scholarly journals Veronica becabonga L. as a hyperaccumulatorplant for cadmium

2019 ◽  
pp. 507-511
Author(s):  
Naser Hosseini ◽  
Majid Mahdiyeh ◽  
Hossein Salehi
Keyword(s):  
Heavy Metal ◽  
Environmental Problem ◽  
Atomic Absorption Spectrophotometry ◽  
Culture Solution ◽  
Major Objective ◽  
Cd Uptake ◽  
Linear Pattern ◽  
Flame Atomic Absorption ◽  
Shoot Tissue ◽  
High Concentrations

Heavy metal pollution of water is a major environmental problem facing the modem world.The major objective of this research was to evaluate the potential of water-speedwell plant,Veronica becabonga L. to uptake and accumulate heavy metal cadmium under greenhouseconditions, Veronica becabonga L., were cultured in 3% Hoagland's nutrient medium, whichwas supplemented with 0, 25, 50,100, 200, 300 mg/I of Cd(NO3)2 4H2O over one weektreatment period. Plants were harvested at the end of this period and heavy metals from theentire shoot tissue was extracted using the closed Teflon vessel method and metal content inthe extract was estimated using a Flame atomic absorption spectrophotometry. The resultsshowed that the uptake and accumulation of Cd in V becabonga L. showed significantincrease when metal concentration was increased. The highest amount of Cd accumulationwas detected at 100mg/I Cd(NO3)24H2O in the culture solution that was 20660.3 mg/kg DWof shoots. The linear pattern of uptake suggest the involvement of both active and passivetransport mechanisms for Cd uptake, Finally, since the high concentrations cadmiumaccumulation in shoots of plants has far exceeded 0.01% DW V becabonga L. is ahyperaccumulator plant for this metal and has potential for phytoremediation of watercontaminated with cadmium,

scholarly journals Evaluation of the potential of (pelargonium roseum) scented geranium plant to uptake and accumulate lead

2019 ◽  
pp. 139-145
Author(s):  
Majid Mahdiyeh ◽  
Mohammad Reza Sangi ◽  
Malek Soleimani ◽  
Abolfazle Tagavi
Keyword(s):  
Day Treatment ◽  
Culture Solution ◽  
Transport Mechanisms ◽  
Passive Transport ◽  
Lead Uptake ◽  
Major Objective ◽  
Soil System ◽  
Linear Pattern ◽  
High Concentrations ◽  
Pelargonium Roseum

The major objective of this investigation was to evaluate the potential of scentedgeranium plant, Pelargonium roseum to uptake and accumulate lead under greenhouseconditions. Plants were grown in an artificial soil system and exposed to a range of leadconcentrations (0-2500mg.L- 1 Pb (NO3)2) in over a 14 day treatment period. The resultsshowed that the uptake and accumulation of lead in shoot and root followed a similartrend. The highest amount of lead accumulation was detected at 2500mg.L- 1 lead nitratein the culture solution that was 86566.68±7864 mg.kg-' DW for roots and4416.04±502.27 mg.kg-' DW for shoots. The linear pattern of uptake suggests theinvolvement of both active and passive transport mechanisms for lead uptake. Finally,because the high concentrations of lead found in shoots of scented geranium plants hasfar exceeded 0.1 % DW, Pelargonium roseum may be a new hyperaccumulator speciesfor this metal and be used for phytoremediation industry.

