Accumulation and translocation of toxic elements from contaminated soils to plants, Nigeria: Implications for metal potential hazards to humans.

2021 ◽  
Author(s):  
Eneojo G Ameh ◽  
Samuel Kolawole ◽  
Sunday Idakwo ◽  
Theophilus Ojonimi
Keyword(s):  
Contaminated Soils ◽  
Metal Uptake ◽  
Health Effect ◽  
Translocation Factor ◽  
Hierarchical Cluster ◽  
Acid Mixture ◽  
Sida Acuta ◽  
Plant Parts ◽  
Bioaccumulation Coefficient ◽  
Permissible Levels

Abstract Soil pollution by heavy metals, their health effect on humans via the food chain are pressing issues of the environment caused by human activities. Plant’s accumulation and translocation potentials were investigated to determine their suitability for phytoremedial purposes, and the potential of the edibles/vegetables to cause harm to humans when consumed. Plant and soil samples were collected, prepared, digested in acid mixture of H2O2 and HNO3 for plants and Li2B4O7 − LiBO2 for soils and were analysed. These analyses were carried out to determine the concentration of these metals in soil, their accumulation and translocation in plant parts. The data acquired were evaluated using bioconcentration (BCF), translocation factor (TF), bioaccumulation coefficient (BAC), metal uptake efficiency (ME%) and hierarchical cluster analysis to determine hyperaccumulators, phytoextractors, phytostabilizers, metal source plants and metals that could be toxic to humans through intake of roots, grains/seeds, fruits and leaves as vegetables. ANOVA analysis revealed that the data were significant at p < 0.05. Correlation and cluster analyses were employed to understand the relationships between variables determined. From this study, Colocasia asculenta (CA), Corchorus aestuans (COA) and Laportea aestuans (LA) were hyperaccumulators of Co at various points. Arsenic has phytostabilizer plants from the study. COA and LA were phytostabilizers of Cd while Sida acuta was the only phytoextractor. The concentration of metals in the vegetables/edibles in roots, shoots and leaves were above permissible levels for Cr, Co and Cd. The metal uptake efficacy (%) were in this order Co (28.99 to 89.08) > Cd (21.74 to 50.96) > Cr (22.90 to 49.06) > and As (9.65 to 39.19).

scholarly journals Accumulation and Translocation of Toxic Elements From Contaminated Soils, Nigeria: Implications for Phytomining and Hazards to Humans

2021 ◽  
Author(s):  
Eneojo G Ameh ◽  
Samuel M Kolawole ◽  
Sunday O Idakwo ◽  
Ile O Ojonimi
Keyword(s):  
Contaminated Soils ◽  
Metal Uptake ◽  
Health Effect ◽  
Translocation Factor ◽  
Hierarchical Cluster ◽  
Acid Mixture ◽  
Sida Acuta ◽  
Plant Parts ◽  
Bioaccumulation Coefficient ◽  
Permissible Levels

Abstract Soil pollution by heavy metals and their health effect on human are pressing issues of the environment caused by human activities. Plant’s accumulation and translocation potentials were investigated to determine their suitability for phytoremedial purposes, their ability to serve as reservoir for recovery of additional economic amount of metals and the potential of the edibles/vegetables to cause harm to humans when consumed. The plant and soil samples were collected, prepared, digested in acid mixture of H2O2 and HNO3 for plants and Li2B4O7 - LiBO2 for soils and were analysed. The analyses were carried out to determine the concentration of these metals in soil, their accumulation and translocation in plant parts. The data acquired were evaluated using bioconcentration (BCF), translocation factor (TF), bioaccumulation coefficient (BAC), metal uptake efficiency (ME%) and hierarchical cluster analysis to determine hyperaccumulators, phytoextractors, phytostabilizers, metal source plants and metals that could be toxic to humans through intake of roots, grains/seeds, fruits and leaves as vegetables. ANOVA analysis revealed that the data were significant at p <0.05. Correlation and cluster analyses were employed to understand the relationships between variables determined. From this study, CA, COA and LA were hyperaccumulators of Co at various points. Arsenic has only phytostabilizers. COA and LA were phytostabilizers of Cd while Sida acuta was the only phytoextractor. Chromium, Co and Cd have prospect of being phytomined from some of the plants. Vegetables/edibles values in shoots and leaves were above permissible levels for Cr, Co and Cd. The metal uptake efficacy (%) were in this order Co (28.99 to 89.08) > Cd (21.74 to 50.96) >Cr (22.90 to 49.06) > and As (9.65 to 39.19).

