食品包裝材料聚乙烯中有害物質(zhì)的檢測(cè)方法研究

制藥工程論文編號(hào):ZY017    論文字?jǐn)?shù):13363,頁(yè)數(shù):23

目 錄
中文摘要
英文摘要
目錄
1 緒論 1
 1.1 食品包裝材料聚乙烯（PE 1
 1.2 增塑劑 1
 1.3 鄰苯二甲酸酯 2
 1.4 樣品預(yù)處理影響因素 6
 1.5 國(guó)內(nèi)外測(cè)定方法的概況 7
2 實(shí)驗(yàn)部分 8
 2.1 主要儀器、試劑和樣品 8
 2.1.1 儀器 8
 2.1.2 試劑和樣品 8
 2.2 實(shí)驗(yàn)準(zhǔn)備 8
 2.3 樣品預(yù)處理 8
 2.4 分離測(cè)定 9
 2.4.1 氣相色譜條件 9
3 結(jié)果與討論 10
 3.1 GC分離 10
 3.2 樣品分析 11
4 總結(jié)與展望 17
 4.1 總結(jié) 17
 4.2 展望 17
致謝 18
參考文獻(xiàn) 19

摘要：食品包裝材料聚乙烯中含有的有害物質(zhì)增塑劑（主要是鄰苯二甲酸酯類增塑劑）嚴(yán)重危害著人群的健康，會(huì)產(chǎn)生類雌激素效應(yīng)，“三致”效應(yīng)，生殖毒性、發(fā)育毒性以及其它毒性。用氣相色譜測(cè)定食品包裝材料聚乙烯中增塑劑，主要是5種鄰苯二甲酸酯類化合物（鄰苯二甲酸二甲酯（DMP）、鄰苯二甲酸二乙酯（DEP）、鄰苯二甲酸二丁酯（DBP）、鄰苯二甲酸二正辛酯（DOP）和鄰苯二甲酸二（2-乙基己基）酯（DEHP））。樣品用甲醇：乙醇（1：1）浸泡，超聲提取，蒸發(fā)濃縮至近干，用甲醇定容到15mL。進(jìn)行氣相色譜分析。氣相色譜回收率為89.46％-110.58％，精密度RSD為2.85％-4.51％，檢出限D(zhuǎn)MP、DEP、DBP、DOP和DEHP分別為2.0、1.8、2.6、3.2和3.1ng，這種方法具有樣品用量少，分離效果好，靈敏度、回收率高等優(yōu)點(diǎn)。

關(guān)鍵詞：聚乙烯；增塑劑；鄰苯二甲酸酯；氣相色譜 
Abstract：Polyethylene food packaging materials containing hazardous substances plasticizer (mainly phthalate plasticizer esters) seriously endanger healthy crowd will have estrogenic effect,"three to" effect, reproductive toxicity, developmental toxicity and other toxic.The method  for simultaneous determination of Plasticizer,mostly five kinds of phthalate esters,namely dimethyl phthalate,diethyl phthalate,di-n-butyl phthalate,di-n-octyl phthalate and di(2-ethylhexyl) phthalate in food-packaging bags by GC were developed.The preparation of sample have been compared.Finally,we choosed the best pretreatment method.The food-packaging bags were extracted with methanol:ethanol (1:1) immersion ultrasonic extraction and evaporation to nearly dry, with the volume of methanol to 15 mL.Processing by GC.Recoveries and relative standard deviation of the five phthalates by GC were 89.46％-110.58％ and 2.85％-4.51％, respectively.The detection limits:2.0 ng for DMP,1.8 ng for DEP,2.6 ng for DBP,3.2 ng for DOP and 3.1 ng for DEHP.The methods presented the advantages of high precision,high sensitivity, high recoveries,low consumption of sample and so on.

Keywords： Polyethylene;Plasticizer;Phthalic acid esters;Gas chromatography