Heavy Metals and Nutrients Uptake by Medicinal Plants Cultivated on Multi-metal Contaminated Soil Samples from an Abandoned Gold Ore Processing Site

This paper considered the toxicity assessment of some crude oil contaminated soils in Niger Delta areas. The soil samples were collected from different horizontal distances, vertical depths and contaminated soil of different ages. The heavy metals in the contaminated soils were digested and extracted using di-acid digested and DTPA extraction methods respectively. The physiochemical parameters (moisture content, pH, N, P and heavy metals (Ni, Pb and Cd) were analysed with APHA method. The heavy metals concentration was determined using atomic absorption spectrophotometer (AAS). The results show that the metals concentration decreased with the age of the contaminated soil and with increased vertical depths. However, the metals concentrations were almost constant at different horizontal distances. Similar trend was observed for the moisture content, pH, N, P and K.

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Accumulation of Arsenic and Heavy Metals in Native and Cultivated Plant Species in a Lead Recycling Area in Vietnam

Minerals ◽

10.3390/min9020132 ◽

2019 ◽

Vol 9 (2) ◽

pp. 132 ◽

Cited By ~ 4

Author(s):

Ha Chu ◽

Tu Vu ◽

Tam Nguyen ◽

Ha Nguyen

Keyword(s):

Heavy Metals ◽

Plant Species ◽

Contaminated Soil ◽

Aboveground Biomass ◽

Native Plants ◽

Dry Weight ◽

Soil Samples ◽

Rice Grains ◽

Cultivated Plant ◽

Lead Recycling

This study was conducted to determine the soil contamination and the accumulation of arsenic (As) and heavy metals including chromium (Cr), copper (Cu), zinc (Zn), cadmium (Cd), and lead (Pb) in 15 native and cultivated plant species in a Pb recycling area of Dong Mai village, Hung Yen Province, Vietnam. The analysis of 32 soil samples collected from seven different sites in the study area revealed that the contents of Al, Fe, As, Cr, Cu, Zn, Cd, and Pb in the soils ranged from 6200–32,600, 11,300–55,500, 5.4–26.8, 24.9–290, 66.0–252, 143–455, 0.71–1.67, and 370–47,400 mg/kg, respectively. The contents of As, Cr, Cu, Zn, Cd, and Pb in rice grains and the shoots of 15 plant species ranged from 0.14–10.2, 1.00–10.2, 5.19–23.8, 34.7–165, 0.06–0.99, and 2.83–1160 mg/kg-dry weight (DW), respectively. Hymenachne acutigluma (Steud.) Gilliland, a potential hyperaccumulator of Pb (1160 mg/kg–DW), is considered the best candidate for phytoremediation of Pb-contaminated soil. The cultivation of rice and vegetables, and the use of some native plants for food for humans, pigs, and cattle should be managed with consideration of the accumulation of Pb in their aboveground biomass.

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Isolation and identification of microbes that tolerate heavy metals

Proceedings International ◽

10.33263/proceedings21.018018 ◽

2020 ◽

Vol 2 (1) ◽

pp. 18

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Minimal Inhibitory Concentration ◽

Contaminated Soil ◽

Metal Pollution ◽

Heavy Metal Pollution ◽

Inhibitory Concentration ◽

Soil Samples ◽

Isolation And Identification ◽

Bacteria And Fungi

The greatest pollution earth is facing today is heavy metal pollution. So, there is a necessity to find a remedy to clear up this problem. A study was undergone by isolating the bacteria and fungi from the contaminated soil samples by determining its characteristics to resist heavy metals. Several methods have been determined to control the occurrence of the substances in the environment. Studies have shown that the isolated microbes have shown minimal inhibitory concentration. This can be used as a bioremediation method to drive away from heavy metal pollution as much as possible.

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Effects of metal contaminated soils on Eisenia fetida (Savigny) at Ludhiana (Punjab), India

Journal of Applied and Natural Science ◽

10.31018/jans.v6i2.492 ◽

2014 ◽

Vol 6 (2) ◽

pp. 519-523

Author(s):

Kulwinder Kaur ◽

Gurinder Kaur Sangha

Keyword(s):

Heavy Metals ◽

Contaminated Soil ◽

Contaminated Soils ◽

Eisenia Fetida ◽

Threshold Concentration ◽

Soil Samples ◽

Coelomic Fluid ◽

Cocoon Production ◽

Metal Levels ◽

Cadmium Lead

The soil in the vicinity of stream of Buddah Nullah in Ludhiana, Punjab has been found to be contaminated with heavy metals. The objective of this paper was to conduct studies with earthworm Eisenia fetida (Savigny) exposed to five soil samples collected from different sites around the stream of Buddah Nullah, since no such work has been done using earthworm as bio- indicator of soil pollution in that area to check the hazardous effects of heavy metals on soil organisms. Metal levels were recorded higher in contaminated soil samples than threshold concentration in soil of campus field. Adult E. fetida were exposed for a period of 80 days to evaluate the effects of elevated levels of heavy metals i.e.0.29 ppm, 4.18 ppm and 2.29 ppm for cadmium, lead and nickel respectively on survival, growth, morphology and reproduction. Significant effects were observed on survival, growth and reproduction of the tested organisms along with various morphological abnormalities such as tail shedding, body fragmentation and extrusion of coelomic fluid. But no such deformity was observed in worms reared in reference soil of university campus field. Detrimental effects on rates of cocoon production and hatchling emergence were observed and a significant delay was also recorded in production of cocoons and emergence of hatchlings. Results of the study indicated that reproductive end points were more sensitive to elevated metal levels in contaminated soil than survival or weight change.

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Community-level physiological profiles of microorganisms inhabiting soil contaminated with heavy metals

International Agrophysics ◽

10.1515/intag-2016-0096 ◽

2018 ◽

Vol 32 (1) ◽

pp. 101-109 ◽

Cited By ~ 7

Author(s):

Agnieszka Kuźniar ◽

Artur Banach ◽

Zofia Stępniewska ◽

Magdalena Frąc ◽

Karolina Oszust ◽

...

Keyword(s):

Heavy Metals ◽

Dehydrogenase Activity ◽

Contaminated Soil ◽

Heavy Metal Contamination ◽

Ferrous Metal ◽

Soil Surface ◽

Soil Samples ◽

Community Level ◽

Flame Atomic Absorption ◽

Physiological Profiles

AbstractThe aim of the study was to assess the differences in the bacterial community physiological profiles in soils contaminated with heavy metalsversussoils without metal contaminations. The study’s contaminated soil originated from the surrounding area of the Szopienice non-ferrous metal smelter (Silesia Region, Poland). The control was soil unexposed to heavy metals. Metal concentration was appraised by flame atomic absorption spectrometry, whereas the the community-level physiological profile was determined with the Biolog EcoPlatesTMsystem. The soil microbiological activity in both sites was also assessedviadehydrogenase activity. The mean concentrations of metals (Cd and Zn) in contaminated soil samples were in a range from 147.27 to 12265.42 mg kg−1, and the heavy metal contamination brought about a situation where dehydrogenase activity inhibition was observed mostly in the soil surface layers. Our results demonstrated that there is diversity in the physiological profiles of microorganisms inhabiting contaminated and colntrol soils; therefore, for assessment purposes, these were treated as two clusters. Cluster I included colntrol soil samples in which microbial communities utilised most of the available substrates. Cluster II incorporated contaminated soil samples in which a smaller number of the tested substrates was utilised by the contained microorganisms. The physiological profiles of micro-organisms inhabiting the contaminated and the colntrol soils are distinctly different.

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