【摘要】：食品包裝防油紙是一種用于防止食品中油脂透過的紙張。而防油紙中含有的全氟辛酸為其主要的有害物質(zhì),全氟化合物是一種新型的持久性污染物,毒理學(xué)研究證明,此類物質(zhì)具有導(dǎo)致器官損傷、神經(jīng)行為缺陷、生殖發(fā)育障礙、脂代謝紊亂以及各種激素分泌失調(diào)等多種癥狀的毒性。防油紙中的全氟辛酸存在遷移到油脂類食品的可能性,給人們身體健康帶來(lái)危害。本文采用氣相色譜質(zhì)譜聯(lián)用技術(shù)(GC-MS)檢測(cè)防油紙中全氟辛酸的殘留以及遷移量。首先通過對(duì)比固相萃取、液-液萃取、超聲提取、索式提取和加速溶劑萃取幾種樣品提取方法確定了選用超聲提取法,并通過對(duì)比確定了提取溶劑、提取溫度。然后進(jìn)行衍生化方式的確定,最終確定衍生溫度為60℃,衍生時(shí)間為60分鐘,并在衍生過程中加入氫氧化鈉溶液。之后,優(yōu)化儀器參數(shù),確定用內(nèi)標(biāo)法進(jìn)行定量,檢測(cè)幾種防油紙樣品中的全氟辛酸殘留。涂布防油紙,檢測(cè)其防油等級(jí),并分別檢測(cè)其全氟辛酸的殘留。選擇一種等級(jí)的涂布防油紙,測(cè)量其在不同溫度下向油脂類食品模擬物的遷移水平,并做出它的遷移模型。結(jié)果表明,測(cè)得兩種普通防油紙樣品中全氟辛酸含量分別為0.6μg/kg和1.86μg/kg,爆米花桶樣品中全氟辛酸含量為2.02μg/kg,燒烤油紙和漢堡紙及小吃包裝紙袋中沒有檢測(cè)到全氟辛酸。對(duì)涂布防油紙進(jìn)行殘留檢測(cè),防油等級(jí)為6級(jí)的防油紙全氟辛酸的含量為0.0091μg/cm2,防油等級(jí)為7級(jí)的防油紙全氟辛酸的含量為0.0241μg/cm2,防油等級(jí)為8級(jí)的防油紙全氟辛酸的含量為0.0281μg/cm2,均沒有超過國(guó)家對(duì)于全氟添加劑使用國(guó)家標(biāo)準(zhǔn)中的限值。對(duì)于含氟涂層防油紙,隨著防油等級(jí)的增高,其所含全氟辛酸的量也增加的更多。對(duì)涂布防油紙進(jìn)行遷移實(shí)驗(yàn),在20℃時(shí),全氟辛酸的遷移量為0.0140μg/cm2-0.0275μg/cm2;在70℃時(shí),全氟辛酸的遷移量為0.0093 μg/cm2-0.0213μg/cm2; 在 121℃時(shí),全氟辛酸的遷移量為0.0039μg/cm2-0.0232μg/cm2。借助軟件對(duì)實(shí)驗(yàn)數(shù)據(jù)進(jìn)行回歸分析,證明在20℃時(shí),全氟辛酸向橄欖油中的遷移規(guī)律符合Boltzmann;在70℃時(shí),全氟辛酸向橄欖油中的遷移規(guī)律符合指數(shù)函數(shù)。
[Abstract]:Food packaging oil-proof paper is used to prevent oil in food through the paper. But the perfluorooctanoic acid contained in the oil-proof paper is its main harmful substance, perfluorooctanoic acid is a new type of persistent pollutant. Toxicological studies have shown that these substances can lead to organ damage, neurobehavioral defects, reproductive disorders, Dyslipidemia and various hormone secretion disorders and other symptoms of toxicity. Perfluorooctanoic acid in oil-proof paper has the possibility of migrating to fatty food, which is harmful to people's health. The residue and migration of perfluorooctanoic acid in oil-proof paper were determined by gas chromatography-mass spectrometry (GC-MS). Firstly, ultrasonic extraction method was selected by comparing solid phase extraction, liquid-liquid extraction, ultrasonic extraction, cable extraction and accelerated solvent extraction, and the extraction solvent and temperature were determined by comparison. Then the derivatization method was determined, and the derivative temperature was 60 鈩，

本文編號(hào)：2256213