Potentially toxic metals and metalloids in surface water intended for human consumption and other uses in the Mantaro River watershed, Peru

2020 ◽  
Vol 15 (No. 4) ◽  
pp. 237-245
Author(s):  
María Custodio ◽  
Daniel Álvarez ◽  
Walter Cuadrado ◽  
Raúl Montalvo ◽  
Salomé Ochoa
Keyword(s):  
Surface Water ◽  
Toxic Metals ◽  
Atomic Absorption Spectrophotometry ◽  
Water Bodies ◽  
Human Consumption ◽  
Potentially Toxic Metals ◽  
Metals And Metalloids ◽  
Flame Atomic Absorption ◽  
Mine Wastewater ◽  
High Concentrations

The concentration of Cu, Fe, Pb, Zn and As in the surface water intended for human consumption and other uses in the Mantaro River basin were analysed using multivariate methods. The water samples were collected from seven water bodies in the Junín region in June 2019, in the low discharge period. In each body of water, a sector with six sampling sites was established. The Cu, Fe, Pb, Zn and As contents were determined by the flame atomic absorption spectrophotometry method. The correlation analysis revealed positive and significant correlations (P < 0.05) for the Zn/Pb, Pb/Fe and Zn/Fe pairs with a good association, higher than 0.80 and for the Pb/Cu, Fe/Cu, As/Pb and As/Zn pairs a weak degree of association (P < 0.05). The analysis of the main components showed three components with their own values > 1. The hierarchical grouping analysis classified the evaluated water bodies into three groups according to the concentration of the Cu, Fe, Pb, Zn and As. The high concentrations of heavy metals and arsenic recorded in the CIMIRM and MERIS irrigation channels reveal that the Mantaro River continues to be a sink for mine wastewater discharges and runoff from mining liabilities at the headwaters of the Mantaro basin. It is, therefore, necessary to implement urgent management policies to control and reduce the levels of contamination by potentially toxic metals and metalloids in the Mantaro River.

scholarly journals Acids and Anions Effects on the Distrubution of Cadmium Between Buffered Aqeuous Phases and 4,4´-(1e,1e´)-1,1´-(Ethane-1,2-Diylbis (Azan-1-Yl-1ylidene)) Bis(5-Methyl-2-Phenyl-2,3-Dihydro-1h-Pyrazol-3-Ol) Solutions

2019 ◽  
Vol 35 (6) ◽  
pp. 1702-1711
Author(s):  
J. Godwin ◽  
L. S. Tella ◽  
A. N. Ebelegi ◽  
N. Ayawei
Keyword(s):  
Chloroform Solution ◽  
Atomic Absorption Spectrophotometry ◽  
Metal Extraction ◽  
Complexing Agents ◽  
Equilibration Time ◽  
Mixed Ligands ◽  
Flame Atomic Absorption ◽  
Before And After ◽  
The Difference ◽  
High Concentrations

The effect of some acids, anions and auxiliary complexing agents on the extraction of Cadmium (II) from aqueous solutions buffered to pH 7.5 using a chloroform solution of the Schiff base ligand 4,4´-(1E,1E´)-1,1´-(ethane-1,2-diylbis(azan-1-yl-1ylidene))bis(5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-ol) (H2BuEtP) alone and in the presence of 1-(3-hydroxy-5-methyl-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl) butan-1-one (HBuP) after an equilibration time of sixty minutes was investigated. Working concentration of Cd(II) was 50mgL-1, while a range from 0.001M-3.0M was used for acid and 0.001M-1.0M for anions and auxiliary complexing agents. Extraction raffinates were analysed for Cd(II) using Flame Atomic Absorption spectrophotometry and Distribution Ratios. Percentage Extractions (%E) were calculated by difference of Cd(II) concentrations before and after equilibration. The mixed ligands H2BuEtP/HBuP organic phase was a better extractant for Cadmium than H2BuEtP alone but the difference was not significant for all acids, Cl-, Oxalate and Tartrate. The results indicated that at lower concentrations of the acids, anions and auxiliary complexing agents, a releasing effect occurred with improved extraction of Cadmium > 90% in most cases and at high concentrations there was reduced percentage extraction due to masking of Cadmium from formation of stable salts of Cadmium. Comparing results with other those of other metals studied under same conditions showed that multi-metal extraction with the ligand (H2BuEtP) is possible. H3PO4, H2SO4, HCl, PO43-, EDTA and Oxalate all showed theoretical potentials for separating Cadmium from other studied metals with Separation Factors βxy = Dx/Dy close to and above 104.

