A rapid method for the determination of trace Cu and Fe in edible salad oil by graphite furnace atomic absorption spectroscopy
Abstract
In the determination of trace amounts of copper and iron in edible salad oils by graphite furnace atomic absorption spectroscopy (GFAAS), an ashing method with low temperature oxygen plasma was used to effectively eliminate the interference of the organic matrix. Two sample preparation methods were studied, extraction with concentrated nitric acid followed by ashing with the low temperature oxygen plasma to determine the yield of extraction, and direct analysis of the metal content after dilution with methyl isobutyl ketone (MIBK). Results obtained from these methods were compared with the background absorbance by inductively coupled plasma‐atomic emission spectroscopy (ICP‐AES).
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Decomposition of organic contents is a general pretreatment procedure for partial or complete removal of the matrix of edible oils, but it is time-consuming and there is no unique ashing procedure for all metals due to their reactivities and volatilities.
“Decomposition of organic contents is a general pretreatment procedure for partial or complete removal of the matrix of edible oils [19,20], but the process is time-consuming, and there is no unique ashing procedure for all metals due to their reactivates and volatilities.”
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Karimi, M., Dadfarnia, S., Shabani, A. M. H., Tamaddon, F., & Azadi, D. (2015) · Talanta · doi:10.1016/j.talanta.2015.07.021 · Cited by 182 · see citing works
- Authors
- Sun, H.
- Affiliations
- National Tsing Hua University (TW)
- Corresponding author
- Sun, Houng‐Jen
- Venue
- Journal of the American Oil Chemists' Society
- Publisher
- Wiley
- Published
- 1989-04
- Volume
- 66
- Issue
- 4
- Pages
- 549-552
- ISSN
- 0003-021X (ISSN-L)
- 1558-9331
- OpenAlex
- W2091691771
- Cited by
- 15
- References
- 0
- Citations by year
- 2017: 1 · 2015: 3 · 2014: 1
- FWCI
- 0.62
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of the American Oil Chemists Society (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
- Physical Sciences › Engineering › Mechanics of Materials › Laser-induced spectroscopy and plasma
- Life Sciences › Agricultural and Biological Sciences › Food Science › Food and Agricultural Sciences
- Keywords
- copper determination, iron determination, trace metal analysis, nitric acid extraction, sample preparation
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