Chemical dynamics of persistent organic pollutants: a sensitivity analysis relating soil concentration levels to atmospheric emissions

Article Abstract:

A two-compartment dynamic framework, based on the uncertainty and diversity of environmental systems, was used to evaluate the deposition of air emissions in soil. By analyzing the global mass equilibrium of polychlorinated dibenzo-p-dioxins and dibenzofurans, it was shown that the presence of landscape properties account for the differences in deposition and source emissions. It was also revealed that using the lower bound values of deposition velocity, vapor pressure and atmospheric thickness yields lesser discrepancies in measurements.

Air Pollution Control R&D, Soils, Composition, Organic wastes, Air pollution research

---

Modeling volatilization of PCDD/F from soil and uptake into vegetation

Article Abstract:

An investigation of the sorption of polychlorinated dibenzo-p-dioxins and furans (PCDD/F), a volatile organic chemical, from soil and air into plants shows that sorption is more likely from air. PCDD/F desorption from soil plays a minor role in the contamination of the agricultural food chain. However, soils highly polluted by PCDD/F is a primary source of air contamination when volatilization occurs.

Pollution Control R&D, Plants, Plants (Organisms), Soil pollution, Contamination, Volatile organic compounds

---

Generic one-compartment model for uptake of organic chemicals by foliar vegetation

Article Abstract:

A generic one-compartment model to measure organic chemical uptake is developed using simplified multimedia factors. The model integrates translocation to shoots, gaseous deposition on leaves, volatilization from leaves and other processes. The technique generates a unique equation for uptake into aerial plant compartment and exhibits an adaptability that makes it better than regression analysis.

Models, Organic compounds, Vegetation dynamics, Foliar diagnosis

Similar abstracts:

• Abstracts: Distinguishing the contributions of residential wood combustion and mobile source emissions using relative concentrations of dimethylphenanthrene isomers
• Abstracts: Thermodynamic law of corresponding shock states in flexible polymeric foams. High strain extension of open-cell foams
• Abstracts: Evidence for a decline in atmospheric emissions of PCDD/Fs in the U.K. Isotopic character of lead deposited from the atmosphere at a grassland site in the United Kingdom since 1860
• Abstracts: Determination of Cu and Cd content of groundwater colloids by solid sampling graphite furnace atomic absorption spectrometry
• Abstracts: Matrix-enhanced degradation of p,p'-DDT during gas chromatographic analysis: a consideration. Multidimensional gas chromatographic analysis of toxaphene

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.