Instances of Soil and Crop Heavy Metal Contamination in China

Wang, Dong; Cui, Yanshan; Liu, X.

doi:10.1080/20015891109392

Cited by 179 publications

(27 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, the plants accumulate higher levels of Cd from the soil, though Cd concentration in soil is very low in comparison to the other four heavy metals, its relative accumulation is greater in plants. The high values for Cd transfer factor may be explained by the fact that Cd is easily absorbed by plants (Sheng et al 2001;Wang et al 2001). Cd is one of most moveable metals; it can be moved within organisms by active ion pumps that normally transport Ca 2+ (Berg et al 1995).…”

Section: Heavy Metal Transfer From Soil To Plantmentioning

confidence: 97%

Effect of wastewater irrigation on vegetables in relation to bioaccumulation of heavy metals and biochemical changes

Gupta

Satpati

Nayek

et al. 2009

Environ Monit Assess

138

View full text Add to dashboard Cite

The present study was conducted to determine the heavy metal contamination in soil with accumulation in edible parts of plants and their subsequent changes in biochemical constituents due to wastewater irrigation. Though the wastewater contains low levels of the heavy metals (Fe, Mn, Pb, Cd, and Cr), the soil and plant samples show higher values due to accumulation. The trend of metal accumulation in wastewater-irrigated soil is in the order: Fe > Pb > Mn > Cr > Cd. Of the three species Colocasia esculentum, Brassica nigra, and Raphanus sativus that are grown, the order of total heavy metal accumulation in roots is Raphanus sativus > Colocasia esculentum, while in shoots the order is Brassica nigra > Colocasia esculentum > Raphanus sativus. The enrichment factor (EF) of the heavy metals in contaminated soil is in the sequence of Cd (3) > Mn (2.7) > Cr (1.62) > Pb (1.46) > Fe (1.44), while in plants EF varies depending upon the species and plant part. C. esculentum and R. sativus show a higher EF for Cr and Cd. All plants show a high transfer factor (TF > 1) for Cd signifying a high mobility of Cd from soil to plant whereas the TF values for Pb are very low as it is not bioavailable. Results of the biochemical parameters show decrease in total chlorophyll and total amino acid levels in plants and an increase in amounts of soluble sugars, total protein, ascorbic acid, and phenol except B. nigra for protein in plants grown in soil irrigated with wastewater as compared to control site.

show abstract

Section: Heavy Metal Transfer From Soil To Plantmentioning

confidence: 97%

Effect of wastewater irrigation on vegetables in relation to bioaccumulation of heavy metals and biochemical changes

Gupta

Satpati

Nayek

et al. 2009

Environ Monit Assess

138

View full text Add to dashboard Cite

show abstract

“…Contaminated vegetables by heavy metals have been documented in many provinces of China (Dong et al 2001). Sewage irrigation is one of the main causes for vegetable contamination by heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Health risk assessment of heavy metals for edible parts of vegetables grown in sewage-irrigated soils in suburbs of Baoding City, China

Xue

Liu

et al. 2011

Environ Monit Assess

View full text Add to dashboard Cite

With the long-term application of wastewater to vegetable production fields, there is concern about potential health risks of heavy metals contaminating the edible parts of vegetables grown in contaminated soils in the suburban areas of Baoding City, China. The average concentration of elemental Zn in sewage-irrigated soil was the highest (153.77 mg kg(-1)), followed by Pb (38.35 mg kg(-1)), Cu (35.06 mg kg(-1)), Ni (29.81 mg kg(-1)), and Cd (0.22 mg kg(-1)) which were significantly higher (P < 0.05) than those in the reference soil. The results showed that long-term sewage irrigation had led to a growing accumulation of heavy metals in the soils, especially for Cd, Zn, and Pb. Furthermore, the concentrations of elemental Cd, Zn, and Ni in vegetables (e.g., Beassica pekinensis L., Allium fistulosum L., Spinacia oleracea L.) collected from the wastewater-irrigated soils exceeded the maximum permissible limits, and this also increased the daily intake of metals by food. However, compared with the health risk index of <1 for heavy metals, the ingestion of vegetables from the soils irrigated with sewage effluent posed a low health risk. Nevertheless, heavy metal concentrations should be periodically monitored in vegetables grown in these soils together with the implementation effective remediation technologies to minimize possible impacts on human health.

show abstract

“…The concentrations of Cd, Cu, Pb, and Zn were found in the range of 0.01-0.12 mg kg -1 , 0.10-2.90 mg kg -1 , 0.02-0.23 mg kg -1 , and 0.51-3.35 mg kg -1 , respectively in soil of Lagos, Nigeria (Awofolu 2005). Soil Cd range was recorded from 0.46 to 1.04 mg kg -1 in some parts of China (Dong et al 2001). Arsenic and trace metal rich ground waters have been using for irrigation in Bangladesh for several decades.…”

mentioning

confidence: 99%

Distribution of Arsenic and Trace Metals in the Floodplain Agricultural Soil of Bangladesh

Ahsan

DelValls

Blasco

2008

Bull Environ Contam Toxicol

View full text Add to dashboard Cite

Arsenic contaminated groundwater of Bangladesh is one of the largest natural calamities of the world. Soil samples were collected from floodplain agricultural land of Faridpur and Dhamrai regions to estimate the concentration of arsenic and other trace metals (copper, nickel, zinc, chromium, cadmium, lead, selenium, cobalt, mercury, and manganese). Average arsenic in Faridpur soil was recorded more than three times higher than the world limit and nearly five times higher than that of Dhamrai. The average copper, chromium and cobalt both in Faridpur and Dhamrai agricultural soil were also higher than the Dutch and the world standards. Both Fardipur and Dhamrai soil contain low amount of selenium in comparison to world limit (0.7 mg kg(-1)). A poor correlation between manganese and arsenic was noticed in Faridpur. This may be played a subordinate role in the fixation of arsenic in soil. This study also reveals that the area which has arsenic and trace metal contaminated groundwater may also contain high level of arsenic and trace metals in the agricultural soil due to irrigation with contaminated groundwater.

show abstract

Instances of Soil and Crop Heavy Metal Contamination in China

Cited by 179 publications

References 9 publications

Effect of wastewater irrigation on vegetables in relation to bioaccumulation of heavy metals and biochemical changes

Effect of wastewater irrigation on vegetables in relation to bioaccumulation of heavy metals and biochemical changes

Health risk assessment of heavy metals for edible parts of vegetables grown in sewage-irrigated soils in suburbs of Baoding City, China

Distribution of Arsenic and Trace Metals in the Floodplain Agricultural Soil of Bangladesh

Contact Info

Product

Resources

About