The effect of EDTA on the extractability of Zinc (Zn), Cadmium (Cd) and Nickel (Ni) in Vertisol and Alluvial soils
Küçük Resim Yok
Tarih
2002
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Ethylendiamintetraacetic acid (EDTA) is persistent in the environment. The presence of EDTA in soil may alter the mobility and transport of Zn, Cd and Ni in soils because of the formation of water soluble chelates, thus increasing the potential for metal pollution of natural waters. Mobility of metals is related to their extractability. To investigate metal extractability affected by EDTA, Zn, Cd and Ni were added to Vertisol and Alluvial soil at rates of 50, 2 and 5 mg kg -1 , respectively. Both natural and metal amended soils were treated with Na 2 EDTA at rates of 0; 0.2 and 0.5 mg kg -1 . After five months of incubation soil samples were extracted with 0.1 N HCl, 0.005 M DTPA + 0.01 M CaCl 2 + 0.1 M TEA (0.005 M Diethylenetriaminepentaacetic acid + 0.01 M Calcium cloride + 0.1 M Triethanolamine) and 1 M Mg(NO 3 ) 2 , the latter of which extracts the exchangeable from of metald (Zn, Cd and Ni). According to experiment results, Zn, Cd and Ni in all extraction increased with increasing rates of EDTA in the natural and metal amended soils. © 2002, Taylor & Francis Group, LLC.
Açıklama
Anahtar Kelimeler
Cd; Chelate; Edta; Extraction; Ni; Soil; Zn
Kaynak
Archives of Agronomy and Soil Science
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
48
Sayı
6
