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Li Y, Liu X, Zhang G, Wang R, Yue R, Liao G, Sun Z, Liu Y. Rapid and selective on-site detection of triacetone triperoxide based on visual colorimetric method. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198221117409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this work, a visual colorimetric method for the rapid and selective detection of triacetone triperoxide is reported. This visual colorimetric method is based on the reaction between potassium titanyl oxalate and hydrogen peroxide (H2O2) released from triacetone triperoxide degradation. Potassium titanyl oxalate can selectively react with H2O2 to form peroxo-titanic acid (an orange complex), enabling the colorimetric detection of triacetone triperoxide. Based on the theory that triacetone triperoxide produces hydrogen peroxide under acidic conditions, acid types, acid concentration, response time, visual limit of detection, and reactants ratio are systematically studied simultaneously for this colorimetric method. Under sulfuric acid concentration is 60%, the proposed method can almost detect triacetone triperoxide instantly, and the color of the solution reaches the maximum within 1 min and remains stable with a visual limit of detection as low as 3.0 × 10−5 mol/L. Interference experiments were carried out on other kinds of explosives (hexamethylene triperoxide diamine, trinitrotoluene, etc.). The use of colorimetric card brings great convenience to the rapid, qualitative, and semi-quantitative on-site detection of triacetone triperoxide. Because of its rapidity, high sensitivity, simplicity, and selectivity, the proposed visual colorimetric method can serve as a valuable and promising reference for triacetone triperoxide’s rapid, qualitative on-site detection.
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Affiliation(s)
- Yonggang Li
- School of Investigation, People’s Public Security University of China, Beijing, China
| | - Xingsheng Liu
- School of Investigation, People’s Public Security University of China, Beijing, China
| | - Guannan Zhang
- Institute of Forensic Science, Ministry of Public Security, Beijing, China
| | - Ruihua Wang
- Institute of Forensic Science, Ministry of Public Security, Beijing, China
| | - Ruimin Yue
- Shenxian First High School, Liaocheng, China
| | - Guangfu Liao
- Engineering Research Center of NanoGeomaterials of Ministry of Education, China University of Geosciences, Wuhan, China
| | - Zhenwen Sun
- Institute of Forensic Science, Ministry of Public Security, Beijing, China
| | - Yao Liu
- Institute of Forensic Science, Ministry of Public Security, Beijing, China
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A Quinoxaline-Naphthaldehyde Conjugate for Colorimetric Determination of Copper Ion. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27092908. [PMID: 35566259 PMCID: PMC9105850 DOI: 10.3390/molecules27092908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/20/2022] [Accepted: 04/28/2022] [Indexed: 02/01/2023]
Abstract
This work facilitates detection of bivalent copper ion by a simple Schiff base probe QNH based on a quinoxaline−naphthaldehyde framework. The detailed study in absorption spectroscopy and theoretical aspects and crystal study of the probe and probe−copper complex has been discussed. The detection limit of the probe in the presence of Cu2+ is 0.45 µM in HEPES−buffer/acetonitrile (3/7, v/v) medium for absorption study. The reversibility of the probe−copper complex has been investigated by EDTA. The selective visual detection of copper has been established also in gel form.
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