Heavy Metals in the Soil-Water-Plant System

Huai-man, Chen; Zheng, Chaogu

doi:10.1007/978-1-4613-0405-0_34

Cited by 19 publications

(18 citation statements)

References 2 publications

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“…Soil pollution occurs when the concentration of these heavy metals becomes significantly higher than that of the background, gradually deteriorating the ecology and environment [1]. Among heavy metals, Cd pollution is the most serious.…”

Section: Introductionmentioning

confidence: 99%

Effects of heavy metal Cd pollution on microbial activities in soil

Shi¹,

Ma²

2017

Ann Agric Environ Med.

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Weilin Shi, Xiying Ma. Effects of heavy metal Cd pollution on microbial activities in soil. Ann Agric Environ Med. 2017; 24(4): 722-725. doi: 10.26444/aaem/80920 AbstractHeavy metal contamination of soil occurs when heavy metals are introduced to soil through human activities, leading to the gradual deterioration of the ecology and environment. Microorganism activity reflects the intensity of various biochemical reactions in soil, and changes in it reflect the level of heavy metal pollution affecting the soil. The effects were studied of heavy metal Cd on the microbial activity of soil at different concentrations by investigating the respiratory intensity, urease activity, and catalase activity in forest soil and garden soil. The results showed that the respiratory intensity, urease and catalase activities in the garden soil were all higher than in the forest soil. Cd has obvious inhibitory effects on microbial activities. The three parameters exhibited a downward trend with increasing concentrations of Cd. Catalase activity increased when the mass concentration of Cd reached 1.0 mg/kg, indicating that low concentrations of Cd can promote the activity of some microorganisms. Respiratory intensity and urease activity also increased when the concentration reached 10.0 mg/ kg, showing that respiratory intensity and urease activity have strong response mechanisms to adverse conditions. The effective state of Cd in soil, as well as inhibition of microbial activity, decreased with incubation time.

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Section: Introductionmentioning

confidence: 99%

Effects of heavy metal Cd pollution on microbial activities in soil

Shi¹,

Ma²

2017

Ann Agric Environ Med.

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“…In China, much soil has been polluted with Cd which is one of the most important and typical heavy metal pollutant (Chen, 1996;Su et al, 2009;Liu et al, 2010). According to the literature, about 14000 hm 2 of agricultural soils have been polluted with Cd in China (Chen, 1996;Su et al, 2009). Moreover, Cd may pose risk to human and animal health through consumption of crops although the plant tissue concentrations may not be generally phytotoxic (Liu et al, 2007b).…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation and translocation of cadmium in wheat (Triticum aestivum L.) and maize (Zea mays L.) from the polluted oasis soil of Northwestern China

Yang

Zhang

Zhao

2014

Chemical Speciation & Bioavailability

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A pot experiment was conducted to study the bioaccumulation and translocation of cadmium (Cd) in wheat (Triticum aestivum L.) and maize (Zea mays L.) grown in the Cd-polluted oasis soil in northwest China. The results showed that Cd in the unpolluted oasis soil was mainly bound to carbonate fraction (F2) and Fe-Mn oxide fraction (F3). However, a marked change of the Cd fractionation was observed with increasing soil Cd concentrations, where the concentrations of Cd in F1 (exchangeable fraction), F2 and F3 increased significantly (P<0.001 for F1, F2 and F3). The correlation analysis between the fraction distribution coefficient (FDC) of Cd in the soil and Cd concentration accumulated in the two crops showed that Cd in F1 fraction in the oasis soil made the greatest contribution on the accumulation of Cd in the two crops. Higher bioconcentration factors (BCF) of Cd were observed in the two crops' shoots compared with grains, and low translocation factors (TF) of Cd in the grains were observed for both crops. Cd had a higher accumulation in the edible parts of the wheat, but lower accumulation in those of the maize. Therefore, wheat grown in Cd-polluted oasis soil has a higher risk to human health, whereas maize has a lower risk suggesting that wheat is not suitable for cultivation as crop and consumption by humans in the Cd-polluted oasis soil, but that maize is suitable for plantation.

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“…The 192 copies of simonii green vegetables' roots, stems, leaves from three loose sides of the road and samples of 384 (2 × 192) copies from the area around the root rhizosphere soil [12] were collected in the western region of Inner Mongolia National Highway G210, G110 and G109 within 20 m on both sides of the plant and soil samples by plum-shaped distribution (Figure 1). And the simultaneous acquisition of the plants as control (CK) is from relatively clean area around the off-road and industrial pollution.…”

Section: Sample Collection and Processingmentioning

confidence: 99%

“…Currently, research on the domestic and international distribution of heavy metals in soil on both sides of the road have been reported [5][6][7][8][9][10] . At the same time, studies on heavy metal pollution on soil-plant systems on both sides of the road have been carried out [11][12][13][14][15][16][17] , but only limited studies are conducted on the heavy metal absorption and accumulation on the highway [18] . With the rapid development of the regional economy, the western region of Inner Mongolia produces more coal, building materials, and chemical products, and the rapid increase in traffic and road transport vehicles increased significantly [19] .…”

Section: Introductionmentioning

confidence: 99%