Effects of two sludge application on fractionation and phytotoxicity of zinc and copper in soil

He, Minfei; Tian, Guangming; Liang, Xingqiang; Yu, Yabin; Wu, Jianyang; Zhou, Gendi

doi:10.1016/s1001-0742(07)60241-1

Cited by 20 publications

(7 citation statements)

References 45 publications

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“…The significant correlation herein observed between Zn concentration in aereal tissue and organic Zn suggest that Zn existed in labile organic fractions in sludge amended soils, which were easily released by soil microorganisms and adsorbed by plants. This finding is in agreement with that obtained by He et al [69] in maize plants. On the other hand, Hseu [70] found positive correlations between EXCH-Zn and INOR-Zn and plant uptake.…”

Section: Discussionsupporting

confidence: 94%

Plant absorption of trace elements in sludge amended soils and correlation with soil chemical speciation

Torri¹,

Lavado²

2009

Journal of Hazardous Materials

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Section: Discussionsupporting

confidence: 94%

Plant absorption of trace elements in sludge amended soils and correlation with soil chemical speciation

Torri¹,

Lavado²

2009

Journal of Hazardous Materials

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“…Wastewaters carry toxic heavy metals that get introduced into the soil and aquatic system through various processes, prominent among them being irrigation (Khan et al 2008). Long-term irrigation through wastewater results in build-up of heavy metals in soil that can restrict soil functioning resulting in toxicity to plants and contamination of the food chain affecting food quality and safety (He et al 2005;Muchuweti et al 2006;Chen et al 2009;Singh et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Effect of long-term application of treated sewage water on heavy metal accumulation in vegetables grown in Northern India

Ghosh

Bhatt

Agrawal

2011

Environ Monit Assess

143

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Use of industrial and wastewater for irrigation is on the rise in India and other developing countries because of scarcity of good-quality irrigation water. Wastewaters contain plant nutrients that favour crop growth but leave a burden of heavy metals which can enter the food chain and is a cause of great concern. The present study was undertaken on the long-term impact of irrigation with treated sewage water for growing vegetables and the potential health risk associated with consumption of such vegetable. Treated sewage water (TSW), groundwater (GW), soil and plant samples were collected from peri urban vegetable growing areas of Northern India (Varanasi) and analysed to assess the long-term effect of irrigation with TSW on Cd, Cr, Ni and Pb build-up in soils and its subsequent transfer into commonly grown vegetable crops. Results indicate that TSW was richer in essential plant nutrients but contained Cd, Cr and Ni in amounts well above the permissible limits for its use as irrigation water. Long-term application of TSW resulted in significant build-up of total and DTPA extractable Cd, Cr, Ni and Pb over GW irrigated sites. TSW also resulted in slight lowering in pH, increase in organic carbon (1.6 g kg(-1)) and cation exchange capacity (5.2 cmol kg(-1)). The tissue metal concentration and relative efficiency of transfer of heavy metals from soil to plant (transfer factor) for various groups of vegetables were worked out. Radish, turnip and spinach were grouped as hyper accumulator of heavy metals whereas brinjal and cauliflower accumulated less heavy metals. Health risk assessment by consumption of vegetables grown with TSW indicated that all the vegetables were safe for human consumption. However, significant accumulation of these heavy metals in soil and plant needs to be monitored.

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“…[3,4] Total metal content in soil has been estimated to be an inadequate parameter for identifying the level of availability and toxicity. [5][6][7][8] High concentrations of metals in soil do not necessarily imply their release and, consequently their availability to plants or groundwater metal contamination. [9] Trace metals present in the soil system are generally distributed either within its solution phase or within its solid phase.…”

Section: Introductionmentioning

confidence: 99%

Chemical fractionation of Cu, Zn, Cd, Cr, and Pb in sewage sludge amended soils at the end of 65-d sorghum-sudan grass growth

Paramasivam

Lettimore

Alva³

et al. 2014

Journal of Environmental Science and Health, Part A

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Heavy metals are potentially toxic to human life and the environment. Metal toxicity depends on chemical associations in soil. Understanding the chemical association of trace elements in soils amended with biosolids is very important since it determines their availability within rhizosphere and mobility beyond the rhizosphere. A sequential extraction method was used to determine the various chemical associations [labile (exchangeable + sorbed), organic, carbonates, and sulfides] of Cu, Zn, Cd, Cr, and Pb at the end of sorghum-sudan grass growth (65d) in Candler fine sand (pH = 6.8) and in Ogeechee loamy sand (pH = 5.2) amended with wastewater treatment sludge (WWTS) obtained from two different sources at application rates of 0, 24.7, 49.4, 98.8, and 148.2 Mg ha(-1). Results of this study indicated that irrespective of the soil type, Cu, Cd, Cr, and Pb in the labile fractions (exchangeable + sorbed) were in the range of 0-3.0 mg kg(-1) and the amount for Zn was in the range of 0.2-6.6 mg kg(-1). Therefore, their availability to plants and mobility beyond rhizosphere would be substantially low unless further transformations occur from other fractions. Results also indicated that the presence of substantial amounts of trace elements studied were in sulfide (HNO3) fraction and in organic (NaOH) fraction irrespective of soil type with the exception of Pb which was mainly present as carbonate (Na2EDTA) fraction and the remaining Pb equally as sulfide (HNO3) and organic (NaOH) fractions. Furthermore, results indicated that Cd was mainly present as carbonate (Na2EDTA) fraction. Irrespective of soil type, source and rate of WWTS application, summation of quantities of various fractions of all the trace elements studied through sequential extraction procedure were 1 to 25 % lower than that of total recoverable quantities of these trace elements determined on acid digestion described by US EPA method 3050 B. It was further evident that growing sorghum sudan grass for 65-d following the application of WWTS either depleted labile fractions or shifted the solid phases containing the trace elements in soils away from those extractable with more severe reagents, such as 4M HNO3 to those extractable with milder reagents such as dilute NaOH and Na2EDTA.

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Effects of two sludge application on fractionation and phytotoxicity of zinc and copper in soil

Cited by 20 publications

References 45 publications

Plant absorption of trace elements in sludge amended soils and correlation with soil chemical speciation

Plant absorption of trace elements in sludge amended soils and correlation with soil chemical speciation

Effect of long-term application of treated sewage water on heavy metal accumulation in vegetables grown in Northern India

Chemical fractionation of Cu, Zn, Cd, Cr, and Pb in sewage sludge amended soils at the end of 65-d sorghum-sudan grass growth

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