Critical Review of Henry’s Law Constants for Pesticides

Suntio, Leena R.; Shiu, Wan Ying; Mackay, Donald; Seiber, James N.; Glotfelty, Dwight E.

doi:10.1007/978-1-4612-3850-8_1

Cited by 175 publications

(124 citation statements)

References 83 publications

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“…1.2 and by Mackay et al (2014). This fitted value is approximately two orders of magnitude smaller than the dimensionless values for Henry's law constants cited by the U.S. Department of Health and Health Services (USDHHS 1997) and by (Fendinger and Glotfelty 1990;Glotfelty et al 1987;Suntio et al 1987). Other parameters required for simulating volatilization include the diffusion coefficient of pesticide in air (DAIR) and the enthalpy of vaporization (ENPY).…”

Section: Chemical Input Parameter Values Source and Rationalementioning

confidence: 87%

Exposures of Aquatic Organisms to the Organophosphorus Insecticide, Chlorpyrifos Resulting from Use in the United States

Williams

Giddings²,

Purdy³

et al. 2014

Ecological Risk Assessment for Chlorpyrifos in Terrestrial and Aquatic Systems in the United States

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Section: Chemical Input Parameter Values Source and Rationalementioning

confidence: 87%

Exposures of Aquatic Organisms to the Organophosphorus Insecticide, Chlorpyrifos Resulting from Use in the United States

Williams

Giddings²,

Purdy³

et al. 2014

Ecological Risk Assessment for Chlorpyrifos in Terrestrial and Aquatic Systems in the United States

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“…, while Henry's law constants were taken from the summary by Suntio et al (27). Most literature values for soil dissipation half-life represent some unknown combination of the influences of transformation and off-site transport in reducing the concentration of a given compound at the point of measurement (3).…”

Section: )mentioning

confidence: 99%

Occurrence of Pesticides in Shallow Groundwater of the United States: Initial Results from the National Water-Quality Assessment Program

Kolpin

Barbash

Gilliom

1998

Environ. Sci. Technol.

323

200

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The first phase of intensive data collection for the National Water-Quality Assessment (NAWQA) was completed during 1993-1995 in 20 major hydrologic basins of the United States. Groundwater land-use studies, designed to sample recently recharged groundwater (generally within 10 years) beneath specific land-use and hydrogeologic settings, are a major component of the groundwater quality assessment for NAWQA. Pesticide results from the 41 landuse studies conducted during 1993-1995 indicate that pesticides were commonly detected in shallow groundwater, having been found at 54.4% of the 1034 sites sampled in agricultural and urban settings across the United States. Pesticide concentrations were generally low, with over 95% of the detections at concentrations less than 1 µg/L. Of the 46 pesticide compounds examined, 39 were detected. The compounds detected most frequently were atrazine (38.2%), deethylatrazine (34.2%), simazine (18.0%), metolachlor (14.6%), and prometon (13.9%). Statistically significant relations were observed between frequencies of detection and the use, mobility, and persistence of these compounds. Pesticides were commonly detected in both agricultural (56.4%; 813 sites) and urban (46.6%; 221 sites) settings. Frequent detections of pesticides in urban areas indicate that, as is the case with agricultural pesticide use in agricultural areas, urban and suburban pesticide use significantly contribute to pesticide occurrence in shallow groundwater. Although pesticides were detected in groundwater sampled in urban areas and all nine of the agricultural land-use categories examined, significant variations in occurrence were observed among these categories. Maximum contaminant levels (MCLs) established by the U.S. Environmental Protection Agency for drinking water were exceeded for only one pesticide (atrazine, 3 µg/L) at a single location. However, MCLs have been established for only 25 of the 46 pesticide compounds examined, do not cover pesticide degradates, and, at present, do not take into account additive or synergistic effects of combinations of pesticide compounds or potential effects on nearby aquatic ecosystems.

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“…Suntio et al (1988) listed the assumptions upon which the use of H to describe this partitioning is based, described methods for converting between the different forms in which H is expressed, and assembled a compilation of H values for 96 pesticides. The rate of transfer of a pesticide compound between air and water is a function of the contrast between its fugacities in the two phases (Bidleman, 1999).…”

Section: Movement Between Air and Natural Watersmentioning

confidence: 99%

The Geochemistry of Pesticides

Barbash

2014

Treatise on Geochemistry

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Critical Review of Henry’s Law Constants for Pesticides

Cited by 175 publications

References 83 publications

Exposures of Aquatic Organisms to the Organophosphorus Insecticide, Chlorpyrifos Resulting from Use in the United States

Exposures of Aquatic Organisms to the Organophosphorus Insecticide, Chlorpyrifos Resulting from Use in the United States

Occurrence of Pesticides in Shallow Groundwater of the United States: Initial Results from the National Water-Quality Assessment Program

The Geochemistry of Pesticides

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