scholarly journals Phytoremediation Potentials of Cynodon dactylon on Heavy Metal Contaminated Soils from Challawa Industrial Estate, Kano-Nigeria

2021 ◽  
pp. 25-36
Author(s):  
L. Shuaibu ◽  
U. Abdullahi ◽  
A. I. Yaradua ◽  
J. I. Bungudu
Keyword(s):  
Heavy Metal ◽  
Contaminated Soils ◽  
Cynodon Dactylon ◽  
Translocation Factor ◽  
Contamination Factor ◽  
Atomic Absorption Spectrophotometry ◽  
Plant Sample ◽  
Plant Parts ◽  
Industrial Estate ◽  
And Control

This study investigated the phytoremediation potentials of Cynodon dactylon in heavy metal contaminated soils of Challawa Industrial Estate, Kano, Kano State, Nigeria. A total of 100 samples comprising of 50 soils and 50 plant parts of C. dactylon were evaluated for the presence of heavy metals by the use of atomic absorption spectrophotometry (AAS) method. Extent of heavy metal soil contamination and phytoremediation potentials of the study plant were assessed by the use of metal contamination factor (Cf) for soil; Bioaccumulation and translocation factors for the plant sample respectively. From the results, levels (mg/kg) of the metals in the C. dactylon from contaminated and control sites were found to be in the sequence of Fe (442.60) > Cu (138.35) > Zn (133.53) > Cd (61.50) > Pb (42.47) > Mn (28.40) > Ni (18.40) > Cr (17.73) and Fe (88.60) > Zn (38.18) > Cu (33.60) > Ni (13.70) > Mn (12.67) > Pb (6.07) > Cd (5.60) > Cr (5.03) respectively. The contamination factor values Cf, (mg/kg) of all the metals in the soils were found to be in the sequence of Cd (10.73) > Cu (5.64) > Cr (3.07) > Pb (2.98) > Ni (2.17) > Zn (2.09) > Mn (2.00) > Fe (1.72). The results showed that the soils are highly contaminated with Cd, considerably contaminated with Cu and Cr, and moderately contaminated with Fe, Mn, Zn, Ni and Pb. The bioaccumulation and translocation factor values (BAF>1 and TF<1) for Cd, Cr, Cu, Mn, Ni, Pb and Zn suggest accumulation in roots and qualify the plant as good candidate for phytostabilization. Moreover, the bioaccumulation and translocation factor values (BAF and TF>1) for the plant species were greater than 1 for Fe suggesting efficient accumulation in the shoot. However, C. dactylon could be recommended as good candidate for phytoextraction of Fe and phytostabilization of the study investigated metals (Cd, Cr, Cu, Mn, Ni, Pb and Zn) in multi-metal contaminated soils.

Copper Accumulation and Tolerance of Chlorophytum comosum

2011 ◽  
Vol 233-235 ◽  
pp. 707-711
Author(s):  
You Bao Wang ◽  
Nan Nan Wang ◽  
Shan Hu
Keyword(s):  
Contaminated Soils ◽  
Translocation Factor ◽  
Copper Accumulation ◽  
Tolerance Index ◽  
High Tolerance ◽  
High Accumulation ◽  
Bioaccumulation Coefficient ◽  
Mda Content ◽  
Chlorophytum Comosum ◽  
Cu Tolerance

In this study, Copper (Cu) tolerance inChlorophytum comosumwas tested by pot-planting. The results showed that the tolerance index (TI) ofC. comosumwas above 100 in soil Cu concentration of 50mg·kg-1. With the increase of Cu concentration in soil, the MDA content increased, but had no significant differences with the control until 500mg·kg-1. The value of chlorophyll a/b had no significant differences with the control in all treatments. Meanwhile, the bioaccumulation coefficient (BC) and translocation factor (TF) value ofC. comosumwere 1.287 and 0.687 respectively in Cu concentration of soil up to 500mg·kg-1. For the advantages of high tolerance, high accumulation and high ornamental value,C. comosummay be a potential Cu-accumulator and have tremendous application value in the treatment of Cu-contaminated soils.

