Mineral oil sampling

Name Mineral Oil Sample preparation Capillary film, sodium chloride cell... 

Samples are to be taken at those points where on average the greatest numbers of bathers per day are recorded. Samples are preferably to be taken 30 cm beneath the water s surface this does not however apply to mineral oil samples which are taken on the surface. Sampling is to begin two weeks... 

In a chromatographic system the peaks are eluted in accordance with their partition coefficients, i.e. as they are driven or retained by their physicochemical properties with regard to the phase system. For the observer the elution order of complex mixtures resembles an unpredictable pattern and in a first approximation a chromatogram must be looked at as a random mixture of peaks. (Exceptions are homologes, e.g. -alkanes in mineral oil samples.)... 

Figure 2.131 Ultra-fast GC chromatogram of a mineral oil sample. The chromatogram was obtained using a 5 m, 0.1 mm ID, 0.1 im film thickness SE54 column with a temperature program from 40 (12 s) to 350 °C (6 s) at 180°C/min.

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