Environmental geochemistry of heavy metal contaminants in soil and stream sediment in Panzhihua mining and smelting area, Southwestern China

Teng, Yanguo; Tuo, Xianguo; Ni, Shijun; Zhang, Chengjiang; Xu, Zhengqi

doi:10.1007/bf02842869

Cited by 34 publications

(5 citation statements)

References 19 publications

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“…The world class magmatic deposits of V-Ti magnetite in Panzhihua provide 20% of iron (Fe), 64% of vanadium (V) and 53% of titanium (Ti) supply for China [23] . Long-term mining activities have contaminated soils and sediments in Panzhihua by metals, especially by V, Ti and Fe [24] . The redox-sensitive vanadium is toxic to soil microorganisms and plants [25] .…”

Section: Introductionmentioning

confidence: 99%

Culturable Heavy Metal-Resistant and Plant Growth Promoting Bacteria in V-Ti Magnetite Mine Tailing Soil from Panzhihua, China

Chu

et al. 2014

PLoS ONE

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To provide a basis for using indigenous bacteria for bioremediation of heavy metal contaminated soil, the heavy metal resistance and plant growth-promoting activity of 136 isolates from V-Ti magnetite mine tailing soil were systematically analyzed. Among the 13 identified bacterial genera, the most abundant genus was Bacillus (79 isolates) out of which 32 represented B. subtilis and 14 B. pumilus, followed by Rhizobium sp. (29 isolates) and Ochrobactrum intermedium (13 isolates). Altogether 93 isolates tolerated the highest concentration (1000 mg kg−1) of at least one of the six tested heavy metals. Five strains were tolerant against all the tested heavy metals, 71 strains tolerated 1,000 mg kg−1 cadmium whereas only one strain tolerated 1,000 mg kg−1 cobalt. Altogether 67% of the bacteria produced indoleacetic acid (IAA), a plant growth-promoting phytohormone. The concentration of IAA produced by 53 isolates was higher than 20 µg ml−1. In total 21% of the bacteria produced siderophore (5.50–167.67 µg ml−1) with two Bacillus sp. producing more than 100 µg ml−1. Eighteen isolates produced both IAA and siderophore. The results suggested that the indigenous bacteria in the soil have beneficial characteristics for remediating the contaminated mine tailing soil.

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Section: Introductionmentioning

confidence: 99%

Culturable Heavy Metal-Resistant and Plant Growth Promoting Bacteria in V-Ti Magnetite Mine Tailing Soil from Panzhihua, China

Chu

et al. 2014

PLoS ONE

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“…Benoit and Rozan (1997) reported that sulfide-silver complexes may play a key role in controlling the chemical forms of silver in oxygenated waters. In anoxic environments such as sediments and porewater, sulfides and thiols are reported to be the main responsible ligands (Di Toro et al, 1990;Allen et al, 1993;Carr and Nipper, 2000;Teng Yanguo et al, 2003;Smith et al, 2002Smith et al, , 2004. In addition to the two main binding ligands, it is reported that particulates and organic matter may strongly adsorb and bind with silver (Allen et al, 1993;Brassard et al, 1996;Pirestani et al, 1997;Brassard et al, 1997a, b).…”

Section: Introductionmentioning

confidence: 89%

Using frontal affinity chromatography to study how silver binds with particulates

Yurong

2010

Chin. J. Geochem.

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Frontal affinity chromatography was applied to characterizing the mechanism of binding of silver with sediment particulates collected from Lake Ontario, Canada. The results showed that there was one major binding site for Ag + in the particulates. The binding capacity ranges from 6.06 to 1.01 μ·mol·g -1 , and the binding constant (lgK) from 6.23 to 7.43 M -1 in 0.005 M ion strength at pH=3-7. The binding capacity and affinity constant were found to be pH-dependent. It is suggested that the particulate surface site where silver was bound was the anionic base. This study would be helpful for better understanding of the fundamental environmental chemistry of silver in sediments.

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“…Vanadium is significantly accumulated in the soil of the Panzhihua area. Human activities such as industrial activities have intensified the pollution and release of vanadium and caused serious damages to the ecological system (Teng Yanguo et al, 2002Yanguo et al, , 2003Yanguo et al, , 2006.…”

Section: Study Areamentioning

confidence: 99%

Environmentally geochemical characteristics of vanadium in the topsoil in the Panzhihua mining area, Sichuan Province, China

et al. 2009

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Vanadium is a trace element, which may be biologically beneficial and possibly essential but certainly harmful to human beings and some living organisms if excessive. After over 40 years of development, the mining industry has caused serious environmental problems in the Panzhihua mining area. Vanadium is significantly accumulated in the soil of the Panzhihua area. Human activities have intensified the pollution and release of vanadium and caused serious damages to the ecological system there. In the past few years, the authors have made investigations into and assessments on the geochemical distribution, chemical speciation, adsorption characteristics and transfer behavior of vanadium in the topsoil in the Panzhihua mining area. The results showed that: (1) the difference in the contents of vanadium in soil between premonsoon and monsoon is insignificant; (2) the adsorption isotherms of vanadium on soil in the Panzhihua mining area are well described by the Langmuir type; (3) the transfer ability of vanadium in soil is interrelated to soil properties; and (4) the chemical speciation of vanadium shows an order of insoluble residue > oxidizable=reducible > soluble component. According to the above results, some countermeasures to control pollution of vanadium in soil should be put forward.

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Environmental geochemistry of heavy metal contaminants in soil and stream sediment in Panzhihua mining and smelting area, Southwestern China

Cited by 34 publications

References 19 publications

Culturable Heavy Metal-Resistant and Plant Growth Promoting Bacteria in V-Ti Magnetite Mine Tailing Soil from Panzhihua, China

Culturable Heavy Metal-Resistant and Plant Growth Promoting Bacteria in V-Ti Magnetite Mine Tailing Soil from Panzhihua, China

Using frontal affinity chromatography to study how silver binds with particulates

Environmentally geochemical characteristics of vanadium in the topsoil in the Panzhihua mining area, Sichuan Province, China

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