Page 447 - SUBSEC October 2017_Neat
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MODULE 2
ANALYTICAL METHODS AND SEPARATION TECHNIQUES
2. The chromatogram in Figure 2 is obtained when a mixture of organic compounds, A – D is analysed
by gas-liquid chromatography.
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Figure 2: Chromatogram
(a) Define EACH of the following terms:
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(i) Retention time
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[1 mark]
(ii) Mobile phase
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[1 mark]
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