Dispersive solid phase extraction of gold with magnetite-graphene oxide prior to its determination via microwave plasma-atomic emission spectrometry. Issue 91 (15th September 2016)

• Record Type: Journal Article
• Authors: Ahmad, Hilal; Jalil, Aishah Abdul; Triwahyono, Sugeng
• Is Part Of: RSC advances. Volume 6:Issue 91(2016)
• Page Start: 88110
• Page End: 88116
• Publication Date: 2016-09-15
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra19845g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In this paper we demonstrated the quantitative analysis of gold in environmental water samples using microwave plasma atomic emission spectrometry (MP-AES) after dispersive solid phase extraction (DSPE) on magnetite graphene oxide (m-GO). Abstract : In this paper we demonstrated the quantitative analysis of gold in environmental water samples using microwave plasma atomic emission spectrometry (MP-AES) after dispersive solid phase extraction (DSPE) on magnetite graphene oxide (m-GO). The benefits of the MP-AES are related to cheap analysis costs and improved operational safety with nitrogen used for plasma generation. The detection limit, 3σ m −1, (0.005 μg L −1 ), inter and intra-day precision (2.6% and 3.2%) and dynamic range (0.02–500 μg L −1 ) for m-GO coupled MP-AES were compared and matrix effects were evaluated with respect to environmental samples. Recovery of (spiked) analytes ranges from 97.0 to 101%. The developed MP-AES method can offer a comparable or better performance to flame atomic absorption spectrometry and/or inductively coupled plasma optical emission spectrometry with respect to routine analysis for a regulatory program and may be applied as an active method.