目的 探究市售常见食品接触类纸制品中2种氯丙醇类污染物的含量及其在不同提取条件下的释放特征。方法 以2023—2025年间采集的166批次市售食品接触类纸制品（包括纸吸管、纸杯纸碗、防油纸类、纸浆模塑类、普通包装纸类、厨房纸巾类等6类）为研究对象,依据GB 4806.8—2022中规定的提取条件进行提取,采用气相色谱-质谱联用仪测定提取液中1,3-二氯-2-丙醇（1,3-DCP）和3-氯-1,2-丙二醇（3-MCPD）的含量。结果 6类纸制品中2种氯丙醇类污染物均有检出,检出率为23%~80%。除纸吸管外,其余5类产品均存在超标情况,超标率为5%~80%,其中厨房纸巾类和防油纸类的污染程度较为突出,3-MCPD最高检出值达902 μg/L。不同类型产品中1,3-DCP检出率较低,氯丙醇类污染以3-MCPD为主。提取条件方面,冷水提取（23 ℃,24 h）条件下3-MCPD的检出值普遍高于热水提取（80 ℃,2 h）,前者为后者的1.1~2.0倍。结论 市售食品接触类纸制品中存在氯丙醇类污染物,部分产品存在超标风险,尤其在厨房纸巾类和防油纸类中污染水平较高。氯丙醇在常温长时间浸泡条件下更易提取。
Abstract
The work aims to investigate the concentrations of two chloropropanols contaminants in commercially available food-contact paper products and their release characteristics under different extraction conditions. A total of 166 batches of commercially available food-contact paper products (including paper straws, paper cups/bowls, greaseproof paper, molded pulp products, general packaging paper, and kitchen towel paper) collected between 2023 and 2025 were analyzed. Extraction was performed according to the extraction test conditions specified in GB 4806.8-2022. The contents of 1,3-dichloro-2-propanol (1,3-DCP) and 3-chloro-1,2-propanediol (3-MCPD) in the extracts were determined by gas chromatography-mass spectrometry. Two chloropropanols contaminants were detected in all six categories of paper products, with detection rates ranging from 23% to 80%. Except for paper straws, the other five product categories exhibited exceedances of regulatory limits, with rates ranging from 5% to 80%. Kitchen towel paper and greaseproof paper demonstrated notably higher contamination levels, with a maximum detected value of 902 μg/L for 3-MCPD. The detection rate of 1,3-DCP was relatively low across product types, with 3-MCPD being the primary chloropropanols contaminant. Regarding extraction conditions, the detected values of 3-MCPD under cold-water extraction (23 ℃, 24 h) were generally higher than those under hot-water extraction (80 ℃, 2 h), with the former being 1.1 to 2.0 times the latter. In conclusion, chloropropanols contaminants are in commercially available food-contact paper products, with some products posing potential exceedance risks. Particularly, kitchen towel paper and greaseproof paper show elevated contamination levels. Chloropropanols are more prone to extraction under prolonged immersion at room temperature.
关键词
食品接触纸制品 /
氯丙醇 /
1,3-二氯-2-丙醇 /
3-氯-1,2-丙二醇 /
湿强剂
Key words
food-contact paper products /
chloropropanols /
1,3-dichloro-2-propanol /
3-chloro-1,2-propanediol /
wet-strength agent
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