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題 名 | 以近紅外線光譜儀偵測聚苯乙烯盛裝水與酒精於儲藏期間釋出之揮發性成分=Detection of Volatile Components Diffused from High Impact Polystyrene Load with Water and Alcohol by NIR |
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作 者 | 陳玉舜; 顏裕鴻; 賴倩因; 許聖平; | 書刊名 | 弘光學報 |
卷 期 | 36 2000.10[民89.10] |
頁 次 | 頁217-246 |
分類號 | 346.8432 |
關鍵詞 | 塑膠容器; 揮發性成分; 近紅外線光譜儀; Plastic materials; Volatile compounds; NIRS; |
語 文 | 中文(Chinese) |
中文摘要 | 各種塑膠材質在加工成型過程中,所殘留的單體、溶劑和寡聚合體等揮發性成分 ,在進行食品包裝貯存期間以及包裝容器盛裝熱食時會遷移至食品中,造成嚴重的安全問題 。本研究乃探討以近紅外線光譜儀( Near Infrared Spectroscopy, NIRS )檢測耐衝擊性 聚苯乙烯( High Impact Polystyrene, HIPS )塑膠容器盛裝水與酒精於加熱與貯存過程 中揮發性成分溶出量之可行性,利用兩種不同模擬食品系統(水、15% 酒精),以不同加熱 溫度 50 ℃、70 ℃及 90 ℃分別加熱 5、10、 20 及 30 分鐘與未加熱之控制組, 儲存 1 至 6 個月後,定期取出經上部空隙自動取樣及氣相層析儀( HS-GC )進行揮發性成分分析 及 NIRS 掃瞄分析,並建立塑膠容器盛裝模擬食品所釋出之揮發性成分定量用之檢量線與其 預測能力之評估。結果顯示,聚苯乙烯盛裝水時,以波長 6 nm 為間距運算、二次微分處理 及 Stepwise 的迴歸方法所得檢量線的標準偏差( Standard Error of Calibration, SEC )最小,其值為 0.1221 及相關性 R �斑怜炕A其值為 0.9174,而檢量線的預測能力,即相 關係數( Correlation Coefficient, r )可達 0.961;檢量線的原始分析數據之偏差值( Standard Deviation, S.D. )對預測樣品之偏差值( Standard Error of Performance, SEP )的比值, RPD ( The ratio of the S.D of the original data to the SEP )為 4.38,達到 "good" 的程度。 在聚苯乙烯盛裝 15% 酒精時,以波長 8 nm 為間距運算、二 次微分處理及 Stepwise 的迴歸方法所得檢量線的 SEC 最小為 0.6439 及 R �斑怜狀� 0.9096,而檢量線的預測能力 r 值達 0.983。 故應可利用此法來偵測聚苯乙烯在盛裝水與 酒精中釋出之揮發性成分。 |
英文摘要 | Volatile compounds such as residual mononer, solvent and oligomer from various kinds of plastic materials have caused severe security problems during food packaging storage and transportation. This study focuses on the possibility of using NIRS in detecting volatile compounds for food containing plastic vessels during heating and storage. Two different food models (water, 15% alcohol) which are packed with high impact polystyrene is used. The volatile compounds from these models heated at different temperature (50 ℃, 70 ℃, 90 ℃ ) and time (5,10,20,30minutes) with no heat of store one to six months are analyzed by the headspace gas chromatography (HS-GC) detection and NIRS scan analysis. The above data are then processed with NIRS statistical software analyses to establish the calibration curves and their prediction abilities are examined. Results showed the calibration of wavelengths used in the calculation are every 6 nm interval, second derivative treatment and stepwise by NIR for high impact polystyrene (HIPS) load with water from different heat treatment and storage time, it can get less standard error of calibration (S.D), S.D was 0.1221 and correlation value (R �� ) was 0.9174, correlation coefficient (r) of calibration was 0.961. The RPD [ratio of the S.D of the original data to the SEP (standard error of performance)] was 4.38, it's good. The calibration of wavelengths used in the calculation are every 8 nm interval, second derivative treatment and stepwise by NIR for high impact polystyrene load with 15% alcohol from different heat treatment and storage time, it can get less S.D. (0.6439) and R �� value (0.9096) and r of calibration was 0.983. |
本系統中英文摘要資訊取自各篇刊載內容。