经典腙作为指纹显影剂:实验有机化学的建议

IF 0.5 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Quimica Nova Pub Date : 2023-02-01 DOI:10.21577/0100-4042.20170964

N. Lima, B. Rosa, Tais Poletti, B. Moreira, Amanda Leitzke, K. Mariotti, N. Carreño, Cláudio Pereira

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引用次数: 0

摘要

经典腙作为指纹显影剂:一项实验性有机化学提案。手印粉末是法医从业者的重要工具，是大多数犯罪现场调查员的首选程序。新产品的开发对法医学至关重要。腙是由酮类或醛类与肼反应而成的化合物。由于这些化合物在有机合成中的通用性，这些反应在有机化学中被广泛研究。通过对这些反应的研究，我们了解了肼的亲核性，以及醛和酮的亲电性。目前的工作提出了一个实验有机化学的建议，旨在将这类经典有机物质在法医化学中的新应用，特别是作为潜在手印的显色剂，由于化合物颜色的变化，光谱范围从250到500纳米。用红外光谱、紫外-可见光谱和质谱对化合物进行了鉴定。玻璃表面的发展表明了这些化合物在日常生活中的潜在应用。

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AS CLÁSSICAS HIDRAZONAS COMO REVELADORES DE IMPRESSÕES DIGITAIS: UMA PROPOSTA DE QUÍMICA ORGÂNICA EXPERIMENTAL

CLASSIC HYDRAZONES AS FINGERMARK DEVELOPERS: AN EXPERIMENTAL ORGANIC CHEMISTRY PROPOSAL. Fingermark dusting powders are an important tool of forensic practitioners, being a first-choice process for most crime scene investigators. The development of new products is of utmost importance for forensic science. Hydrazones comprise compounds derived from ketones or aldehydes in reaction with hydrazines. These reactions are widely studied in organic chemistry because of the versatility of these compounds in organic synthesis. The study of these reactions leads to the understanding of the nucleophilicity of hydrazines, as well as the electrophilicity of aldehydes and ketones. The present work presents one proposal of experimental organic chemistry, aiming at a new application of this classic class of organic substances in forensic chemistry, specifically as a developer of latent fingermarks due to the variations of the color of the compounds, with spectra ranging in a range from 250 to 500 nm. These compounds were identified by Infrared Spectroscopy, Ultraviolet-Visible Spectroscopy and Mass Spectrometry. The development on glass surfaces demonstrated the potential application of these compounds in everyday life situations.

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来源期刊

Quimica Nova 化学-化学综合

CiteScore

1.60

自引率

12.50%

发文量

审稿时长

2-4 weeks

期刊介绍： Química Nova publishes in portuguese, spanish and english, original research articles, revisions, technical notes and articles about education in chemistry. All the manuscripts submitted to QN are evaluated by, at least, two reviewers (from Brazil and abroad) of recognized expertise in the field of chemistry involved in the manuscript. The Editorial Council can be eventually asked to review manuscripts. Editors are responsible for the final edition of QN.