SN/T 3385-2012Food contact materials. Polymer. Determination of acetaldehyde in polyethylene terephthalate (PET) resin and article-Headspace gas chromatography (English PDF)

SN/T 3385-2012 is the English-translated version of 食品接触材料 高分子材料 聚对苯二甲酸乙二醇酯(PET)树脂及其制品中乙醛的测定 顶空气相色谱法.

SN/T 3385-2012 — This standard specifies the polyethylene terephthalate (PET) resin and its products acetaldehyde headspace chromatographic method. This standard applies to the determination of acetaldehyde in the resin and its products terephthalate (PET) polyethylene terephthalate.

PET resin and its products acetaldehyde measured lower limit 0.3µg/g. Principle 2 In a closed container and a certain temperature, PET resin and its products in the residual acetaldehyde between the gas phase (headspace) and matrix (solid phase) exists Allocation balance.

After equilibrium is reached, it will be introduced into the gas phase portion separated by gas chromatography, detection by flame ionization detector, external standard method Quantified.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 6 pages — is available in the English PDF.

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