Accumulation of lead, zinc, copper and cadmium by 12 wetland plant species thriving in metal-contaminated sites in China

Deng, Huanguang; Ye, Z. H.; Wong, Ming Hung

doi:10.1016/j.envpol.2004.03.030

Cited by 533 publications

(257 citation statements)

References 24 publications

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“…One method of phytoremediation is phytoextraction, which uses metal-accumulating plants to remove pollutants from contaminated soils by concentrating them in the harvestable aboveground parts (Salt et al 1998). Previous studies have shown that some aquatic macrophytes can accumulate large amounts of heavy metals in their organs (Deng et al 2004;Kamal et al 2004). In addition, some scientists have also studied the phytoremediation of aquatic macrophytes for contaminated sediments (Audet and Charest 2007).…”

Section: Introductionmentioning

confidence: 99%

Influence of humic acids on the accumulation of copper and cadmium in Vallisneria spiralis L. from sediment

Wang

Cheng

et al. 2010

Environ Earth Sci

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Physiological responses and metal accumulation in Vallisneria spiralis L. exposed to copper and cadmium contaminated sediment were examined at different metal concentrations and the influence of humic acids on copper and cadmium accumulation was also studied. The plants of V. spiralis accumulated high amount of copper and cadmium. The maximum accumulation of 396 and 114 mg kg -1 DW copper were found in the roots and shoots, respectively, at 614 mg kg -1 DW after 21 days' copper exposure; they were 63.8 and 48.0 mg kg -1 DW for cadmium at 88.69 mg kg -1 DW. The plants showed decrease in chlorophyll content with the increasing concentration of copper/cadmium in sediment. With addition of humic acids from 3.09 to 7.89 g kg -1 DW, both copper and cadmium accumulation in V. spiralis were significantly inhibited (p \ 0.01). The cadmium concentrations of roots and shoots of plant decreased 26.4-50.3 and 14.3-33.0% under cadmium treatments, respectively; copper accumulation decreased much more with 44.0-77.0 and 35.0-62.7%, respectively. It was concluded that V. spiralis appeared to be an ideal candidate for the phytoremediation of copper and cadmium polluted sediments, and humic acids had an important role in regulating copper and cadmium bioavailability and toxicity in sediments.

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Section: Introductionmentioning

confidence: 99%

Influence of humic acids on the accumulation of copper and cadmium in Vallisneria spiralis L. from sediment

Wang

Cheng

et al. 2010

Environ Earth Sci

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“…Thus, the use of biomonitors living and growing in intertidal zone could yield valuable information not only on the presence of anthropogenic stressors but, more importantly, on the adverse influence the stressors are having on the environment (Ngayila et al 2009;Chang et al 2009). According to the different capacity for metal uptake, species able to accumulate relatively high metal concentrations in the aboveground tissues could be good candidates for phytoextraction (Deng et al 2004). In the intertidal zone of the Yellow River estuary, S. salsa is the most prevalent halophytes and it has strong adaptations to environmental stresses (such as high salinity, flooding, and sediment burial) (Han et al 2005).…”

Section: Variations Of Heavy Metals In Plants and Sedimentsmentioning

confidence: 99%

“…There has been intensely increasing interest in understanding the pollution of heavy metals in coastal marsh due to the great influences of human activities (Li et al 2000(Li et al , 2007Caeiro et al 2005;Abrahim and Parker 2008;Bai et al 2011Bai et al , 2012Xiao et al 2013). Exploring heavy metal accumulation in plants for the remediation (or phytoremediation) of coastal environment is of great significance (Chaney et al 1997;Deng et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Temporal variations and bioaccumulation of heavy metals in different Suaeda salsa marshes of the Yellow River estuary, China

