Dispersive solid phase extraction of gold with magnetite-graphene oxide prior to its determination: via microwave plasma-atomic emission spectrometry
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 cost...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Published: |
Royal Society of Chemistry
2016
|
| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/69222/ http://dx.doi.org/10.1039/c6ra19845g |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | 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. |
|---|