Trace organic compounds in rain—II. Gas scavenging of neutral organic compounds

Ligocki, Mary P.; Leuenberger, Christian; Pankow, James F.

doi:10.1016/0004-6981(85)90213-6

Cited by 234 publications

(107 citation statements)

References 15 publications

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“…Washout ratios for SVOCs tend to be much smaller than those reported for trace metals and radio-nuclides [89,90,95]. Vapor scavenging is important especially for SVOCs with low Henry's Law constants; however, deviations from equilibrium partitioning between air and rain have been observed [88].…”

Section: Wet Deposition and Scavengingmentioning

confidence: 99%

“…It is generally assumed that equilibrium is attained rapidly between the vapor phase and the dissolved phase in a raindrop [88]. It has been estimated that equilibrium can be established with the surrounding vapor phase during the time it takes a raindrop to fall a few meters [89,90]. Therefore, vapor washout ratio, W G , has been estimated using air-water equilibrium partition coefficients or Henry's Law contant:…”

Section: Wet Deposition and Scavengingmentioning

confidence: 99%

“…There have been numerous attempts to deduce scavenging ratios for SVOCs by simultaneously measuring rain and ground level air concentrations [89][90][91][92][93][94]. Washout ratios for SVOCs tend to be much smaller than those reported for trace metals and radio-nuclides [89,90,95].…”

Section: Wet Deposition and Scavengingmentioning

confidence: 99%

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Air-sea interactions of semi-volatile organic compounds in the tropical environment of Southeast Asia

Balasubramanian

2010

EPJ Web of Conferences

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Abstract. Major urban and industrial centers increase loadings of semi-volatile organic compounds (SVOCs) to proximate sea waters through riverine transport, atmospheric deposition via dry particle deposition, wet deposition, and air-sea gas exchange. In addition to acting as sinks for SVOCs, oceans can act as sources of SVOCs to coastal atmospheres and play important roles in the global biogeochemistry of SVOCs. Particle-sorbed SVOCs can settle to the ocean surface by dry particle deposition, a uni-directional advective transport process from the atmosphere to the water, the removal rate by which is a function of the physical and chemical properties of the aerosols and bound pollutants, meteorological conditions and surface characteristics. In addition, SVOCs are removed from the atmosphere and transported to the waters by precipitation scavenging of atmospheric vapors and particles, which are incorporated into the rain within or below the clouds. After SVOCs are deposited into the bulk seawater, water-column partitioning can affect the distribution of pollutants between the dissolved aqueous and the solid phases and eventually impact the fate of these compounds in oceans. Other than the abovementioned processes, air-sea exchange can make SVOCs diffuse across the air-sea interface; however, the sea surface microlayer (SML), a unique compartment at the air-sea boundary defined operationally as the upper millimeter (1 ∼ 1000 μm) of the sea surface, has large storage capacity to delay the transport of SVOCs across the interface.This article reports the dry particle deposition and wet deposition of selected SVOCs based on an extensive set of yearly data collected in Singapore. Singapore, a representative country of Southeast Asia (SEA), is a small but highly developed island with dense industrial parks in the Southwestern part, where the terrestrial sources affect the surrounding coasts. In this study, Singapore's Southern coastline was chosen during the Northeast monsoon season to evaluate if this coastal area acts a sink or source for selected SVOCs via air-sea diffusive exchange as well as to investigate the SML enrichment effect.

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Section: Wet Deposition and Scavengingmentioning

confidence: 99%

Section: Wet Deposition and Scavengingmentioning

confidence: 99%

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Air-sea interactions of semi-volatile organic compounds in the tropical environment of Southeast Asia

Balasubramanian

2010

EPJ Web of Conferences

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“…The possible reason might be the re-adsorption of congeners which have dissolved in a raindrop by the scavenged particle, therefore the congeners which have the lowest solubility for PCDD/Fs and PCBs should be more precise. It was found that φ increased as the number of chlorinated substitutes increased (Ligocki et al, 1985b); the higher chlorinated congeners were more predominant in the particle phase. Furthermore, ambient temperature also affects the gas particle distribution of SVOCs.…”

Section: Introductionmentioning

confidence: 97%

“…S p : particle scavenging ratio of SVOCs (dimensionless) C rain,particle : particle-phase concentration of SVOCs in the raindrop C p : concentration of SVOCs in the particle phase Total scavenging of precipitation (S tot ) is defined as the sum of gas and particle scavenging, which can be calculated as follows (Bidleman, 1988;Ligocki et al, 1985a):…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Deposition Modeling of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans and Polychlorinated Biphenyls in the Ambient Air of Southern Taiwan. Part II. Wet Depositions and Total Deposition Fluxes

Tseng

Hsieh

et al. 2014

Aerosol Air Qual. Res.

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Unsaturated Halogenated Hydrocarbons

Belpoggi,

Tibaldi,

Gnudi

et al. 2023

Patty's Toxicology

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This chapter contains details on 12 unsaturated halogenated hydrocarbons. The considered chemicals are 1,3‐dichloropropene (DCP), cis ‐ and trans ‐1,2‐dichloroethylene (DCE), dichloroacetylene (DCA), allyl chloride (AC), hexachlorobutadiene (HCBD), β‐chloropropene, vinylidene chloride (VDC), vinyl chloride (VC), vinyl bromide (VB), vinyl fluoride (VF), trichloroethene (TCE), and tetrachloroethene (PCE). These compounds are used as fumigants, pesticides, solvents, and chemical intermediates. This chapter follows the outline determined for compounds and includes physical and chemical properties, production and use, exposure assessment in air and workplace, toxic effects (experimental and epidemiological studies), community methods for monitoring, regulations, and guidelines.

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Trace organic compounds in rain—II. Gas scavenging of neutral organic compounds

Cited by 234 publications

References 15 publications

Air-sea interactions of semi-volatile organic compounds in the tropical environment of Southeast Asia

Air-sea interactions of semi-volatile organic compounds in the tropical environment of Southeast Asia

Atmospheric Deposition Modeling of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans and Polychlorinated Biphenyls in the Ambient Air of Southern Taiwan. Part II. Wet Depositions and Total Deposition Fluxes

Unsaturated Halogenated Hydrocarbons

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