Suitability of bangkok sewage and nightsoil sludges for agricultural use with emphasis on potentially toxic elements

Eckhardt, H.; Khanal, Samir Kumar

doi:10.1080/10934529909376944

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…The results corresponded with those obtained by Eckhardt and Khanal [8] and by Lombi et al, [9] according to whom Zn, Cu, and Cd were predominantly accumulated in the leaves of sunflower.…”

Section: Oil Cropssupporting

confidence: 91%

Heavy Metal Accumulation and Distribution in Oil Crops

Angelova

Ivanova

Ivanov

2004

Comm Soil Sci Plant An

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To ascertain the level of pollution and the way the heavy metals enter oil crops, soil, and plant samples were taken at different distances from the source of pollution, the Non-Ferrous-Metal Works (NFMW) near Plovdiv (0.5 and 15 km). The contents of the heavy metals in the plant material (roots, stems, leaves, seeds, fruit shell) and sunflower oil and rapeseed oil were determined. The quantitative measurements were carried out with inductively coupled plasma emission spectrometer. Peanuts (Arachis hypogaea L.) were the crop with the highest uptake of heavy metals from the soil, followed by rapeseed (Brassica napus L. a napus), sesame (Sesamum indicum L.), ORDER REPRINTS and sunflower (Helianthus annuus L.). The distribution of the heavy metals in the organs of the crops had a selective character that in peanuts decreased in the following order: roots > stems > leaves > fruit shell > seeds, in sunflower-leaves > roots > stems > seeds > fruit shell, and in sesame and rapeseedleaves > stems > roots > fruit shell > seeds. A clearly distinguished tendency toward a decrease of the contents of heavy metals in oil crops was observed with increasing of the distance away from the NFMW. The quantities of lead (Pb), copper (Cu), and cadmium (Cd) in the rapeseed oil, obtained from rapeseed, grown 0.5 km away from the NFMW, were higher than the accepted maximum permissible concentrations. In the oil from sunflower, grown in the region of the NFMW, the contents of Pb and Cu exceeded about two times the maximum permissible concentration and could be hazardous for the people to consume it. Sunflower and rapeseed could be grown in industrially polluted regions until stage ''blossoming'' and be used for fodder for the animals.

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“…The results corresponded with those obtained by Eckhardt and Khanal [8] and by Lombi et al, [9] according to whom Zn, Cu, and Cd were predominantly accumulated in the leaves of sunflower.…”

Section: Oil Cropssupporting

confidence: 91%

Heavy Metal Accumulation and Distribution in Oil Crops

Angelova

Ivanova

Ivanov

2004

Comm Soil Sci Plant An

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“…Therefore, different results can be obtained in studies conducted by researchers. Indeed, Angelova et al (2016), Eckhardt &Khanal (1999), andLombi et al (1998) stated in their studies that Pb, Zn and Cd heavy metals mainly accumulate in the leaves of sunflower plants. The findings obtained in this study were also compatible with the results of theses studies.…”

Section: Resultsmentioning

confidence: 99%

Maden Sahasından Ağır Metallerin (Cd, Zn, Pb) Ayçiçeği (Helianthus annuus) Bitkisiyle Fitoekstraksiyonu

Aybar

Sağlam

Dağhan

et al. 2023

Kastamonu Üniversitesi Orman Fakültesi Dergisi

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Aim of study: The aim of this study was to determine the phytoremediation capacity of sunflower (Helianthus annuus L.), which can also be used as a bioenergy plant, in soils contaminated with copper (Cu), zinc (Zn) and lead (Pb) from the waste dumping sites during the mining operations. Area of study: Phytoremediation study was carried out in Artvin Coruh University Research greenhouse environment. Material and Methods: Plants were grown by mixing clean and contaminated soil at the rates of 0%, 50% and 100%. Bioaccumulation (BAF) and translocation (TF) factors were calculated by measuring heavy metal concentrations in soil and plant samples. The bioaccumulation factor is calculated by dividing the metal concentration in the shoots with the metal concentration in the soil. The translocation factor expresses the ratio of the metal concentration in the plant green parts to the root metal concentration. Main results: The sunflower plant has accumulated the highest Zn in the shoots, while Cu and Pb have accumulated the highest in the roots. The mean BAF values of the plants were determined as 0.72 for Zn, 0.5 for Pb and 0.28 for Cu, while the mean TF values were determined as 1.25 for Zn, 0.97 for Pb and 0.52 for Cu. Highlights: The findings show that the sunflower plant can be used in the phytostabilization of Cu metal and in the phytoextraction of Zn and Pb metal to reclaim heavy metal contaminated soils.

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“…Omega-6-fatty acid and mega-3-fatty acid were more extracted by supercriticalfluid extraction rather than by other extraction processes [21,31]. Even though supercritical-fluids procedure is one of the most efficient extraction processes in food products [15], it needs to be improved on selectivity not to extract hazardous components such as heavy metals.…”

Section: Change Of Heavy Metal Contents By Extracting Oilsmentioning

confidence: 99%

“…Especially, oilseeds of plants easily uptake heavy metals from soil and accumulate them, even though different plants have different distributional character of heavy metals to organs such as roots, stems, leaves, fruit shell and seeds. Chizzola [13] ascertained that seeds of sunflowers contained high level of Cd, while some studies show that roots and leaves accumulate more heavy metals than seeds [14,15]. However, edible oils do not contain as high level of heavy metals as seeds [16].…”

Section: Introductionmentioning

confidence: 99%

Effects of food processing methods on migration of heavy metals to food

et al. 2019

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Heavy metals including Lead (Pb), Cadmium (Cd), Arsenic (As) and Aluminium (Al) were analysed in oilseeds, noodles, tea leaves and their processed or cooked products to study the effects of food processing methods on migration of heavy metals. The heavy metals were determined with ICP-MS and ICP-OES following microwave-assisted acid digestion. Heavy metals in oilseeds, noodles and teas were reduced by extracting oils, boiling noodles, and infusing teas. And the transfer of heavy metals into boiling water and infusion tea was increased as the boiling and infusion time is increased. Heavy metals in foods are water soluble and heavy metals in foods would be decreased when foods are processed or cooked with water. Furthermore, it is needed to determine the migration rates in other cooked foods and assess the risk of heavy metals with concentrations calculated by the migration rates.

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Suitability of bangkok sewage and nightsoil sludges for agricultural use with emphasis on potentially toxic elements

Cited by 6 publications

References 2 publications

Heavy Metal Accumulation and Distribution in Oil Crops

Heavy Metal Accumulation and Distribution in Oil Crops

Maden Sahasından Ağır Metallerin (Cd, Zn, Pb) Ayçiçeği (Helianthus annuus) Bitkisiyle Fitoekstraksiyonu

Effects of food processing methods on migration of heavy metals to food

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