Heavy metal absorption
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Heavy metal pollution in soils has attracted an increasing attention around the world in past decades. The contamination of agricultural soils is often a direct or indirect consequence of anthropogenic activities. Such pollutants, particularly heavy metals which are not biologically degraded like many organic pollutants; but tending to accumulated, can endanger public health by being incorporated into the food chain.
3p vilucius 03-03-2023 1 1 Download
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The study aimed to evaluate the concentration of heavy metals in the soil of industrial zones in An Giang province. Soil samples were collected at Binh Hoa and Binh Long industrial parks with 20 monitoring positions in the topsoil. The heavy metals including Copper (Cu), Zinc (Zn), Lead (Pb), Cadmium (Cd) and Arsenic (As) were analyzed by atomic absorption spectroscopy.
10p viwmotors 13-12-2022 3 2 Download
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This paper investigated the presence of cadmium and lead in the tissue samples of three marine shrimps taken from three major landing sites in the area. The samples were processed using nitric acid digestion and the heavy metal concentrations were analyzed using Atomic Absorption Spectroscopy (AAS).
8p vimegwhitman 10-06-2022 8 1 Download
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The application of non-targeted NMR methods combined with ICP-AES quantification provided an efficient strategy for detecting residual heavy metals within plant tissues and soil. Importantly, non-targeted metabolomic analysis helped to reveal the relationships between metabolites distribution in hemp tissues and the sequestered metals.
10p thebadguys 15-01-2022 5 0 Download
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The metal complexes are retained on resin at pH 6.0 and eluted with 1.0 mol L −1 HCl in acetone in both methods. After the optimum conditions were determined, the methods were applied to seawater, stream water, rice, lentil, tea, tobacco, bulgur, chickpea, wheat, red pepper, black pepper, peppermint, and dried eggplant samples in order to determine the levels of copper and cadmium.
13p langthannam 29-12-2021 8 0 Download
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In the current study, a simple and efficient analytical method for preconcentration and determination of Cd(II), Pb(II), and Sn(II) in some cosmetic samples, using ultrasonic assisted-cloud point extraction and flame atomic absorption spectrometry, was developed. The method is based on the ternary complex formations of Sn(II), Pb(II), and Cd(II), which are available in the form of neutral and/or anionic hydroxo complexes (Sn(OH)−3, Pb(OH)−3, Cd(OH)2, and/or Cd(OH)−3), with Victoria Pure Blue BO (VPB +) in the presence of cetylpyridinium chloride at pH 8.
14p langthannam 29-12-2021 8 0 Download
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A new method based on the combination of carrier element-free coprecipitation and flame atomic absorption spectrometric determination has been investigated for simultaneous separation and preconcentration of Pb(II) and Cu(II) ions in some environmental solid and liquid samples. The 2-{3-(4-methylbenzyl)-4-[2-(1H-indol-3-yl)ethyl]-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl}-N’-(phenylmethylene) acetohydrazide (MITA) was utilized as an organic coprecipitating agent without using a carrier element for coprecipitation of the analyte ions.
10p langthannam 29-12-2021 8 0 Download
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The use of microalgae biomass is an alternative solution to the problem of environmental pollution due to heavy metals, one of which is Cr metal in leather tanning liquid waste. However, the ability of biomass to adsorb heavy metals has limitations. Therefore, the algal biomass is immobilized with silica gel in order to obtain a stable structure. This research aims to study the absorption efficiency of Cr (VI) metal by the biomass of Spirulina sp. which is immobilized with silica gel from the tannery liquid waste.
11p langthannam 29-12-2021 6 0 Download
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Domestic water system of Thai Nguyen city originates from Nui Coc lake which has an area of 25km2 . In fact, due to these original areas that have many metal mines, such as tin, lead, zinc, vonfram,..., the content of heavy metal in the water resource raises need for concern. Therefore, we evaluated the content of some elements: Cr, Mn, Cu, Cd, Pb, Hg in the water resource of Nui Coc lake, Tich Luong lake and the domestic water system of Thai Nguyen city to compare with the Vietnamese standard of maximum acceptable heavy metal content in drinking water.
6p thienlangso 15-12-2021 8 0 Download
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Two newly synthesized Schiff bases DMCA and DMBA were used for selective detection of Cd2+ over a wide range of other metal ions in acetonitrile (ACN)/Tris-HCl buffer (10 mM, pH 7.32, v/v 2:1). The sensors can detect Cd2+ ions by colour changes from colourless to orange for DMBA and yellow to reddish for DMCA. Response of the probes towards metal ions was investigated by using UV-vis spectroscopy. The complex stoichiometry between the sensors, DMBA and DMCA, and Cd 2+ was found to be 2:1 and the binding constants were calculated to be 2.65×10 12M−2 and 4.95×10 12M−2 , respectively.
