Accumulation and phytoavailability of benzo[a]pyrene in an acid sandy soil

Xing, Weiqin; Luo, Yongming; Wu, Longhua; Song, Jian; Christie, Peter

doi:10.1007/s10653-005-9026-9

Cited by 9 publications

(8 citation statements)

References 14 publications

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“…Similar research results have been reported for other plants [26]. A study on the accumulation of B[a]P in ryegrass found that the ryegrass shoot B[a]P concentration tended to increase with soil B[a]P, but the differences were not significant [27]. Another study on the fate of 14 C-labelled B[a]P discharged to soil by the way of contaminated by sewage sludge found that the B[a]P is poorly transferred to wheat seedlings after a 45-day period of growth [28].…”

Section: B[a]p Contents Of Rice Stem and Leafsupporting

confidence: 87%

Studies on the sources of benzo[a]pyrene in grain and aboveground tissues of rice plants

Stagnitti

et al. 2009

Journal of Hazardous Materials

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Section: B[a]p Contents Of Rice Stem and Leafsupporting

confidence: 87%

Studies on the sources of benzo[a]pyrene in grain and aboveground tissues of rice plants

Stagnitti

et al. 2009

Journal of Hazardous Materials

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“…In contrast, shoot biomass of Holcus increased in the presence of HCH. Ryegrass biomass was also shown to increase in the presence of benzo[a]pyrene (Xing et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Rhizosphere microbial community and hexachlorocyclohexane degradative potential in contrasting plant species

et al. 2007

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The organochlorine 1,2,3,4,5,6 hexachlorocyclohexane (HCH) is a broad-spectrum insecticide that was used on a large-scale worldwide. The soilplant-microbe system and its influence on HCH biodegradation are evaluated. A greenhouse experiment was designed to evaluate HCH dissipation and several microbial parameters among rhizosphere and bulk soil of two contrasting plants, Cytisus striatus (Hill) Rothm and Holcus lanatus L. Plants were grown for 180 days in three treatments: uncontaminated soil (control), uncontaminated soil inoculated with soil (3% w/w) from a HCH-contaminated site (INOC), and uncontaminated soil inoculated with soil (3% w/w) from the HCH-contaminated site and artificially contaminated to obtain 100 mg HCH kg −1 dry soil (100HCH-INOC). At harvest, plant biomass, soil water-extractable organic C, pH and Cl concentration, rhizosphere microbial densities (total heterotrophs, ammonifiers, amylolytics) and C substrate utilization patterns, and degradation of α-, β-, δ-and γ-HCH isomers were determined in bulk and rhizosphere soils. Soil solution Cl concentration was determined every 30 days throughout the entire growth period. Results demonstrate that both Cytisus striatus and Holcus lanatus can grow in soils with up to 100 mg HCH kg −1 . An enhanced degradation of α-HCH, but not β-or δ-HCH, was observed in the rhizosphere. Significant changes in the microbial densities were observed between bulk and rhizosphere soils of Cytisus, and an increase in C source utilization indicated changes in community level physiological profiles (CLPP) in the rhizosphere of this species when grown in contaminated soils. HCH dissipation was also greater in soils planted with this species. In accordance, increases in soil extractable C, Cl concentration and acidity were greater at the rhizosphere of Cytisus. Concentration of Cl in soil solutions also indicates greater HCH dechlorination in soils planted with Cytisus than Holcus. Results suggest that phytostimulation of bacteria present or added to soil is a promising approach to cleaning HCHcontaminated sites, and especially for biodegradation of α-HCH.

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“…In many studies, the plant uptake and accumulation amount of PAHs was very little (about 0.005-0.24% in total PAHs amount [10,14,[32][33][34]) and the uptake of PAHs might come from the air and not from the soil [10,34], so in this work the amount of plant uptake and accumulation were not determined and calculated. The most of phytoremediation studies were conducted under aerobic conditions and exposed to the sunlight, therefore, offered the possibility of abiotic losses of PAHs during the treatment.…”

Section: Contribution Proportions Of Abiotic Losses Indigenous Micromentioning

confidence: 96%

Roles of abiotic losses, microbes, plant roots, and root exudates on phytoremediation of PAHs in a barren soil

Sun¹,

Cang²,

Wang³

et al. 2010

Journal of Hazardous Materials

186

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Accumulation and phytoavailability of benzo[a]pyrene in an acid sandy soil

Cited by 9 publications

References 14 publications

Studies on the sources of benzo[a]pyrene in grain and aboveground tissues of rice plants

Studies on the sources of benzo[a]pyrene in grain and aboveground tissues of rice plants

Rhizosphere microbial community and hexachlorocyclohexane degradative potential in contrasting plant species

Roles of abiotic losses, microbes, plant roots, and root exudates on phytoremediation of PAHs in a barren soil

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