. Additionally, computers and modems have enhanced communication between ORSANCO and ODS locations by accelerating the dissemination of information to downstream water users, allowing the observation of chromatograms and general troubleshooting. New technology under consideration includes the ability to remotely control a gas Chromatograph, incorporate automated check samples, and control alarm settings and the notification of such alarms. The ideal system would run independently until one of two conditions occurred—a compound exceeded the alarm threshold, or there was an instrument malfunction.

scholarly journals Characterization, sources and reactivity of volatile organic compounds (VOCs) in Seoul and surrounding regions during KORUS-AQ

Elem Sci Anth ◽  
2020 ◽  
Vol 8 ◽  
Author(s):  
Isobel J. Simpson ◽  
Donald R. Blake ◽  
Nicola J. Blake ◽  
Simone Meinardi ◽  
Barbara Barletta ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Control Strategies ◽  
Carbonyl Sulfide ◽  
Fast Response ◽  
Vehicle Exhaust ◽  
Air Samples ◽  
Range Transport ◽  
Volatile Organic ◽  
Research Aircraft

The Korea-United States Air Quality Study (KORUS-AQ) took place in spring 2016 to better understand air pollution in Korea. In support of KORUS-AQ, 2554 whole air samples (WAS) were collected aboard the NASA DC-8 research aircraft and analyzed for 82 C1–C10 volatile organic compounds (VOCs) using multi-column gas chromatography. Together with fast-response measurements from other groups, the air samples were used to characterize the VOC composition in Seoul and surrounding regions, determine which VOCs are major ozone precursors in Seoul, and identify the sources of these reactive VOCs. (1) The WAS VOCs showed distinct signatures depending on their source origins. Air collected over Seoul had abundant ethane, propane, toluene and n-butane while plumes from the Daesan petrochemical complex were rich in ethene, C2–C6 alkanes and benzene. Carbonyl sulfide (COS), CFC-113, CFC-114, carbon tetrachloride (CCl4) and 1,2-dichloroethane were good tracers of air originating from China. CFC-11 was also elevated in air from China but was surprisingly more elevated in air over Seoul. (2) Methanol, isoprene, toluene, xylenes and ethene were strong individual contributors to OH reactivity in Seoul. However methanol contributed less to ozone formation based on photochemical box modeling, which better accounts for radical chemistry. (3) Positive Matrix Factorization (PMF) and other techniques indicated a mix of VOC source influences in Seoul, including solvents, traffic, biogenic, and long-range transport. The solvent and traffic sources were roughly equal using PMF, and the solvents source was stronger in the KORUS-AQ emission inventory. Based on PMF, ethene and propene were primarily associated with traffic, and toluene, ethylbenzene and xylenes with solvents, especially non-paint solvents for toluene and paint solvents for ethylbenzene and xylenes. This suggests that VOC control strategies in Seoul could continue to target vehicle exhaust and paint solvents, with additional regulations to limit the VOC content in a variety of non-paint solvents.

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