Can the blood alcohol level be detected in a chromatograph for judicial identification? -Huaqiang Electronic Network

Some customers may ask:

How is gas chromatography used in forensic identification?

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Today, we will explain this issue. With the implementation of the new traffic law, the detection of blood alcohol content in drivers has become more frequent. The legal and quantitative determination of blood alcohol content using headspace gas chromatography is the only method accepted for judicial identification. Our company's specialized instrument comes with a real headspace sampler, eliminating complex pre-processing steps, offering high analysis efficiency, advanced detection methods, reasonable configuration, accurate results, and user-friendly operation. It is suitable for all levels of public security departments, hospitals, and forensic identification centers.

Scope of Analysis

The system supports qualitative analysis of blood, urine, ethanol, methanol, n-propanol, acetaldehyde, acetone, isopropanol, n-butanol, isoamyl alcohol, and quantitative analysis of ethanol, methanol, and n-propanol. The alcohol content testing in blood follows the analytical requirements and conditions specified in the public safety industry standard GA/T 842-2009 of the People’s Republic of China, enabling fast and accurate analysis of alcohol levels in human blood. This meets the needs of traffic police departments nationwide.

Configuration

Our after-sales technicians provide free installation, commissioning, and professional training for lab personnel, implementing a "turnkey" project. The entire system is guaranteed for one year and maintained for life.

• Gas Chromatograph
• FID + packed column injection system + capillary sampling system
• Automatic headspace samplers: HS-12A, HS-20A
• Dedicated columns
• Special sealing pliers, sample preparation accessories, and consumables
• 100 sets of headspace vials, caps, and mats
• Chromatography workstation
• High-purity nitrogen, hydrogen, and air generators
• Internal standard
• Computer and printer

Main Features

This instrument uses microcomputer control, full keyboard operation, and a 32-bit digital display. It includes self-diagnosis functionality, continuously monitoring the instrument’s status. If a fault occurs, it immediately displays the error message and provides troubleshooting guidance. It supports detector range and decay time programming, as well as automatic valve switching and dual signal analysis. It also features multiple protection functions such as TCD gas protection, over-temperature protection, and FPD leakage protection. Four different analysis methods can be stored and recalled at any time. It supports TCD, FID, ECD, FPD, and TSD detectors, with optional packed column and split/splitless capillary injectors.

Performance Characteristics

This is a newly developed gas chromatograph based on Varian’s technology. Key components are imported from the U.S., offering an elegant design and high-quality performance. It is widely used in petroleum, chemical, environmental protection, medicine, power, mining, research, and education sectors.

Technical Parameters

• TCD detection limit ≤ 9×10⁻⁶ mg/ml (n-C16 in Hâ‚‚)
• FID detection limit ≤ 8×10⁻¹² g/s (n-C16)
• ECD minimum detection amount ≤ 0.1 Pg (r-666)
• FPD sensitivity: [P] ≤ 1×10⁻¹² g/sec (tributyl phosphate), [S] ≤ 1×10⁻¹⁰ g/sec (methyl parathion)
• TSD sensitivity: [N] ≤ 1×10⁻¹³ g/sec (azobenzene), [P] ≤ 1×10⁻¹⁴ g/sec
• Temperature control: Column oven: 25°C to 400°C
• Injector oven: 25°C to 400°C
• Detector oven: 25°C to 400°C
• Power supply: AC 220V±10%, 50Hz
• Current: 15A
• Power consumption: 1650W
• Dimensions: Not specified
• Net weight: ~38 kg

Full Service

Before purchasing, we assist you in fully understanding the instrument's features and offer comprehensive consultation for selection. Based on your needs, we can provide additional equipment like chromatography workstations, gas generators, standards, and columns. After purchase, our professional technicians will visit your site for free installation, startup, and commissioning. We also supply spare parts and consumables long-term.