Analysis of Lead Heavy Metal (Pb) Contamination on Matte Lipstick Preparations for Sale in Banda Aceh City Aceh Market

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Rizki Andalia ◽  
Mulia Aria Suzanni ◽  
Rini Rini
Keyword(s):  
Heavy Metal ◽  
Atomic Absorption ◽  
Atomic Absorption Spectrophotometry ◽  
The Body ◽  
Permissible Limit ◽  
The Sun ◽  
Absorption Spectrophotometry ◽  
Pb Contamination ◽  
Body Organ ◽  
Banda Aceh

Lipstick or lip dye is a cosmetic dose that serves to coloring, decorative the lips, as a moisturizing material and protect the lips from exposure the sun to provide optimum results. Lipstick should not contain chemicals such as lead (Pb) because the Pb is a heavy metal that is very dangerous when continuously used on the skin, because it will be absorbed into the blood and attack the body organ causing the onset of disease. According to BPOM that the lead rate on the lipstick does not exceed the permissible limit of 20 mg/kg or 20 ppm.This research aims to know the levels contained in the samples are 4 brands of matte lipstick that are sold in the Aceh market in Banda Aceh City with the method of atomic absorption spectrophotometry (AAS). The results showed that on the 4 brands of lipstick matte contain heavy metal lead (Pb) with a rate still qualified allowed by BPOM  is samples A, B, C, and D, respectively at 0.24 ppm; 0.10 ppm; 2.87 ppm and 1.32 ppm, so that the 4 brands of lipstick matte are still used.

scholarly journals Humic + Fulvic acid mitigated Cd adverse effects on plant growth, physiology and biochemical properties of garden cress

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ertan Yildirim ◽  
Melek Ekinci ◽  
Metin Turan ◽  
Güleray Ağar ◽  
Atilla Dursun ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Adverse Effects ◽  
Plant Growth ◽  
Fulvic Acid ◽  
Pollution Level ◽  
Hydroxyl Groups ◽  
Cd Stress ◽  
Garden Cress ◽  
Cd Uptake ◽  
Fresh Leaf

AbstractCadmium (Cd) is a toxic and very mobile heavy metal that can be adsorbed and uptaken by plants in large quantities without any visible sign. Therefore, stabilization of Cd before uptake is crucial to the conservation of biodiversity and food safety. Owing to the high number of carboxyl and phenolic hydroxyl groups in their structure, humic substances form strong bonds with heavy metals which makes them perfect stabilizing agents. The aim of this study was to determine the effects of humic and fulvic acid (HA + FA) levels (0, 3500, 5250, and 7000 mg/L) on alleviation of Cadmium (Cd) toxicity in garden cress (Lepidium sativum) contaminated with Cd (CdSO4.8H2O) (0, 100, and 200 Cd mg/kg) under greenhouse conditions. Our results showed that, Cd stress had a negative effect on the growth of garden cress, decreased leaf fresh, leaf dry, root fresh and root dry weights, leaf relative water content (LRWC), and mineral content except for Cd, and increased the membrane permeability (MP) and enzyme (CAT, SOD and POD) activity. However, the HA + FA applications decreased the adverse effects of the Cd pollution. At 200 mg/kg Cd pollution, HA + FA application at a concentration of 7000 mg/L increased the leaf fresh, leaf dry, root fresh, root dry weights, stem diameter, leaf area, chlorophyll reading value (CRV), MP, and LRWC values by 262%, 137%, 550%,133%, 92%, 104%, 34%, 537%, and 32% respectively, compared to the control. Although the highest H2O2, MDA, proline and sucrose values were obtained at 200 mg/L Cd pollution, HA + FA application at a concentration of 7000 mg/L successfully alleviated the deleterious effects of Cd stress by decreasing H2O2, MDA, proline, and sucrose values by 66%, 68%, 70%, and 56%, respectively at 200 mg/kg Cd pollution level. HA + FA application at a concentration of 7000 mg/L successfully mitigated the negative impacts of Cd pollution by enhanced N, P, K, Ca, Mg, Fe, Mn, Cu, Mn, Zn, and B by 75%, 23%, 84%, 87%, 40%, 85%, 143%, 1%, 65%, and 115%, respectively. In addition, HA + FA application at a concentration of 7000 mg/L successfully reduced Cd uptake by 95% and Cl uptake by 80%. Considering the plant growth parameters, the best results were determined when HA + FA concentration was 7000 mg/L. We have shown that, it is critical to apply a humic substance with high percentage of FA, which was 10% in this study, to mitigate the adverse effects of heavy metal stress on plant growth. In conclusion, the application of HA + FA may be suggested as an effective solution for reducing the Cd uptake of the plants by stabilizing Cd in soil and preventing translocation of Cd from the roots of plant to its shoot and leaves.

