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A new Raman system design is presented that expands the applicability of Raman to See Through diffusely scattering media such as opaque packaging materials, as well as to measure the Raman spectrum and identify thermolabile, photolabile, or heterogeneous samples.

The suitability and potential of Raman spectroscopy in forensics is widely known by forensic specialists who use it in the laboratory to identify a wide variety of compounds including explosives, drugs, paints, textile fibers and inks. However, the use of laboratory-grade Raman outside the laboratory, such as for in‐situ analysis at a crime scene, was something thought possible only in forensic‐fiction until just a few years ago. Fortunately, modern portable Raman spectrometers are commercially available, and their instrumental features are comparable to Raman lab‐ spectrometers. To prove this, some extraordinarily demanding and challenging applications, in which an in‐situ standoff identification of samples might be advisable, were tested.

Law enforcement personnel, laboratory technicians, crime scene investigators and many others face a significant challenge for identification of materials in a forensic investigation.Traditionally, technicians used multiple forms of identification in order to collect results from various forms of forensic samples. Although certain technologies are ideal for precise laboratory identification, many technologies, such as Raman spectroscopy, can be successfully used for identification of multiple forensic sample types either directly in the field or in the lab. Raman spectroscopy is classified as a Category A analytical method by the Scientific Working Group for the Analysis of Seized Drugs (SWGDRUG; Version 7.1, 2016).

The TacticID®-1064 ST is a 1064 nm handheld Raman system designed for law enforcement officials, first responders, and customs and border protection officers for rapid field identification of illicit substances such as narcotics, explosives, and other suspicious materials. The TacticID-1064 ST is specially designed with see-through Raman functionality to measure materials through both transparent and opaque containers. These through-barrier measurements remove the need for active sampling of potentially dangerous compounds such as fentanyl, leading to safer operations and reduced wait time for clear results.

The water content of explosive pellets is determined according to Karl Fischer after extraction with methanol.

Determination of chlorite, chlorate, and perchlorate in explosion residue using anion chromatography with conductivity and MS detection in tandem.

Identification of unknown materials in the field can be a complicated affair, especially in critical situations, where speed, safety, and ease-of-operation are essential. Mira DS, Metrohm Raman’s handheld Raman analyzer, and the intelligent Universal Attachment (iUA) give the user automated Content ID capabilities. Content ID achieves through container identification of unknown materials quickly, easily, and safely.

TacticID-1064 ST is a handheld Raman device that can identify materials through paper, plastic, glass, and multilayer packaging, reducing exposure risks and eliminating the need to open containers.

Determination of chlorate, nitrate, and perchlorate in firecracker powder using anion chromatography with conductivity detection after chemical suppression.

Determination of chloride, nitrite, cyanate, azide, nitrate, chlorate, sulfate, thiocyanate, thiosulfate, and perchlorate in an extract of explosives using anion chromatography with conductivity detection after chemical suppression.

Forensic institutes examine terrorist attacks and warfare agents via trace detection analysis of the used explosives and their residuals. Of particular importance is the acquisition of «chemical fingerprints» for criminal investigation departments and governmental security agencies. Institutes for public health and environmental protection analyze such compounds that can contaminate the underlying soil and infiltrate ground water. Forensic investigation with ion chromatography (IC) using suppressed conductivity detection allows a sensitive and robust determination of anionic contaminants such as chlorate, thiosulfate, thiocyanate, and perchlorate next to the common inorganic anions over a broad concentration range.

Today's Raman instrumentation is faster, more rugged, and less expensive than in the past and the advances in component miniaturization have led to the design of portable devices with extremely high performance designed for field-based investigations. This study focuses on the use of handheld Raman spectroscopy for the characterization and identification of samples encountered in various application areas related to forensic science.

Patented STRaman technology is a new Raman technique that can identify chemical species nondestructively beneath diffusely scattering packaging material such as plastics or tablet coatings.

Allowing non-destructive chemical identification through opaque materials, award-winning STRam represents an evolution in Raman technology.

Metrohm Raman presents a unique handheld materials identification system designed to meet the needs of defense and security professionals. Meet Mira DS, the most adaptable Raman analyzer available today. Mira DS was developed directly in response to requests from first responders in the field for a small, rugged, automated materials identification system that ensures the safety of the user in any situation.

A person suspected of possessing a narcotic can be charged with a crime only after the identity of the illicit substance is confirmed. This confirmation is typically provided by analytical chemists in forensic laboratories and requires highly technical separation and detection methods. Unfortunately, such labs often have deep caseloads that lead to delays in testing. Handheld Raman analyzers bring the reliability and accuracy of lab analysis to first responders in the field, allowing for rapid and accurate identification of street drugs with a white powder appearance. With such tools, demand for forensic analysis can be reduced and enforcement agencies can enforce drug policies with greater safety, speed, and precision.

Handheld Raman is ever evolving. The combination of large libraries, a compact and easy-to-use system, and predictive Hazmat software make MIRA DS a powerful tool for defense and security professionals. Identify on-site materials, get hazard information, and make quick decisions about response to dangerous situations.

Trong White Paper này, bạn sẽ tìm hiểu về MIRA XTR DS – hệ thống Raman cầm tay nhỏ nhất, thông minh nhất, linh hoạt nhất với các thư viện lớn nhất hiện có trên thị trường! MIRA XTR DS có tất cả các lợi ích định tính Raman 785 nm: kích thước nhỏ gọn, công suất laser thấp, bảo quản mẫu, tuổi thọ pin dài... giờ đây có khả năng loại bỏ huỳnh quang. Ngoài ra, độ nhạy và độ phân giải được cải thiện so với các hệ thống 1064 nm. Điều này mở ra những khả năng mới cho Raman 785 nm, bao gồm các vật liệu có màu đậm, tá dược thông thường, vật liệu bất hợp pháp, v.v.

OMNIS Client/Server nâng cao hiệu suất kinh doanh nhờ khả năng quản lý máy chủ linh hoạt, giúp cắt giảm chi phí thông qua giảm phần cứng, tiêu thụ năng lượng và bảo trì tại nhiều địa điểm.