With the increasingly severe public safety situation and the increase in terrorist attacks, drugs, easy-made drugs, toxic chemicals, dangerous explosives, etc. are increasingly harmful to the people, which also restricts China's economy, social stability, people's health, etc. Development. Between 2011 and 2015, the number of seized drugs nationwide increased by nearly five times, and the number of drug addicts was on the rise. As the drug problem became more and more serious, it was no longer urgent to strengthen drug control [1-3]. At present, the commonly used anti-drug equipment includes various drug detection technologies such as X-ray detection, mass spectrometry, Raman spectroscopy, ion mobility spectroscopy, neutron detection, etc. However, the technologies that can be used for on-site real-time detection are extremely scarce, seeking efficient and accurate on-site real-time detection Technology is urgent. The handheld drug detection instrument based on Raman spectroscopy technology can identify non-destructive, fast and accurate items on the spot and give information on the chemical composition of substances, which has received widespread attention from the Ministry of Public Security [1]. Application Analysis The current definition of drugs in China is mainly based on Article 2: "Drugs" refers to opium, heroin, methamphetamine (meth), maca, marijuana, cocaine, and other regulations that can be addicted by the state regulations. Addictive narcotic drugs and psychotropic drugs "[2]. At present, the definition of drugs in China is not clear, and there is no formal official drug catalog. There are two cases of current drugs: one is that new drugs are constantly emerging; the second is the lag of the law, that is, the large or small disconnect between the law and society. New drugs are constantly emerging, and our country cannot collect new drugs in a timely manner. The limitation of the definition of new drugs in criminal law will lead to controversy; and the harmfulness of new drugs has not been medically verified. The prosecution conditions, conviction and sentencing standards and the original Whether the drugs are consistent is still to be discussed [2,3]. Compared with the qualitative or quantitative testing in the laboratory, the front-line law enforcement personnel compare the qualitative or quantitative testing in the laboratory with rapid and efficient on-site testing as an important indicator. Rapid drug testing methods are also an important research direction. Common portable anti-drug equipment includes a drug inspection box, a drug detection system, a chemical identification and detection system for drugs / pre-manufactured chemicals, and a physical evidence storage box, which is used for on-site rapid detection of common drugs, psychotropic drugs, and pre-manufactured chemicals. The handheld Raman spectrometer can achieve quantitative and qualitative detection of substances. It has the advantages of high sensitivity, high accuracy, good stability, fast and convenient, non-contact non-destructive detection, etc. It can be used for the detection of the following aspects: 1) Used for border anti-narcotics testing, rapid detection of passing vehicles, personnel carrying suspected drugs, drug-making prodution products, dangerous chemicals, explosives, etc. 2) Used for rapid identification of dangerous chemicals, drugs and explosives in airports, railway stations, customs and other departments 3) It is used in the anti-narcotics departments of the armed police and public security to conduct rapid on-site and source screening of suspected persons, vehicles, target buildings and other drugs, easily manufactured drugs, and dangerous chemicals Handheld Raman spectrometer In 1928, Raman observed the inelastic scattering spectrum generated by the monochromatic light incident on the substance for the first time from the laboratory. The phenomenon that the frequency of this scattered light is different from the incident light is called Raman scattering. The Raman scattering effect is closely related to the molecular structure. It is a fingerprint spectrum that can characterize the molecular structure information. It can extract the data information of molecular vibration and rotation to further study the molecular structure analysis method. Common drugs have rich Raman fingerprints, so Raman spectroscopy has a good identification effect for most drugs. At present, the handheld Raman spectrometer has become a weapon for rapid drug detection. The "FinderEdge" series of hand-held Raman spectrometers independently developed by Beijing Zhuoli Hanguang Instrument Co., Ltd. has developed a detection instrument specifically for on-site law enforcement based on Raman spectroscopy technology as a carrier. The rapid identification of poison-making chemicals, explosives, explosive-produced chemicals, contraband, etc. provides a convenient, accurate and powerful means for rapid on-site detection. Technical advantages: rapid on-site screening, including suspected drugs such as solids, liquids, and powders. Non-destructive testing, which can identify suspected items through transparent and translucent packaging such as plastic and glass; One-touch portable operation, efficient and convenient; Support self-built database, cloud computing and big data management, control identification; Palm-type instrument, multiple detection methods (on-site, remote); Can support battery storage and AC charging, continuous power supply time is greater than 4h, easy to use on site; Based on the advantages of hand-held Raman spectrometer with rapid on-site identification, this time I chose toxic-acetone as the test substance, measured 2ml of acetone reagent and transparent glass bottle, and placed it in the liquid sample cell for detection. As shown: As can be seen from the figure, FinderEdge can detect that there is no false alarm in acetone, and the spectral peaks are clear and easy to identify. By conducting 20 repeated tests on it, no false alarms or false alarms occurred. The performance of the instrument is stable and the accuracy is high, which can meet the needs of rapid identification and investigation of drug control sites. in conclusion Drug control is a common responsibility of the whole society. Relevant national departments attach great importance to it. All departments of the country work together to continuously improve the level of drug control equipment. More drug testing instruments are equipped in key ports, high-speed bayonet, drug treatment centers and other places throughout the country. Public security organs can quickly identify, screen, and analyze suspected drugs at the scene of physical evidence to obtain the nature of drugs, types of precursor chemicals, and related drug manufacturing processes, which can greatly improve the efficiency of drug control. The FinderEdge handheld Raman spectrometer independently developed by Beijing Zhuoli Hanguang Instrument Co., Ltd. can quickly, accurately and efficiently detect dangerous chemicals such as drugs, drug-prone products, flammable and explosive, with high accuracy, good stability, and one-click The operation can meet the needs of anti-drug scene. The functions of molecular information collection, spectrum peak identification, and database comparison of handheld Raman spectrometers can achieve the purpose of rapid detection of dangerous goods, which is of great significance to the development of public safety and emergency response technology. Top Coat And Base Coat,Top Coat Nails,Matte Top Coat,Gel Top Coat GuangZhou CCO Cosmetic Co., Ltd , https://www.nailcocome.com
