環境奈米評析與綠色化學檢測技術研究(2/3)-發展拉曼光譜技術應用於環境水污染物檢測
| 中文摘要 | 本年度的計畫目標為以拉曼光譜技術檢測環境水污染物。所選定的化合物為上一年度計畫所選定的氰化物，以及六價鉻化合物。其目標有三項：（一）開發混摻式內標定量法之定量方式、（二）開發真實水樣前處理方式與定量流程、（三）區分水中三價鉻離子(Cr3+)與六價鉻離子(Cr6+)。 於第一項工作上，我們推導出內標物與待測物間的拉曼訊號強度比隨待測物濃度變化的線性關係。此線性關係可使用於決定未知的水體六價鉻離子濃度。從而開發出混摻式內標定量法。於第二項工作上，我們開發了環境水體氰化物的分析流程；而使用氰離子的等溫吸附模型公式於標準添加法中，以該非線性公式擬合實驗數據來決定出氰離子的未知濃度。於第三項工作上，我們確定了水體三價鉻離子無法產生可辨明的表面增強拉曼訊號，並且開發了一個流程來檢測水體三價鉻離子：先以螯合劑與三價鉻離子產生螯合物，再用表面增強拉曼技術來檢測此螯合物。此技術的最低三價鉻離子檢測濃度小於0.05 mg/L。 | ||
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| 中文關鍵字 | 拉曼光譜、氰化物、六價鉻 | ||
基本資訊
| 專案計畫編號 | EPA-105-E3S4-02-04 | 經費年度 | 105 | 計畫經費 | 2000 千元 |
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| 專案開始日期 | 2016/03/30 | 專案結束日期 | 2016/12/31 | 專案主持人 | 王俊凱 |
| 主辦單位 | 環檢所 | 承辦人 | 羅仕麟 | 執行單位 | 中央研究院原子與分子科學研究所 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 105環檢所期末報告定稿本(1612151420)-列印版.pdf | 2MB |
Development of Raman scattering spectroscopy in environmental water pollutant test
| 英文摘要 | The goal of this project is to detect pollutants in real water with surface-enhanced Raman scattering (SERS). The pollutants are cyanide and chromium (VI) that were selected for last year’s project. The project targets are three folds: (1) developing new mix-type internal standard method for chromium (VI); (2) developing pretreatment procedure and quantitative analysis method for cyanide in real water samples; (3) developing method to differentiate between chromium (III) and chromium (VI) in water. For the first target, we have derived a linear relation between the ratio of the SERS signal of internal standard compound between the samples with and without chromium (VI). With this linear formula, we have determined the concentration of chromium (VI) with great accuracy, thus developing a mix-type internal standard method. For the second target, we have developed a sample pretreatment procedure for real water samples, have used the concentration curve of cyanide in water to determine the sample concentration directly, and finally have extracted the cyanide concentration by fitting the obtained data obtained from standard addition method to the nonlinear concentration formula of cyanide. For the third target, we have proved that the SERS signal of chromium (III) in water is non-recognizable and have developed a SERS method to detect it: A chelating agent is first used to form chelant with chromium (III) and the SERS method then detects the chelant. The limit-of-dection concentration of this method is below 0.05 mg/L. | ||
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| 英文關鍵字 | Raman scattering spectroscopy, cyanide, chromium-VI | ||