Determination method of residual monomers and other organic components in chloroprene latex
A technology of chloroprene latex and determination method, which is applied in the directions of measuring devices, material separation, and analysis materials, etc., can solve problems affecting the accuracy and precision of toluene or ethylbenzene quantification, affecting qualitative and quantitative analysis, and interfering with toluene, etc., to achieve Low toxicity, reduced use of reagents, and effects of avoiding pollution
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Embodiment 1
[0061] (1) Determination of correction factors for styrene and toluene volatilized in chloroprene latex
[0062] Weigh 17.0mg (accurate to 0.1mg) of internal standard methyl isobutyl ketone and add it to a 50mL volumetric flask, dilute to the mark with dioxane solvent, shake well and seal it as the internal standard solution; take about 4.0 Add 1 mL of internal standard methyl isobutyl ketone into a 10 mL volumetric flask, then add about 220 μL of each of the three standard substances of styrene, toluene and ethylbenzene (each about 0.18 g, accurate to 0.1 mg), and use two Dilute the oxane solvent to the mark, shake well and seal it as a standard stock solution.
[0063]Mix 0.8mL water, 1.5mL internal standard solution and 25μL standard stock solution in the headspace bottle of the headspace sampler, seal the headspace bottle of the headspace sampler, and inject the upper layer gas of the mixed solution into the chromatograph ;The conditions in the gas chromatograph are: the ...
Embodiment 2
[0088] (1) Determination of correction factors for styrene and toluene volatilized in chloroprene latex
[0089] Weigh 23.0mg (accurate to 0.1mg) of the internal standard methyl isobutyl ketone into a 50mL volumetric flask, dilute to the mark with dioxane solvent, shake well and seal it as the internal standard solution; take about 4.5 Add 1 mL of internal standard methyl isobutyl ketone into a 10 mL volumetric flask, then add about 200 μL of each of the two standard substances of styrene and toluene (each about 0.18 g, accurate to 0.1 mg), and then use dioxane Dilute the solvent to the mark, shake well and seal it as a standard stock solution.
[0090] Mix 0.6mL water, 1.0mL internal standard solution and 28μL standard stock solution in the headspace bottle of the headspace sampler, seal the headspace bottle of the headspace sampler, and inject the upper layer gas of the mixed solution into the chromatograph ;The conditions in the gas chromatograph are: the inlet temperature...
Embodiment 3
[0116] (1) Determination of correction factors for styrene and toluene volatilized in chloroprene latex
[0117]Weigh 20.0mg (accurate to 0.1mg) of the internal standard methyl isobutyl ketone into a 50mL volumetric flask, dilute to the mark with dioxane solvent, shake well and seal it as the internal standard solution; take about 3.5 Add 1 mL of internal standard methyl isobutyl ketone into a 10 mL volumetric flask, then add about 210 μL of each of the two standard substances of styrene and toluene (each about 0.18 g, accurate to 0.1 mg), and then use dioxane Dilute the solvent to the mark, shake well and seal it as a standard stock solution.
[0118] Mix 0.9mL water, 1.5mL internal standard solution and 28μL standard stock solution in the headspace bottle of the headspace sampler, seal the headspace bottle of the headspace sampler, and inject the upper layer gas of the mixed solution into the chromatograph ; The conditions in the gas chromatograph are: the inlet temperature...
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