Paper Title:
Determination of Trace Silver in Water by FAAS after Concentration and Separation by the Modified Organobentonite Using Dithizone
  Abstract

A new modified organo-bentonite using dithizone(D-O-bentonite) was used for preconcentration, separation and determination of silver(I) in natural water by flame atomic absorption spectrometry (FAAS). The experimental conditions for effective adsorption and elution of trace levels of silver (I) were optimized with respect to different experimental parameters. The influences of some common coexisting ions were also examined. The results show that the silver ion could be adsorbed on the D-O-bentonite. The adsorbed quantitively was affected by the pH value of medium and contact time. In the medium of pH 4-8, the contact time was 15 min, and capacity of the sorbent was 19.7 mg·g-1. The silver(I) adsorbed on the sorbent could be completely eluated by using 1 mol·L-1 HNO3. The preconcentration factor is 100. The detection limit of the method for silver was 0.02 µg·L-1. The method was applied to the pre-concentration/separation of silver in the environmental water with satisfactory results.

  Info
Periodical
Chapter
Chapter 6: Frontiers of Manufacturing and Design
Edited by
Dongye Sun, Wen-Pei Sung and Ran Chen
Pages
3508-3511
DOI
10.4028/www.scientific.net/AMM.71-78.3508
Citation
D. Zhang, Y. L. Zhang, "Determination of Trace Silver in Water by FAAS after Concentration and Separation by the Modified Organobentonite Using Dithizone", Applied Mechanics and Materials, Vols. 71-78, pp. 3508-3511, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dong Zhang, Chun Li Zhang
Abstract:Nanometer barium-stroutium titanate immobilized on aluminum oxide (ABST) was prepared by the citric acid sol–gel method and characterized by...
682
Authors: Xiao Qing Luo, Xiao Yan Lin, Xue Gang Luo, An Kai Luo, Xuan Liang
Abstract:This paper reports the feasibility of using rice husk to remove Ag+ from synthetic wastewater. Effect of various adsorption parameters,...
45
Authors: Xiao Li Xiong, Chen Bin Shao
Abstract:The potential to remove xylenol orange (XO) from aqueous solutions through adsorption on γ-cyclodextrin-grafted carboxymethyl cellulose...
1180
Authors: Xuan Liang, Xue Gang Luo, Xiao Yan Lin, Qiang Mei
G. Others
Abstract:Low cost industrial and agricultural by-products are promising materials for water pollution treatment such as removal of heavy metals. This...
472
Authors: Zheng Jun Gong, Wenbo Zhou, Zhong Ping Qiu
Chapter 7: Pollution Control (Air, Water, Solid)
Abstract:In this study, removal of copper(Ⅱ) from aqueous solutions was examined using corn stalk. In the batch mode adsorption studies, the effects...
1950