scholarly journals Temporal and spatial variation on heavy metal concentrations in the oyster Ostrea equestris on the northern coast of Rio de Janeiro State, Brazil

2005 ◽  
Vol 65 (1) ◽  
pp. 67-76 ◽  
Author(s):  
A. G Ferreira ◽  
A. L. S. Machado ◽  
I. R. Zalmon
Keyword(s):  
Heavy Metal ◽  
Spatial Variation ◽  
Rio De Janeiro ◽  
Dry Weight ◽  
Temporal Variations ◽  
Average Concentration ◽  
Northern Coast ◽  
High Concentrations ◽  
Janeiro State ◽  
Ostrea Equestris

Heavy metal (Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) concentrations were determined by ICP-AES in Ostrea equestris from three beaches (Barra do Furado, Buena, and Ponta do Retiro) on the northern coast of Rio de Janeiro State. The average concentration was 0.8 ± 0.18, 0.4 ± 0.21, 58 ± 25.6, 249 ± 52.3, 11 ± 1.31, 0.55 ± 0.16, 0.13 ± 0.11, and 1131 ± 321 µg.g-1 dry weight for Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn respectively. Significant spatial variation (p < 0.05) between the samples areas occurred for Cr, Pb, and Zn with higher values in Barra do Furado; and for Cu in Ponta do Retiro. Significant temporal variations (p < 0.05) were observed for all metals except Cu. Temporal variability may be related to changes in the inputs of metals associated with suspended particles. Concentrations were similar to those found in areas under low pollution impact, except for Zn, the high concentrations of which probably reflect the physiological characteristics of these organisms.

scholarly journals Evaluation of bacteriological parameters and heavy metal contents on water of Tinau river, Butwal, Rupandehi, Nepal

Our Nature ◽  
2017 ◽  
Vol 15 (1-2) ◽  
pp. 1-6
Author(s):  
Basant Pandey ◽  
Anjana Devkota
Keyword(s):  
Heavy Metal ◽  
Surface Water Quality ◽  
Heavy Metal Concentration ◽  
Total Coliform ◽  
Flame Atomic Absorption ◽  
Metal Contents ◽  
Bacterial Enumeration ◽  
Different Seasons ◽  
Plate Counts ◽  
Bacteriological Parameters

The present work was undertaken to assess the surface water quality and discuss the potability of water by analyzed data of bacteriological (total Coliform and Faecalform) characters and heavy metals content (Fe, Mn, Zn, Pb, Cr and Cu) in the water of Tinau river. The study was carried out in the year 2011/2012 by selecting four spots within three different seasons: winter, summer and rainy. For bacterial enumeration, bacterial plate counts were carried out using the pour plate method with nutrient agar; while for determination of heavy metal concentration, Flame Atomic Absorption Spectro-photometry was used. The heavy metal content was within the range of WHO guideline for drinking purpose. However, on the basis of bacteriological parameters the water was not safe to consume without treatment. This study will also help to make aware those local people or adjacent farmers for proper management of waste disposal and also to minimize use of synthetic inputs.

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