Dissipation of pesticides from soil by volatilization of degradation products. I. Lindane and DDT

Cliath, M. M.; Spencer, W. F.

doi:10.1021/es60069a010

Cited by 60 publications

(22 citation statements)

References 11 publications

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“…The vapor pressure of PCCH (r-l,3,4,5,6,pentachlorocyclohexane), a metabolite of lindane, was 14 times greater than that of lindane (29). Thus, much of the lindane volatilized from soil would be in the form of PCCH.…”

Section: Properties Of Pesticide Degradation Productsmentioning

confidence: 99%

“…The vapor pressure of p-p'-DDE is 8 times greater than that of p-p'-DDT. In well-aerated soils, DDT is converted to DDE, and most of the volatilization occurs in the form of DDE (29). Thus, because of the high vapor pressure, metabolites of DDT and lindane volatilize more readily than do their parent compounds.…”

Section: Properties Of Pesticide Degradation Productsmentioning

confidence: 99%

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Pesticide Transformation Products in the Environment

Somasundaram

Coats

1991

ACS Symposium Series

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Section: Properties Of Pesticide Degradation Productsmentioning

confidence: 99%

Section: Properties Of Pesticide Degradation Productsmentioning

confidence: 99%

Pesticide Transformation Products in the Environment

Somasundaram

Coats

1991

ACS Symposium Series

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“…Pesticides have received the most attention, since they are used on food crops and are applied to large areas of the environment (14)(15)(16)(17). The ubiquitous nature of chlorinated hydrocarbon pesticide residues was a major factor in demonstrating the important role of behavior of a chemical in the environment (10,12,14,15,(17)(18)(19)(20)(21)(22). However, pesticides are not unique chemicals which predispose them to become environmental contaminants.…”

Section: Introductionmentioning

confidence: 99%

“…The chemicals used as starting materials or intermediates in manufacture may end up as residues in air through vaporization (14,15,24,(28)(29)(30), in surface and underground water through contact and leaching (18,(31)(32)(33)(34), by sewage effluents (1,4), or in soil through adsorption (19,23,29,(35)(36)(37). All of these points of release are potential sources for widespread contamination.…”

Section: Introductionmentioning

confidence: 99%

Chemodynamics: transport and behavior of chemicals in the environment--a problem in environmental health.

Freed¹,

Chiou²,

Haque³

1977

Environ Health Perspect

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In the manufacture and use of the several thousand chemicals employed by technological societies, portions of these chemicals escape or are intentionally introduced into the environment. The behavior, fate, and to some extent the effects produced by these chemicals are a result of a complex interaction of the properties of the chemical with the various processes governing transport, degradation, sequestration, and uptake by organisms. In addition, such processes as adsorption, evaporation, partitioning, and degradation are influenced by ambient conditions of temperature, air movement, moisture, presence of other chemicals, and the concentration and properties of the subject chemicals. These influence the level and extent of exposure to these chemicals that man might receive. Study of the physicochemical properties of compounds in relation to these various processes has provided a basis for better understanding of the quantitative behavior. Such information is useful in development of predictive models on behavior and fate of the chemicals in relation to human exposure. Beyond this, it provides information that could be used to devise procedures of manufacture, use, and disposal that would minimize environmental contamination. Some of the physical principles involved in chemodynamics are presented in this review.

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“…chemical breakdown, photodegradation) (Bosch et al, 2015). Experiments have shown that approximately 66% of DDT applied to agricultural fields is transformed into DDE within one year (Cliath et al, 1972). A DDD/DDE ratio greater than 1 indicates that aerobic degradation is the main pathway of DDT loss.…”

mentioning

confidence: 99%

Status of POPs accumulation in the Yellow River Delta: From distribution to risk assessment

Chen

2016

Marine Pollution Bulletin

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The Yellow River Delta (YRD) is a large region of China with complex pollution sources and a long history of environmental deterioration. Despite this, relatively little data exists on the status of important contaminants of concern in this region. Here, we review the literature on the status of key persistent organic pollutants (POPs) of concern including organochlorine pesticides (OCPs), polycyclic aromatic hydrocarbons (PAHs), and polychlorinated biphenyls (PCBs) in the YRD. Sources, source identification methods, and spatial distribution patterns are presented. Additionally, POPs contamination levels reported in the literature were evaluated against popular regulatory limits worldwide to form a basis for overall environmental health. Our review determined that OCPs in the YRD originated mainly from current pesticide use and past agricultural pesticide application. Sources of PAHs included petrochemical inputs, coal fired plants, and wood combustion. PCB levels were impacted by the petrochemical industry as well as waste disposal of PCB containing equipment. OCPs exhibited a spatial distribution pattern that increased along the urban-rural gradient, while the opposite was seen for PAHs and PCBs. Comparisons of POPs contamination levels in the YRD with popular regulatory limits suggest that the extent of PCB contamination all mediums (sediment, soil, water, and biota) exceeded that of PAHs and OCPs. Overall pollution levels in the YRD seem to be in control; however, levels from heavily polluted point sources raise numerous concerns about the ecological health of the region and require more attention from regulatory authorities.

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Dissipation of pesticides from soil by volatilization of degradation products. I. Lindane and DDT

Cited by 60 publications

References 11 publications

Pesticide Transformation Products in the Environment

Pesticide Transformation Products in the Environment

Chemodynamics: transport and behavior of chemicals in the environment--a problem in environmental health.

Status of POPs accumulation in the Yellow River Delta: From distribution to risk assessment

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