14p tudichquannguyet 29-11-2021 12 1 Download
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In this paper, the protective role of melatonin in counteracting metal-induced free radical generation was highlighted. Using the HPLC-FLD technique melatonin was identified and quantified in the roots and leaves of lemon balm (Melissa officinalis L.), grown under photoperiod conditions. Furthermore, the response of plants pre-treated with exogenous 0.1 mM melatonin to the increased zinc (Zn) and cadmium (Cd) concentrations was observed, with changes in mineral (Ca, Mg), physiological and antioxidant status of the plant during heavy metals stress.
12p tudichquannguyet 29-11-2021 13 1 Download
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This study presents an experimental investigation on the recycling of waste incineration bottom ash (IBA) as a fine aggregate in the production of interlocking concrete bricks (ICB). Before being used, the concentration of heavy metal in IBA was determined to confirm it is a non-toxic material. In this study, the IBA was used to replace crushed sand (CSA) in the brick mixtures at different replacement levels of 0%, 25%, 50%, 75%, and 100% (by volume).
12p chauchaungayxua12 09-07-2021 18 2 Download
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Moc Chau is a large tea material area of Son La province. The analysis of heavy metal content in Moc Chau tea contributed to the evaluation of tea quality. The total concentrations of Iron, Zinc and Copper in tea samples from Son La province in Vietnam were determined using flame atomic absorption spectrometry (FAAS) after dry digestion.
8p tamynhan9 02-12-2020 12 1 Download
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This study has been conducted to determine the concentration of heavy metals Lead (Pb), Cadmium (Cd), Copper (Cu) and Iron (Fe) in soil and some grown vegetables of Jagdalpur. (Bastar) Comparing the results of heavy metals in soil and vegetables by using Atomic Absorption Spectrometer, (Perkin Elmer A Analyst 400) double beam with their respective natural level.
6p angicungduoc8 07-11-2020 11 1 Download
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Accelerated exploitation of oil and gas resources planned and implemented by ONGC and BGEIPL in west coast offshore region would result into stress particularly on marine environment. The long term physical, chemical and biological changes due to routine discharges from offshore installations can best be assessed through a study on accumulation of hydrocarbons and heavy metals in fishes, plankton and sediments which together form biotic and abiotic components of marine environment.
10p chauchaungayxua6 26-06-2020 15 2 Download
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When comparing the heavy metals accumulation in the two cultivars, the results showed that the BT cultivar had higher Cd uptake and accumulation potential than ET. Therefore, BT can be used for phytoremediation of heavy metals in soil but not for providing food and feed.
5p tomhiddleston 27-05-2020 9 1 Download
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In the present study, heavy metal residual concentrations of cadmium (Cd), lead (Pb) and copper (Cu) in cattle and buffalo milk samples collected from three districts of the Northern part of Gujarat state were determined. A total of 800 samples were collected during the entire study in summer and winter seasons.
9p cothumenhmong5 17-05-2020 10 1 Download
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In recent scenario due to indiscriminate human activities the heavy metal pollution is very much concerned because of their toxicity for animal and human beings and their lack of biodegradability. Heavy metal toxicity is linked with a number of diseases but the severity of situation multiplies too many folds if these heavy metals are found in milk, which is the basic food item of vulnerable age group of people.
9p angicungduoc4 26-04-2020 12 1 Download
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The objective of the study is to reveal the seasonal variations in the wastewater quality with respect to heavy metal contamination. To get the extent of the heavy metals contamination, wastewater samples were collected from 5 different locations from in and around river Narmada during the Winter, Summer, Monsoon Rainy and Post- Monsoon seasons. The concentration of heavy metals, such as lead, copper, manganese, zinc, cadmium, irons and chromium were determined using Atomic Absorption Spectrophotometer (AAS).
12p trinhthamhodang1212 06-04-2020 25 3 Download
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Bio sorption potential of cyanobacteria in absorbing lead and chromium was carried out as an experimental study. The algae collected from the rice field are examined for the lead and chromium absorption potential. Visual changes, followed by disintegration of the cyanobacterial mat had gradually progressed with the increase in concentration of lead and chromium from 0 ppm to 150 ppm which indicates the metal absorption.
10p nguaconbaynhay4 22-03-2020 8 2 Download