Ion Pairing High Pressure Liquid Chromatographic Determination of Amaranth in Licorice Products
Keyword(s):
Abstract A high pressure liquid chromatographic method is described for the determination of amaranth (FD&C Red No. 2; Red No. 2) in licorice products. The Red No. 2 is extracted with a basic buffer solution, cleaned up on a Sep-Pak column, chromatographed on a reverse phase column in the ion pairing mode, and detected at 254 nm. The procedure is time-conservative with accurate and precise results. Recovery data ranged from 93 to 104%, and coefficients of variation were less than 4% for standards and samples.
1981 ◽
Vol 64
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pp. 564-569
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1977 ◽
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1975 ◽
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1978 ◽
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pp. 1424-1427
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1978 ◽
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pp. 1490-1492
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1981 ◽
Vol 64
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pp. 19-24
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