Method of measuring content of n-octanol in sample
A technology of n-octanol and samples, which is applied in the field of determination of n-octanol content in samples, can solve the problems that no precedents for n-octanol detection and analysis have been found, and achieve the effects of low detection limit, good specificity and sensitive detection method
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Embodiment 1
[0035] Embodiment 1: measure the method for n-octanol content in H acid stripping liquid, comprise the steps:
[0036] Determination of the standard curve: Weigh 1.0482g of n-octanol, dilute with ethanol to 100mL, shake well to obtain a stock solution with a concentration of 10482ppm, then take 10mL of the stock solution and dilute with ethanol to 100mL to obtain 1048.2ppm standard working solution, and then diluted 100, 25, 15, 10, and 2.5 times with ethanol to obtain working solutions with concentrations of 10.482ppm, 41.928ppm, 69.880ppm, 104.82ppm, and 419.28ppm, and each sampled 10mL in a headspace bottle carry out testing. The peak area of n-octanol at each concentration was measured, and the peak area was plotted against the concentration to obtain a standard curve by fitting.
[0037] The first pretreatment step: Take 10mL of H acid stripping solution mixed with ethanol in a 20mL headspace bottle, and use the static headspace method for the first step of pretreatmen...
Embodiment 2
[0042] Embodiment 2: the method for measuring n-octanol content in lincomycin stripping solution comprises the steps:
[0043] The determination of the standard curve is the same as in Example 1.
[0044] The first pretreatment step: Take 10mL of lincomycin back-extraction solution and mix methanol aqueous solution in a 20mL headspace bottle, and use the static headspace method for the first step of pretreatment; the condition parameters of the static headspace method are: equilibrium temperature 60°C , the equilibration time is 60 minutes, the sample is injected once, and the injection volume is 1mL;
[0045] The second pretreatment step: the sample is brought into the gas chromatography column by the carrier gas, and the second step pretreatment is performed by gas chromatography; the condition parameters of the gas chromatography are: the carrier gas is helium, the carrier gas flow rate is 2.0mL / min, ; The initial column temperature is 50°C, keep for 5 minutes, the heating r...
Embodiment 3
[0049] Embodiment 3: measure the method for n-octanol content in peach aldehyde solution, comprise the steps:
[0050] The determination of the standard curve is the same as in Example 1.
[0051] The first pretreatment step: take 10mL peach aldehyde solution mixed with ethanol in a 20mL headspace bottle, and use the static headspace method for the first step of pretreatment; the condition parameters of the static headspace method are: equilibrium temperature 90 ° C, equilibrium time 30 minutes , inject once, and the injection volume is 1mL;
[0052] The second pretreatment step: the sample is brought into the gas chromatography column by the carrier gas, and the second step pretreatment is performed by gas chromatography; the condition parameters of the gas chromatography are: the carrier gas is helium, the carrier gas flow rate is 2.0mL / min, ; The initial column temperature is 100°C, keep it for 1 minute, the heating rate is 20°C / min, raise the temperature to 280°C, and kee...
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