本文選題：法庭科學(xué) + 紅色圓珠筆油墨��； 參考：《首都師范大學(xué)》2007年碩士論文

【摘要】： 在法庭鑒定和實(shí)際的案件偵破工作中，文件簽字的真?zhèn)闻c書寫時間的鑒定是很重要的內(nèi)容之一。但是，由于油墨組成成分的復(fù)雜性及其測定的干擾性，可疑文件與墨水書寫時間的鑒定仍然是當(dāng)前法庭科學(xué)的難題之一。因此對筆中油墨種類鑒別的研究有其重要的意義，，本論文分六部分對紅色圓珠筆油墨進(jìn)行研究。 第一章介紹了油墨的分析、鑒定研究的進(jìn)展，綜述了近年來國內(nèi)外可疑文件與墨水書寫時間鑒定的發(fā)展與應(yīng)用，所采用方法包括光譜法、色譜法、質(zhì)譜法、色質(zhì)聯(lián)用技術(shù)等。 第二章簡述了紅色圓珠筆油墨的主要組分及采用的紫外可見光譜分析，根據(jù)紫外可見光譜圖將其分為三類。 第三章利用電化學(xué)方法對紅色圓珠筆油墨提取液進(jìn)行分析，考察了底液及提取量的選擇，根據(jù)極譜圖將其分為四類。 第四章通過薄層色譜法對紅色圓珠筆油墨提取液進(jìn)行分析，根據(jù)油墨中不同的化學(xué)組分在薄層色譜測定中產(chǎn)生的斑點(diǎn)的個數(shù)、顏色以及比移值等的不同將紅色圓珠筆分為八類，并討論了展開劑的選擇及影響展開結(jié)果的因素。 第五章用高效液相色譜法，選擇了適當(dāng)?shù)奶崛┖土鲃酉鄺l件，研究了重現(xiàn)性、檢出限和紙張的影響，根據(jù)主要成分的色譜峰的保留時間對紅色圓珠筆進(jìn)行了再次分類，HPLC進(jìn)一步區(qū)分了TLC不能區(qū)分的油墨。 第六章采用液相色譜-質(zhì)譜對紅色圓珠筆油墨提取液進(jìn)行了分析，并剖析了TLC中的未知斑點(diǎn)和HPLC中的未知峰。這為紅色圓珠筆的老化研究及書寫時間鑒定打下了良好基礎(chǔ)。
[Abstract]:In forensic identification and actual case detection, the authenticity of the document signature and the identification of the writing time are one of the most important contents. However, because of the complexity of the composition of the ink and the interference of the determination, the identification of the writing time of the suspicious documents and ink is still one of the difficult problems in the current forensic science. The research of class identification is of great significance. This paper is divided into six parts to study red ballpoint pen ink.
The first chapter introduces the analysis of ink, the progress of identification and research, and summarizes the development and application of the identification of suspicious documents and ink writing time at home and abroad in recent years. The methods used include spectroscopy, chromatography, mass spectrometry, and color and chromatograph.
The second chapter briefly describes the main components of the red ballpoint pen ink and the ultraviolet visible spectrum analysis, and divides them into three categories according to the ultraviolet visible spectrum.
In the third chapter, the extraction method of red ballpoint pen ink is analyzed by electrochemical method, and the choice of bottom liquid and extraction quantity is investigated. According to the polarographic chart, it is divided into four categories.
The fourth chapter analyzes the ink extraction liquid of red ball pen by thin layer chromatography. According to the number of spots, color and specific shift value of different chemical components in the thin layer chromatography, the red ballpoint pen is divided into eight categories, and the selection of the expansion agent and the factors affecting the expansion result are discussed.
In the fifth chapter, the appropriate extraction and mobile phase conditions were selected by high performance liquid chromatography (HPLC). The reproducibility, detection limit and the influence of paper were studied. The red ball pen was reclassified according to the retention time of the chromatographic peaks of the main components. HPLC further distinguished the inks indistinguishable from the TLC.
In the sixth chapter, the liquid chromatography mass spectrometry (liquid chromatography mass spectrometry) was used to analyze the ink extraction of the red ball pen, and the unknown spots in the TLC and the unknown peaks in the HPLC were analyzed, which laid a good foundation for the aging study and the writing time identification of the red ball point pen.
【學(xué)位授予單位】：首都師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2007
【分類號】：D918.2

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