Song

Sun

2014

Environ Sci Pollut Res

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To understand the temporal variations and bioaccumulation of heavy metals in the coastal marshes, the concentrations of heavy metals (Cr, Ni, Pb, and Cu) in the two Suaeda salsa marshes [middle S. salsa marsh (MM) and low S. salsa marsh (LM)] of the Yellow River estuary were determined from May to November in 2008 by in situ sampling and inductively coupled plasma mass spectrometry (ICP-MS) analysis. Results showed that heavy metal concentrations in S. salsa of MM and LM were generally in the order of Cu>Cr>Pb>Ni, while those in sediments fell in the order of Cr>Ni>Cu>Pb. Heavy metal concentrations of S. salsa in MM and LM were different, and significant differences were observed in stems (F = 4.797, p= 0.046) and litters (F=6.799, p=0.026) for Ni. Litter was the main stock of heavy metals, and the allocations of Cr, Ni, and Pb reached 31. .64 % (in LM), respectively. The ratios of roots/ leaves (R/L) and roots/stems (R/S) for Cr and Ni in MM were mostly greater than 1, while those ratios in LM were mostly less than 1, indicating that Cr and Ni in S. salsa at LM had greater mobility compared with those at MM. Moreover, the [accumulation factor, AF] plant of Cr, Ni, Cu, and Pb in LM, especially [AF] root and [AF] stem of Cr and [AF] litter of Ni, was also higher than that in MM. These indicated that S. salsa grown in LM was more suitable for potential biomonitor or phytoremediation of Cr, Ni, Cu, and Pb if intertidal sediments were seriously contaminated with an increase of pollutant loading (especially heavy metals) in the Yellow River estuary. The use of biomonitor (S. salsa) living and growing in LM could yield valuable information not only on the presence of anthropogenic stressors, but, more importantly, on the adverse influence the stressors are having on the environment.

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“…Typha latifolia, Canna indic and Phragmites australis, are well known hyperaccumulating emergent plants. There is evidence that these plants can accumulate Cu, Zn, Cr, Ni, Pb and Cd in their tissues (Ye et al 1997a, b;Deng et al 2004;Sasmaz et al 2008). The knowledge about the abilities of different wetland plant species or tissues to absorb and transport metals under different conditions will provide insight into choosing appropriate plants for wetland phytoremediation systems.…”

Section: Introductionmentioning

confidence: 99%

Determining the fluxes of ions (Pb2+, Cu2+ and Cd2+) at the root surface of wetland plants using the scanning ion-selective electrode technique

Peijnenburg

et al. 2016

Plant Soil

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Background and aims Measuring specific ion fluxes from different regions of the root under practical physiological conditions is crucial for understanding metal uptake mechanisms by plants. Methods We developed and tested a neutral carrierbased liquid-membrane Pb 2+ and Cu 2+ ion selective microelectrode (ISME) to investigate ion-transport processes along the roots of three common wetland plant species. Results The Pb 2+ and Cu 2+ ISME exhibited a Nernstian response with Pb 2+ and Cu 2+ activities as low as 1.0 nM and 1.0 μM in deionized water and simulated soil solution, respectively. Phragmites australis had a region of Cu 2+ release for approximately the first 200 μm, while it exhibited Pb 2+ and Cd 2+ outward net flux up to the first 500 μm. Although in older sections of the root of Phragmites australis there were areas of influx of Cu 2+ , Pb 2+ and Cd 2+ , the overall influx was much smaller than that of Typha latifolia or Canna indica. Such a reduced uptake and/or an increased efflux of metal ions across the root-cell plasma-membrane might explain the higher resistance of Phragmites australis to metals, at least in part. Conclusions The Pb 2+ and Cu 2+ ISMEs are shown to permit detailed investigation of heavy-metal ion transport in plant roots, especially for plants used for phytoremediation.

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Accumulation of lead, zinc, copper and cadmium by 12 wetland plant species thriving in metal-contaminated sites in China

Cited by 533 publications

References 24 publications

Influence of humic acids on the accumulation of copper and cadmium in Vallisneria spiralis L. from sediment

Influence of humic acids on the accumulation of copper and cadmium in Vallisneria spiralis L. from sediment

Temporal variations and bioaccumulation of heavy metals in different Suaeda salsa marshes of the Yellow River estuary, China

Determining the fluxes of ions (Pb2+, Cu2+ and Cd2+) at the root surface of wetland plants using the scanning ion-selective electrode technique

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