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一次性餐盒材料中全氟辛酸和全氟辛烷磺酸瀝出性研究
摘要: 利用高效液相色譜-串聯(lián)質(zhì)譜檢測方法對一次性餐盒材料中可瀝出性全氟辛酸(PFOA)和全氟辛烷磺酸(PFPS)進行了研究.分別選取水、3%乙酸(W/W)、15%乙醇(V/V)和正己烷4種浸取液模擬餐盒材料在使用過程中可能接觸到的水性、酸性、酒精類和油脂類條件.材料經(jīng)4種溶液浸提后,浸取液用固相萃取凈化和濃縮,目標分析物PFOA和PFOS采用內(nèi)標法進行定量.研究表明,一次性餐盒材料在模擬條件下中有以PFOA為主的傘氟類化合物從材料中瀝出,其中酸性環(huán)境對PFOA的浸取率最高(2296 ng·m~(-2)), 為其它3種方法的82.8倍;4種浸提條件下PFPS的瀝出率都比較低,濃度儀為0.7 ng·m~(-2)-5.4 ng·m~(-2). Abstract: The leachability of perfluorooctanie acid (PFOA) and perfluorooctanic sulfonic (PFOS) from disposable luneh boxes materials under 4 food stimulant conditions was investigated with the HPLC/MS/MS method, using MPFOA and MPFOS as the internal standard, respectively. Four kinds of solvents were selected to simulate the exposure of food to the plastic materials, which were distilled water, 3% acetic acid (W/W), 15% ethanol (V/V) and n-hexane. The two compounds in the stimulant solvents were extracted using the Supelclean LC-18 SPE (3ec) cartridges. It was indieated that foodstuff can be very likely contaminated by perfluorinated compounds during the usage of disposable lunch boxes, and that mueh higher level of PFOA (about2296 ng· m~(-2))was deteeted in the stimulant solvent of 3% acetic acid after contact with the disposable lunch box for 4 h. Generally, PFOS can hardly be leached out under the four conditions. 作 者: 潘媛媛 史亞利 王亞(韋/華) 蔡亞岐 PAN Yuan-yuan SHI Ya-li WANG Ya-wei CAI Ya-qi 作者單位: 中國科學院生態(tài)環(huán)境研究中心環(huán)境化學與生態(tài)毒理學國家重點實驗室,北京,100085 期 刊: 環(huán)境化學 ISTICPKU Journal: ENVIRONMENTAL CHEMISTRY 年,卷(期): 2009, 28(6) 分類號: X13 關(guān)鍵詞: 全氟辛酸 全氟辛烷磺酸 一次性餐盒 瀝出. Keywords: perfluorooctanic acid perfluorooctanie sulfonic disposable lunch box leachablity.【一次性餐盒材料中全氟辛酸和全氟辛烷磺酸瀝出性研究】相關(guān)文章:
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