EPA-106-E3S4-02-01

106

1,400 千元

2017/03/30

2017/12/31

游竟維

環檢所

羅仕麟

汎鍶科藝股份有限公司

環境監測及檢測

表面增強拉曼光譜、奈米薄膜結構、有機磷農藥、甲醛檢測

Surface Enhanced Raman Spectroscopy (SERS)，Nanostructrued thin film，Organophosphorus Pesticides，Formaldehyde detection

游竟維

03-5166658#520

jimyou@phansco.com

本計畫利用表面增強拉曼光譜技術，評估空氣中污染物現場檢測之可行性;本計畫以785 nm 手持式拉曼系統進行巴拉松及大利松有機磷農藥表面增強拉曼標準圖譜量測，巴拉松及大利松農藥分別可利用特徵峰1108 cm-1及608 cm-1進行檢量線建立，研究結果顯示，空氣中農藥採樣可利用甲醇做為吸收液，其回收率分別為60.0 %及79.5%。此外，本計畫也同時評估甲醛衍生劑於表面增強拉曼光譜法適用性，由於甲醛分子拉曼訊號微弱，必須檢測其與吸收反應劑之SERS光譜; 本計畫同時對DNPH (2，4－Dinitrophenylhydrazine)及AHMT (4-amino-3-hydrazino-5- mercapto-1,2,4-triazole)衍生物進行評估，利用環保署公告方法"NIEA A705.12C" 之空氣中甲醛的採樣架構，發現DNPH吸收液在SERS光譜具有強烈之螢光訊號，此訊號除遮蔽SERS基板本身在520 cm-1處之特徵峰外，在500 cm-1~1500 cm-1同時具螢光干擾;當甲醛與AHMT反應後，其產物MTT(6-mercapto-5-triazolo [4,3-b]-s-tetrazine)具有明顯SERS特徵峰，由研究結果顯示，利用其主要特徵峰1367-1375 cm-1建立檢量線，方法偵測極限為0.0032 mg/L，低於法規標準。

表面增強拉曼光譜、奈米薄膜結構、有機磷農藥、甲醛檢測

EPA-106-E3S4-02-01.pdf

4MB

期末報告

2018/2/1 上午 12:00:00

This project investigates the feasibility of environmental forensics using surface enhanced Raman spectroscopy (SERS). The SERS spectra of parathion and diazinon were measured at 785 nm by portable Raman system. The calibration curves of parathion and diazinon were characterized by the SERS peaks of 1108 cm-1and 608 cm-1, respectively. The result shows methanol can be used as absorbing solution for the sampling process and the recoveries were found to be 60.0 % for parathion and 79.5% for diazinon, respectively. For the detection of formaldehyde (HCHO) in environment, two kinds of chromogenic agents DNPH (2，4－Dinitrophenylhydrazine) and AHMT (4-amino -3-hydrazino-5- mercapto-1,2,4-triazole) were investigated. Due to the huge fluorescent of the SERS spectrum within the Raman shift range of 500 cm-1 to 1500 cm-1 , the chromogenic agent of DNPH is not suitable as the absorbing solution for HCHO. However, one of product MTT (6-mercapto-5-triazolo [4,3-b]-s-tetrazine) can be measured its SERS peak at about 1367-1375 cm-1 for the quantification of HCHO after the derivative reaction with AHMT at room temperature. With the sampling method of "NIEA A705.12C", the result shows the detection limit is 0.0032 mg/L for HCHO using AHMT as the absorbing solution.

Surface Enhanced Raman Spectroscopy (SERS)，Nanostructrued thin film，Organophosphorus Pesticides，Formaldehyde detection