Current issues and uncertainties in the measurement and modelling of air–vegetation exchange and within-plant processing of POPs

Barber, Jonathan L.; Thomas, Gareth O.; Kerstiens, Gerhard; Jones, Kevin C.

doi:10.1016/j.envpol.2003.08.024

Cited by 188 publications

(133 citation statements)

References 202 publications

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“…The variation of BFRs in the plants depends on the air concentrations and the partitioning between air and plant, in addition to various ambient variables such as wind speed, temperature, and humidity. 33 The relationships between concentrations in plant leaves and those in the gaseous phase, atmospheric particles, and LSPs and ambient variables were therefore investigated for individual BFRs separately (Table 2). BFRs in plants showed no clear relationships with the BFRs in the atmospheric particles with the exception of deca-BDE in eucalyptus leaves showing a significantly negative relationship (r = −0.67, p < 0.05).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Plant Uptake of Atmospheric Brominated Flame Retardants at an E-Waste Site in Southern China

Tian

Chen

Wang

et al. 2012

Environ. Sci. Technol.

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Brominated flame retardants (BFRs) were measured in eucalyptus leaves and pine needles as well as the leaf surface particles (LSPs) of the two species at an e-waste site in southern China in 2007−2008. The monthly concentrations of total BFRs in the eucalyptus leaves and pine needles were in range of 30.6−154 and 15.1−236 ng/g dry weight, respectively, and relatively higher concentrations were observed in winter and spring. Correlation analysis of BFR concentrations and comparison of PBDE compositions between the plants and LSPs, air (gaseous and particle-bound phases), and ambient variables were conducted. The results revealed that BFRs in the plants, especially for less brominated BFRs, showed positive relationships with BFRs in the LSPs and negative relationships with the gaseous BFRs and ambient temperature. The PBDE profiles in the plants were similar to the gaseous profile for low brominated BDEs (di-through hexa-BDEs) and to the LSP profiles for highly brominated BDEs (hepta-through decaBDEs). Applying McLachlan's framework to our data suggests that the uptake of BFRs was controlled primarily by gaseous partitioning equilibrium for compounds with log octanol-air partition coefficients (K OA ) < 12 and by particle-bound deposition for compounds with log K OA > 13. Different relationships between the plant/air partition coefficient (K PA ) and K OA , which depend on the uptake mechanisms, were observed for polybrominated diphenyl ethers (PBDEs). This paper adds to the current knowledge of the factors and mechanisms governing plant uptake of semivolatile organic compounds with relatively high K OA in the environment.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Plant Uptake of Atmospheric Brominated Flame Retardants at an E-Waste Site in Southern China

Tian

Chen

Wang

et al. 2012

Environ. Sci. Technol.

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“…Although two studies from one group show the latter with better recoveries that the former, the opposite was seen by Ratola et al (2006). These differences may be due to the use of different pine species by both groups (P. sylvestris and P. pinea, respectively) and the still existing gaps and uncertainties pointed out by two reviews (Barber et al, 2004;Desalme et al, 2013) in the understanding of the air-vegetation partition of PAHs, despite the number of different models attempted for its description. Since the intention of the current work is to make a comparison between samples, the key concern is to have all of them passing through the same handling/extraction/quantification procedure, to avoid differences in the systematic errors associated.…”

Section: Sampling and Sample Analysismentioning

confidence: 96%

Relationship between levels of polycyclic aromatic hydrocarbons in pine needles and socio-geographic parameters

Fernández-Varela

Ratola

Alves

et al. 2015

Journal of Environmental Management

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The ability of pine needles to capture polycyclic aromatic hydrocarbons (PAHs) from the surrounding air is well known. In this work the current knowledge of this affinity will be enhanced, investigating the plausible links between the concentrations of PAHs found in pine needles collected in different sites in Portugal, and several socio-geographic variables with environmental relevance. Canonical correlation analysis (CCA) has proven to be a suitable and innovative technique to look for relationships within environmental datasets. In the current work, CCA will simultaneously include chemical information (concentration of PAHs found in pine needles) and socio-geographic information associated to the sampling areas. In order to be more robust in these conclusions, Pinus pinea and Pinus pinaster species were considered separately, allowing an accurate direct comparison between them. The information concerning the different seasons and land occupation was also taken into account. Our results demonstrate how CCA can be a useful tool in environmental impact assessment, and highlight the importance of pine needles as trustful biomonitors of the influence of socio-geographic parameters on the levels of PAHs in a given area.

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“…The cuticle consists of several lipid or lipid-like components including cutin, cutan, and extractable waxes that exhibit varying affinities for organic contaminants [1,4,5]. It is also possible, but less likely to be significant for neutral hydrophobic chemicals (1 < log 10 octanolwater partition coefficient [K OW ] < 8), that organic contaminants can sorb to the nonlipid organic matter fractions of leaves.…”

Section: Introductionmentioning

confidence: 99%

A review of measured bioaccumulation data on terrestrial plants for organic chemicals: Metrics, variability, and the need for standardized measurement protocols

Doucette

Shunthirasingham

Dettenmaier³

et al. 2017

Enviro Toxic and Chemistry

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Quantifying the transfer of organic chemicals from the environment into terrestrial plants is essential for assessing human and ecological risks, using plants as environmental contamination biomonitors, and predicting phytoremediation effectiveness. Experimental data describing chemical uptake by plants are often expressed as ratios of chemical concentrations in the plant compartments of interest (e.g., leaves, shoots, roots, xylem sap) to those in the exposure medium (e.g., soil, soil porewater, hydroponic solution, air). These ratios are generally referred to as "bioconcentration factors" but have also been named for the specific plant compartment sampled, such as "root concentration factors," "leaf concentration factors," or "transpiration stream (xylem sap) concentrations factors." We reviewed over 350 articles to develop a database with 7049 entries of measured bioaccumulation data for 310 organic chemicals and 112 terrestrial plant species. Various experimental approaches have been used; therefore, interstudy comparisons and data-quality evaluations are difficult. Key exposure and plant growth conditions were often missing, and units were often unclear or not reported. The lack of comparable high-confidence data also limits model evaluation and development. Standard test protocols or, at a minimum, standard reporting guidelines for the measurement of plant uptake data are recommended to generate comparable, high-quality data that will improve mechanistic understanding of organic chemical uptake by plants. Environ Toxicol Chem 2018;37:21-33. C 2017 SETAC

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Current issues and uncertainties in the measurement and modelling of air–vegetation exchange and within-plant processing of POPs

Cited by 188 publications

References 202 publications

Plant Uptake of Atmospheric Brominated Flame Retardants at an E-Waste Site in Southern China

Plant Uptake of Atmospheric Brominated Flame Retardants at an E-Waste Site in Southern China

Relationship between levels of polycyclic aromatic hydrocarbons in pine needles and socio-geographic parameters

A review of measured bioaccumulation data on terrestrial plants for organic chemicals: Metrics, variability, and the need for standardized measurement protocols

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