Modified Triton-X100 coated Poly Vinyl Chloride for solid phase extraction and determination of trace amount of Cd2+,Pb2+,Zn 2+ in some food samples

A selective, sensitive and efficient method for preconcentration of trace amounts of Cd(II), Pb(II) and Zn(II) ions based on the uptake of their complexes with 3, 4 , 5 tri Methyl – ((1 H – Indol – 3 – yl) (phenyl) methyl) – 1H – indole. (TMBPMI). loaded on Triton X-100 coated poly vinyl chloride has been reported. The influences of the analytical parameters including pH, ligand amount, surfactant type and concentration, eluting condition and sample volume on metal ions recovery were investigated. The method has been successfully applied for the extraction of these ions content in some real samples of soil and plants. The extraction efficiency was > 97% with low relative standard deviation (RSD < 2.4%) and the preconcentration factor of 90 (6 mL elution volume for a 250 mL of sample volume).

کلیدواژه ها:

Surfactant coated PVC ، Atomic absorption spectrometry ، Solid phase extraction