Bioaccumulation and Translocation of Heavy Metals from Coastal Soil by Wild Halophytes

Abstract

In the present study, six native halophytes were collected from soil of northern Nile Delta to evaluate their phytoremediation potential of heavy metals. For this purpose, soil, the aboveground parts and roots of the samples were analyzed for total concentrations of Fe, Pb, Ni, Co and Cd using atomic absorption spectrometer. The concentrations of different heavy metals in soils have the sequence of Fe>Ni>Pb>Co>Cd. The pollution quantification for each metal in the study area indicated that, the extremely high enrichment value for Cd; very high enrichment values for Pb and Co and low enrichment values for Ni and Fe; The contamination factor has very high for Cd; moderate for Pb and Co and low for Ni and Fe, while the contamination degree (CD) indicates that the study area is considered to be coast with low to moderate contamination degree (2.74 and 10.29). In the study area, the concentrations of heavy metals in plant species have the order of Fe>Pb>Ni>Cd>Co.

Alteration in phenological parameters, above‐ and belowground biomass, nutrient contents, and their pools with phenological stages of Salicornia brachiata Roxb

“…Available K + and Na + were extracted using 1 N NH 4 OAc (Hanway & Heidel, 1952) and estimated by flame photometer. The bioaccumulation factor (BF) for Na + was computed by the formula: BF = (aboveground Na + content/soil Na + content) and translocation factor (TF) for Na + was calculated as TF = (aboveground Na + content/belowground Na + content) (El‐Amier et al, 2017; Lutts & Lefèvre, 2015).…”

Acumulaciones de hierro en agroecosistemas bananeros (Milagro, Ecuador): Una revisión bibliográfica de algunos factores que intervienen en la salud y nutrición del cultivo

“…El muestreo continuo permite planificar, orientar y sustituir fertilizantes para lograr una nutrición adecuada (de Deus et al, 2018). Motivo por el cual se cuantificó el factor de bioacumulación de elementos para determinar la capacidad de absorción de la planta sobre la cantidad de nutrientes presentes en el suelo cultivable (El-Amier et al, 2017). El factor de bioacumulación fue calculado a partir de la cantidad del elemento absorbido por la planta, dividido entre la cantidad del elemento presente en el suelo (Maldonado-Magaña et al, 2011).…”

“…Se sabe que una pequeña parte del Fe presente en el suelo es acumulada en la biomasa foliar, estos resultados coinciden aun cuando se utilizan sustratos enriquecidos con Fe-EDTA (Oliveira et al, 2014), dado que las plantas pueden producir nanocomplejos de Fe en la superficie de la raíz para fitoestabilizar y contrarrestar el exceso de este elemento en el suelo (Pardha-Saradhi et al, 2014). El factor de bioacumulación del Fe en diferentes plantas es inferior a 0,4 (El-Amier et al, 2017). Sin embargo, los resultados observados en la plantación bananera San Valentín supera 3,6 de bioacumulación de Fe, notándose además una alta acumulación de B, Mn, Zn y K, éste último debido a la gran demanda en el cultivo.…”

Toxicological Assessment of Crops Grown in Soils Amended with Municipal Solid Waste Ash

“…The extent of heavy metals contamination in soil was determined using the index of geoaccumulation which indicates soil level of contamination and is categorized into seven classes varying from uncontaminated to extremely contaminated [13,11]. The index of geo-accumulation is given as:…”

“…The waste ash derived soils are used as amendment on farmland without regard to its constituent element e.g. heavy metals [11]. Safety evaluation is therefore required in order to safeguard the health of consumers.…”