Paper Title:
Arsenic Speciation Analysis in Environmental Water by HG-AFS after Solid-Phase Extraction Using Multiwalled Carbon Nanotubes
  Abstract

A simple, inexpensive, and sensitive method was developed for the determination of inorganic arsenic species As(III), As(V) and total arsenic in environmental water samples using multiwalled carbon nanotubes (MWCNTs) as solid phase extraction (SPE) adsorbents coupled with hydride generation atomic fluorescence spectrometry (HG-AFS). The procedure is based on selectively absorbance of the chelates of As(III)-ammonium pyrrolidine dithiocarbamate (APDC) on the MWCNTs at pH range of 2.0-5.0, while As(V) was passed through the microcolumn. The retention complexes of As(III)-APDC was eluted completely with 3 mL of 2.0 mol L-1 HCl solution at a flow rate 1.0 mL min-1, and then directly determined by HG-AFS. The effluent of As(V) was determined using thiourea and ascorbic acid as reducing agent for reduce As(V) to As(III). The different parameters that control the preconcention/separation step of As(III) and As(V) and determination have been investigated in detail. Under the optimized conditions, a linear range of 0.03-10.0 ng mL-1 for As(III), along with a detection limits of 0.0026 ng mL-1, and the relative standard deviations for As(III) and As(V) for 0.28-6.30%, were obtained. The proposed method was applied for the analysis of inorganic arsenic species in groundwater and lake water with the recovery of 98.00-102.0%.

  Info
Periodical
Advanced Materials Research (Volumes 113-116)
Edited by
Zhenyu Du and X.B Sun
Pages
76-80
DOI
10.4028/www.scientific.net/AMR.113-116.76
Citation
X. Z. Cheng, X. F. Sun, C. J. Hu, C. Chang, "Arsenic Speciation Analysis in Environmental Water by HG-AFS after Solid-Phase Extraction Using Multiwalled Carbon Nanotubes", Advanced Materials Research, Vols. 113-116, pp. 76-80, 2010
Online since
June 2010
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: Da Peng Wang, San Xiang Wang, Zheng Hui Wang, Li Ming Zhang, Jian Li, Jian Liu, Xing Liu, Huan Yu Jin, Chun Ling Fu, Yan An
Abstract:Biological monitoring for arsenic(As) is usually based upon a determination of urine, blood, nail and hair arsenic concentration, however,...
465
Authors: Yong Bing Huang, Jing Dong, Xian Juan Li, Li Li Wang, Ye Li, Shu Xin Tu
Chapter 14: Water Purification and Wastewater Treatment
Abstract:Ferrum manganese composite materials (1-3μm) had been successfully synthesized by low-cost ferruginous manganese ore in wet granulation to...
2058
Authors: Mei Sun, Gui Jiang Liu, Qiang Hua Wu, Wenqi Liu
Chapter 7: Pollution Control (Air, Water, Solid)
Abstract:A new method was developed for the speciation of inorganic arsenic in coal samples by liquid chromatography coupled to hydride generation...
1991
Authors: Jing Liu, Hua Yang, Yan Zuo, Zhi Min Ren, De Jun Bian
Chapter 5: Environmental Restoration Engineering, Treatment and Removal Technologies and Processes
Abstract:The arsenic-containing rural drinking groundwater was treated by adsorption method in the paper. It was studied that the varieties and...
1129