Modeling the bioconcentration of organic chemicals in plants

Trapp, Stefan; Matthies, Michael; Scheunert, I.; Topp, E.

doi:10.1021/es00078a013

Cited by 186 publications

(102 citation statements)

References 25 publications

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“…But it was notable that even when shoots were grown in unspiked control soil, accumulation of pyrene was detected in the shoots (Table 1). The concentrations of pyrene in shoots grown in unspiked control soil A1 were 0.73 mg/kg, which can only have derived from shoot uptake and accumulation from the atmosphere, probably through the retention of the vapor phase of pyrene on the waxy leaf cuticle (Polder et al, 1995;Trapp et al, 1990). This indicates that the shoot uptake of pyrene from the ambient air, possibly originally volatilized from the soils, was a pathway for pyrene intake by the above-ground parts of vegetables.…”

Section: Plant Uptake and Accumulation Of Pyrenementioning

confidence: 98%

Remediation of soil co-contaminated with pyrene and cadmium by growing maize (Zea mays L.)

Zhang

Dang

Zheng

et al. 2009

Int. J. Environ. Sci. Technol.

135

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Sites co-contaminated with organic and metal pollutants are common and considered to be a more complex problem as the two components often causes a synergistic effect on cytotoxicity. Phytoremediation has been proposed as a cost-effective technology for treating heavy metal or organic contamination and may be suitable for remediation of co-contaminated soil. This study investigated the concurrent removal of pyrene and cadmium in cocontaminated soil by growing maize in a pot experiment. At the end of 60 day culture, pyrene in spiked soil diminished significantly, accounting for 21-31 % of the initial extractable concentration in unplanted soil and 12-27 % in planted soil. With the increment of cadmium level, the residual pyrene both in unplanted and planted soil tended to increase. Although the presence of cadmium increased the accumulation of pyrene in maize, plant accumulation only account for less than 0.30 % of the total amount of the dissipated pyrene in vegetated soils. It implied that plant-promoted microbial biodegradation was the predominant contribution to the plant-enhanced dissipation of pyrene in co-contaminated soil. Unlike pyrene, heavy metal cadmium cannot be degraded. It was observed that maize can concurrently removed about on the average 0.70 % of the total cadmium amount in soil by plant uptake, but cadmium phytoextraction would be inhibited under contamination of pyrene. Maize CT38 can normally grow in the co-contaminated soil with high level cadmium and pyrene and can effectively remedy the sites co-contaminated with these two types of contamination, which suggest the possibility of simultaneous phytoremediation of two different contaminant types.

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Section: Plant Uptake and Accumulation Of Pyrenementioning

confidence: 98%

Remediation of soil co-contaminated with pyrene and cadmium by growing maize (Zea mays L.)

Zhang

Dang

Zheng

et al. 2009

Int. J. Environ. Sci. Technol.

135

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“…Radiolabeled compounds have been used in several studies, e.g., Trapp et al [29], but this method 99 is restricted to laboratory or controlled lysimeter studies. In those studies, the concentration of 100 transformation products is usually higher in plants than in soil.…”

mentioning

confidence: 99%

Analysing half-lives for pesticide dissipation in plants

Jacobsen

Fantke

Trapp

2015

SAR and QSAR in Environmental Research

105

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“…This equilibration period was found sufficient for establishing contaminant equilibrium between dried-ground roots/shoots and water. Trapp et al (1990).…”

Section: Sorption With Cutedried Roots/shootsmentioning

confidence: 99%

“…contaminant partition coefficient, plant/tissue composition, and plant growth transpiration rates. Although the observed contaminant levels in plants/crops from earlier studies (e.g., Briggs et al, 1982;Trapp et al, 1990;Gao et al, 2005) appear to fall largely within the defined partition limits (i.e., a pt % 1) (Chiou et al, 2001), more extensive experimental tests are necessary for validation and extension of the model. An essential consequence of the partition uptake is the dependence of contaminant levels on specific plant components, due to variations in local compositions and proximities to the external source.…”

Section: Introductionmentioning

confidence: 98%

“…An understanding of how these parameters affect plant uptake is needed to assess the likely level of crop/plant contamination; this need has promoted a series of investigations on the plant-uptake process in recent time (Briggs et al, 1982(Briggs et al, , 1983Topp et al, 1986;Trapp and Matthies, 1995;Trapp et al, 1990;Riederer, 1990;Paterson et al, 1994;Trapp, 1995;Burken and Schnoor, 1997;Weiss, 2000;Chiou et al, 2001;Li et al, 2002;Trapp, 2004;Gao et al, 2005). Analyses of the levels of nonionic contaminants in plants in relation to the external levels in water (or soil water) from extensive sources have revealed that these contaminants enter plants largely via passive (i.e., partition) process (Briggs et al, 1982;Chiou et al, 2001;Trapp, 2004;Gao et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Bioconcentration of atrazine and chlorophenols into roots and shoots of rice seedlings

Zhu

2006

Environmental Pollution

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Uptakes of o-chlorophenol, 2,4-dichlorophenol, and atrazine at various levels from nutrient solution by roots and shoots of rice seedlings were investigated using a partition-limited model. AbstractAccumulation of o-chlorophenol (CP), 2,4-dichlorophenol (DCP), and atrazine (ATR), as single and mixed contaminants, from hydroponic solutions into roots and shoots of rice seedlings was studied following 48-h exposure of the plant roots. As single contaminants at low levels, the observed bioconcentration factors (BCFs) of CP and DCP with roots approximated the equilibrium values according to the partition-limited model. The BCF of atrazine with roots was about half the partition limit for unknown reasons. The BCFs of CP and ATR with shoots also approximated the partition limits, while the BCF for more lipophilic DCP with shoots was about half the estimated limit, due to insufficient water transport into plants for DCP. As mixed contaminants at low levels, the BCFs with both roots and shoots were comparable with those for the single contaminants; at high levels, the BCFs generally decreased because of the enhanced mixed-contaminant phytotoxicity, as manifested by the greatly reduced plant transpiration rate.

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Modeling the bioconcentration of organic chemicals in plants

Cited by 186 publications

References 25 publications

Remediation of soil co-contaminated with pyrene and cadmium by growing maize (Zea mays L.)

Remediation of soil co-contaminated with pyrene and cadmium by growing maize (Zea mays L.)

Analysing half-lives for pesticide dissipation in plants

Bioconcentration of atrazine and chlorophenols into roots and shoots of rice seedlings

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