scholarly journals Vermicompost Assisted Phytoremediation of Heavy Metal Contaminated Soil in Madaka District, Nigeria Using Melissa officinalis L (Lemon balm) and Sida acuta (Stubborn weed)

2021 ◽  
Author(s):  
sesan abiodun aransiola ◽  
Udeme Joshua Joshia Ijah ◽  
Olabisi Peter Abioye ◽  
Jeremiah David Bala
Keyword(s):  
Heavy Metals ◽  
Structural Changes ◽  
Translocation Factor ◽  
Plant Growth Promoting Bacteria ◽  
Accumulation Coefficient ◽  
Sida Acuta ◽  
Plant Parts ◽  
Plant Growth Promoting ◽  
Goat Manure ◽  
Assisted Phytoremediation

Abstract This research was designed to clean-up through an environmentally friendly techniques, a polluted environment of Madaka District of Shikira. Physicochemical properties of the soil were done using standard methods. Chicken dropping vermicompost (CDV) and goat manure vermicompost (GMV) were produced by standard method to assist the phytoremediation process with plant growth promoting bacteria (PGPB). Canonical discriminant functions of the heavy metals were done. For the first location (AK) the plant parts of M. officinalis L mopped up heavy metals, the concentration of Cd, As, Pb in plant parts varied from 0.007 to 0.33 mg/kg, As from 0.09 to 4.39 mg/ kg and Pb from 0.07 to 10.35 mg/kg respectively while the concentration of heavy metals in S. acuta parts had Cd, As, Pb varied from 0.002 to 0.43 mg/kg, As from 0.27 to 3.79 mg/ kg and Pb from 1.68 to 10.7 mg/kg respectively. The second location (AM) also had the two plants mopping up heavy metals at different concentrations. the concentration of Cd, As, Pb in M. officinalis L parts varied from 0.03 to 0.41 mg/kg, As from 0.65 to 4.65 mg/ kg and Pb from 1.93 to 11.49 mg/kg respectively while the concentration of heavy metals in S. acuta parts had Cd, As, Pb varied from 0.06 to 0.66 mg/kg, As from 0.68 to 4.64 mg/ kg and Pb from 1.53 to 11.53 mg/kg respectively. Melissa offinalis L and Sida acuta were found most suitable for phytoextraction of sites contaminated with Cd, As and Pb because both of them have their bioconcentration factor (BCF), translocation factor (TF) and biological accumulation coefficient (BAC) to be ˃1 while both were also scored as phytostabilizer because they have BCF ˃1 and TF ˂1. Soil structural changes pre and post remediation were determined through x-ray fluorescence (XRF spectroscopy) and scanning electron microscopy (SEM) analyses.

scholarly journals Role of Two Plant Growth-Promoting Bacteria in Remediating Cadmium-Contaminated Soil Combined with Miscanthus floridulus (Lab.)

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 912
Author(s):  
Shuming Liu ◽  
Hongmei Liu ◽  
Rui Chen ◽  
Yong Ma ◽  
Bo Yang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Contaminated Soils ◽  
Translocation Factor ◽  
Plant Growth Promoting Bacteria ◽  
Bacterial Strains ◽  
Pgp Traits ◽  
Cd Tolerance ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Cd Translocation

Miscanthus spp. are energy plants and excellent candidates for phytoremediation approaches of metal(loid)s-contaminated soils, especially when combined with plant growth-promoting bacteria. Forty-one bacterial strains were isolated from the rhizosphere soils and roots tissue of five dominant plants (Artemisia argyi Levl., Gladiolus gandavensis Vaniot Houtt, Boehmeria nivea L., Veronica didyma Tenore, and Miscanthus floridulus Lab.) colonizing a cadmium (Cd)-contaminated mining area (Huayuan, Hunan, China). We subsequently tested their plant growth-promoting (PGP) traits (e.g., production of indole-3-acetic acid, siderophore, and 1-aminocyclopropane-1-carboxylate deaminase) and Cd tolerance. Among bacteria, two strains, Klebsiella michiganensis TS8 and Lelliottia jeotgali MR2, presented higher Cd tolerance and showed the best results regarding in vitro growth-promoting traits. In the subsequent pot experiments using soil spiked with 10 mg Cd·kg−1, we investigated the effects of TS8 and MR2 strains on soil Cd phytoremediation when combined with M. floridulus (Lab.). After sixty days of planting M. floridulus (Lab.), we found that TS8 increased plant height by 39.9%, dry weight of leaves by 99.1%, and the total Cd in the rhizosphere soil was reduced by 49.2%. Although MR2 had no significant effects on the efficiency of phytoremediation, it significantly enhanced the Cd translocation from the root to the aboveground tissues (translocation factor > 1). The combination of K. michiganensis TS8 and M. floridulus (Lab.) may be an effective method to remediate Cd-contaminated soils, while the inoculation of L. jeotgali MR2 may be used to enhance the phytoextraction potential of M. floridulus.

