Novel method for the fast preconcentration and monitoring of a ppt level of lead and copper with a modified hexagonal mesoporous silica compound and inductively coupled plasma atomic emission spectrometry

Mohammad Reza Ganjali; Leila Hajiagha Babaei; Alireza Badiei; Ghodsi Mohammadi Ziarani; Aliakbar Tarlani

doi:10.2116/analsci.20.725

Novel method for the fast preconcentration and monitoring of a ppt level of lead and copper with a modified hexagonal mesoporous silica compound and inductively coupled plasma atomic emission spectrometry

Anal Sci. 2004 Apr;20(4):725-9. doi: 10.2116/analsci.20.725.

Authors

Mohammad Reza Ganjali¹, Leila Hajiagha Babaei, Alireza Badiei, Ghodsi Mohammadi Ziarani, Aliakbar Tarlani

Affiliation

¹ Department of Chemistry, Tehran University, Tehran, Iran. Ganjali@Khayam.ut.ir

PMID: 15116976
DOI: 10.2116/analsci.20.725

Abstract

A novel method for the rapid extraction and determination of a ppt level of Pb2+ and Cu2+ ions using partial silylated MCM-41 modified by a new salophen and inductively coupled plasma atomic emission spectrometry (ICP-AES) is introduced. The preconcentration factor of the method is 500, and the detection limits of Pb2+ and Cu2+ are 335 and 34 ng L(-1), respectively. The time and efficiency of extraction, the pH and flow rate, the type and minimum amount of acid for stripping of Pb2+ and Cu2+ from modified MCM-41 and the break-through volume were investigated. The maximum capacity of 4 mg of silylated MCM-41 modified by salophen used was found to be 150 +/- 4 and 117 +/- 3 microg of Pb2+ and Cu2+, respectively.