Bioaccumulation of nutrient and heavy metals by Calotropis procera and Citrullus colocynthis and their potential use as contamination indicators

Scientific Research and Essays

Mohammed N. Al-Yemni¹ 

关键词:  ;    Heavy metal;    bioaccumulation;    sediment;    nutrient;    Calotropis procera;    Citrullus colocynthis.;   

DOI  :  10.5897/SRE10.1113

学科分类：社会科学、人文和艺术（综合）

来源: Academic Journals

【 摘 要 】

The concentrations of nutrient heavy metals in the roots, stems and leaves of medicinal plantsCalotropis proceraandCitrullus colocynthis, and in the corresponding sediment samples from Al-Riyadh and Gazan, Saudi Arabia, were investigated to ascertain whether plant species and organs are characterized by differential accumulation, and to test the suitability of the various organs for nutrient and heavy metal bio-monitoring of soil. Nutrient considered were N, Na, K and Ca and heavy metals considered were Cd, Cu and Fe. Between the two plant species,C. colocynthisshowed the higher capacity in Na, Fe and Cu accumulation, whileCalotropis procerashowed the higher capacity in N, K, Ca and Cd accumulation. Significantly positive relationships were observed among the concentrations of N, Ca, Cd and Fe in organs ofC. proceraandC. colocynthis andthose in sediment, indicating the potential use of the two plants for pollution monitoring of these metals. This study demonstrated thatC. proceraandC. colocynthiscould be considered as either a bio-indicator or a bio-accumulator for sediments polluted by nutrient and metals.

【 授权许可】

CC BY