scholarly journals Evaluation of Phytoremediation Potential of Castor Cultivars for Heavy Metals from Soil

2019 ◽  
Vol 37 ◽  
Author(s):  
M.J. KHAN ◽  
N. AHMED ◽  
W. HASSAN ◽  
T. SABA ◽  
S. KHAN ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soils ◽  
Metal Uptake ◽  
Plant Biomass ◽  
Ricinus Communis ◽  
Contaminated Sites ◽  
Heavy Metal Uptake ◽  
Randomized Design ◽  
Completely Randomized Design

ABSTRACT: Phytoremediation is a useful tool to restore heavy metals contaminated soils. This study was carried out to test two castor (Ricinus communis) cultivars [Local and DS-30] for phytoextraction of heavy metals from the soil spiked by known concentrations of seven metals (Cu, Cr, Fe, Mn, Ni, Pb and Zn). A pot experiment was laid out by using a completely randomized design. Soil and plant samples were analyzed at 100 days after planting. The data on heavy metal uptake by plant tissues (roots, leaves and shoots) of the two castor cultivars suggested that a considerable amount of metals (Fe = 27.18 mg L-1; Cu = 5.06 mg L-1; Cr = 2.95 mg L-1; Mn = 0.22 mg L-1; Ni = 4.66 mg L-1; Pb = 3.33 mg L-1; Zn = 15.04 mg L-1) was accumulated in the plant biomass. The soil heavy metal content at the end of experiment significantly decreased with both cultivars, resulting in improved soil quality. Therefore, it is concluded that both castor cultivars, Local and DS-30, can be used for phytoremediation of heavy metal-contaminated sites.

Accumulation and transport of antimony and arsenic in terrestrial and aquatic plants in an antimony ore concentration area (south-west China)

2020 ◽  
Vol 17 (4) ◽  
pp. 314
Author(s):  
Ling Li ◽  
Lu Liao ◽  
Yuhong Fan ◽  
Han Tu ◽  
Shui Zhang ◽  
...  
Keyword(s):  
Plant Species ◽  
Contaminated Soils ◽  
Inductively Coupled Plasma ◽  
Translocation Factor ◽  
Pueraria Lobata ◽  
West China ◽  
Inductively Coupled ◽  
South West ◽  
High Concentrations ◽  
Preferred Species

Environmental contextPhytoremediation requires an understanding of bioconcentration and translocation processes that determine behaviour and fate of potentially toxic elements. We studied the distribution of antimony and arsenic in terrestrial and aquatic soil-plant systems in an antimony ore zone. We found that the common climbing plant Kudzu (Pueraria lobata) is suitable for phyto-stabilisation of antimony-bearing tailings, while tiger grass (Thysanolaena maxima) was able to extract antimony and arsenic from contaminated soils. AbstractAntimony (Sb) pollution is a major environmental issue in China. Many historical abandoned tailings have released high concentrations of Sb and its associated element arsenic (As) to surrounding environments. This has prompted the need to understand accumulation and translocation processes that determine the behaviour and fate of Sb and As in contaminated soil–plant systems and to identify suitable plant species for phytoremediation. Here we investigate distribution of Sb and As in terrestrial and aquatic dominant plant species and associated soils, all of which are naturally found in an Sb ore concentration area in south-west China. Total Sb and As concentrations were measured by inductively coupled plasma mass spectrometry (ICP-MS). The percentage of soluble Sb and As in the total concentrations were determined; the results showed that the basic soil environment facilitates the release of Sb and As from contaminated soils, and that Sb has higher mobility than As. Bioconcentration factor (BCF) and translocation factor (TF) were used for evaluating the ability of plants to accumulate and transport Sb and As, respectively. The results indicated that all selected plant species have the potential to tolerate high concentrations of Sb and As. Consequently, this study suggested that Pueraria lobata (PL) can be used as the preferred species for phytostabilisation of abandoned Sb-bearing tailings, given that PL has well-developed roots and lush leaf tissues and the ability to translocate Sb from roots to aboveground parts. Thysanolaena maxima (TM) is suitable for phyto-extraction of Sb and As in contaminated soils.

scholarly journals Effects of Ectomycorrhizal Fungi and Heavy Metals (Pb, Zn, and Cd) on Growth and Mineral Nutrition of Pinus halepensis Seedlings in North Africa

2020 ◽  
Vol 8 (12) ◽  
pp. 2033
Author(s):  
Chadlia Hachani ◽  
Mohammed S. Lamhamedi ◽  
Claudio Cameselle ◽  
Susana Gouveia ◽  
Abdenbi Zine El Abidine ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
North Africa ◽  
Mineral Nutrition ◽  
Contaminated Soils ◽  
Mycorrhizal Fungi ◽  
Pinus Halepensis ◽  
Translocation Factor ◽  
Contaminated Sites ◽  
High Concentrations

The pollution of soils by heavy metals resulting from mining activities is one of the major environmental problems in North Africa. Mycorrhizoremediation using mycorrhizal fungi and adapted plant species is emerging as one of the most innovative methods to remediate heavy metal pollution. This study aims to assess the growth and the nutritional status of ectomycorrhizal Pinus halepensis seedlings subjected to high concentrations of Pb, Zn, and Cd for possible integration in the restoration of heavy metals contaminated sites. Ectomycorrhizal and non-ectomycorrhizal P. halepensis seedlings were grown in uncontaminated (control) and contaminated soils for 12 months. Growth, mineral nutrition, and heavy metal content were assessed. Results showed that ectomycorrhizae significantly improved shoot and roots dry masses of P. halepensis seedlings, as well as nitrogen shoot content. The absorption of Pb, Zn, and Cd was much higher in the roots than in the shoots, and significantly more pronounced in ectomycorrhizal seedlings—especially for Zn and Cd. The presence of ectomycorrhizae significantly reduced the translocation factor of Zn and Cd and bioaccumulation factor of Pb and Cd, which enhanced the phytostabilizing potential of P. halepensis seedlings. These results support the use of ectomycorrhizal P. halepensis in the remediation of heavy metal contaminated sites.

scholarly journals Response of Corchorus olitorius Leafy Vegetable to Cadmium in the Soil

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1200
Author(s):  
Sibongokuhle Ndlovu ◽  
Rajasekhar V.S.R. Pullabhotla ◽  
Nontuthuko R. Ntuli
Keyword(s):  
Contaminated Soils ◽  
Translocation Factor ◽  
Reproductive Traits ◽  
Leafy Vegetable ◽  
Leafy Vegetables ◽  
Corchorus Olitorius ◽  
Cd Accumulation ◽  
Cd Toxicity ◽  
Morphological Alterations ◽  
Hormetic Effect

Corchorus olitorius, a leafy vegetable with high nutrient content, is normally collected from the wild, in areas that are prone to cadmium (Cd) toxicity. However, studies on how Cd accumulation affects vegetative and reproductive traits of leafy vegetables in South Africa are limited. Therefore, this study tested the effect of Cd accumulation on C. olitorius morphological traits. Plants were grown under various Cd concentrations and studied for variation in vegetative and reproductive traits as well as accumulation in roots and shoots. Plants exposed to 5 mg/kg Cd had longer roots with higher moisture content, heavier fresh and dried stems, as well as dried leaves, which indicated a hormetic effect in C. olitorius after exposure to low Cd concentration in the soil. Again, plants treated with 5–10 mg/kg Cd, accumulated toxic (>10 mg/kg dry weight) Cd within shoots and roots, with minor morphological alterations. Plants could survive, with some morphological defects, Cd toxicity up to 20 mg/kg in soil. Only plants exposed to 5 mg/kg could reproduce. Cd accumulation increased with an increase in the soil, with higher accumulation in shoots. The translocation factor was high (>1) in all Cd concentrations. In conclusion, C. olitorius can accumulate toxic Cd, and yet grow and reproduce either normally or better than the control. The proposed dose of Cd that induces hormesis in C. olitorius is 5 mg/kg in the soil. Therefore, C. olitorius is suitable for phytoremediation of Cd contaminated soils, but unsafe for consumption when it grows in such areas.

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