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Guangzhou Xiaofen Instrument
Analysis and detection of residual ethylene oxide (EO) using standard gas chromatography
NegotiableUpdate on 08/08
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Overview
Introduction: Ethylene oxide (EO, C2H4O) is a colorless and flammable gas at room temperature and pressure, and a colorless and easily flowing liquid at low temperatures. There is a smell of ether and a pungent odor at high concentrations. It is a broad-spectrum and highly effective gas disinfectant with mild anesthetic properties. answer
Product Details
Introduction to Ethylene Oxide
Ethylene oxide (EO, C2H4O) is a colorless and flammable gas at room temperature and pressure, and a colorless and easily flowing liquid at low temperatures. There is a smell of ether and a pungent odor at high concentrations. It is a broad-spectrum and highly effective gas disinfectant with mild anesthetic properties. It has strong penetration power for disinfecting items, can reach deep into the item, and can kill several pathogenic microorganisms, including bacterial reproductive bodies, spores, viruses, and fungi. Both gases and liquids have strong bactericidal effects, with gases having a stronger effect, so they are often used.
Ethylene oxide is widely used in medical disinfection and industrial sterilization. Commonly used for gas fumigation disinfection of food, textiles, and other materials that cannot be disinfected by other methods, such as leather, cotton products, synthetic fabrics, precision instruments, biological products, paper, books, documents, certain drugs, rubber products, etc.
Ethylene oxide is a central nervous system inhibitor, stimulant, and plasma toxin, with higher toxicity to humans and animals than carbon tetrachloride and chloroform, and similar to ammonia. Acute poisoning: The patient experiences severe pulsatile headache, dizziness, nausea and vomiting, tearing, coughing, chest tightness, and difficulty breathing; Severe cases may experience muscle tremors, speech disorders, ataxia, sweating, confusion, and even coma. Myocardial damage and liver dysfunction can also be seen. After rescue and recovery, there may be temporary mental disorders, delayed functional loss of voice, or central hemiplegia. Skin contact can cause rapid redness and swelling, followed by blistering after several hours. Repeated contact can lead to sensitization. Liquid splashing into the eyes can cause corneal burns. Chronic effects: Long term exposure to small amounts can lead to symptoms of neurasthenia syndrome and autonomic nervous system dysfunction. Ethylene oxide is an alkylating agent and has the potential to cause cancer.
Refer to the following standards
GB 18279-2000 Confirmation and Routine Control of Ethylene Oxide Sterilization for Medical Devices
GB/T 16886.7-2001 Biological Evaluation of Medical Devices (Part 7) Residual Ethylene Oxide Sterilization
GB 11721-89 Hygienic standard for epoxyethane in workshop air
GB 13690-92 Classification and labeling of commonly used hazardous chemicals
The GC 7900 gas chromatograph, with mature and stable technology, is mainly used for analysis and testing in the fields of petroleum extraction and refining, petrochemicals, fine chemicals, food safety, environmental protection, electronic high-purity gas industry, research institutes, quality inspection, safety supervision, public security forensics, and national security.
Performance characteristics of standard gas chromatography for residual ethylene oxide (EO) analysis and detection
High precision gas flow control system (AFC)
Completely abandoning traditional pointer pressure gauges, adopting EPC technology for digital control, automation level and overall performance approaching international top brands
High precision gas flow control, ensuring the accuracy of GC analysis, ensuring daily analysis efficiency, EPC control accuracy of 0.01psi
● Achieved self-protection against air circuit faults, automatic ignition and shutdown, automatic opening of the air circuit, and achieved one key start
● Multiple control combination mode operation, fully automatic adjustment of pressure and flow, control and display, operable energy-saving mode
● Unique design of color widescreen and touch buttons
Adopting a 7-inch industrial color LCD screen design, it displays more comprehensive information and has a more reasonable interface operation
● Equipped with two operating systems in Chinese and English to meet different user needs
Adopting a resistive touch screen, it has a good tactile feel, is durable, and seamlessly connects the screen and software through dual operation
Leading structural design
Modular structural design, easy to upgrade, and can be equipped with various high-performance detectors such as FID, TCD, ECD, FPD, and NPD to meet the analysis needs of complex samples
Advanced injector design, unique inner liner structure, and special processing technology ensure zero adsorption of samples
● Compatible with multiple injection methods such as headspace sampler, thermal analyzer, liquid automatic sampler, easily capable of analyzing various sample types
Design a timed self starting program that can easily complete laboratory online analysis of gas and liquid samples
A highly user-friendly software operating system
Equipped with advanced 10/100M adaptive Ethernet communication interface and built-in IP protocol stack, it easily forms a local area network to achieve long-distance transmission, remote control, and remote diagnosis
● With a simple interface and powerful data processing capabilities, it achieves rigorous and efficient automation of GC analysis and management work
Equipped with IBrainChrom workstation, it can support multiple chromatographs (253 units) working simultaneously to achieve data processing and reverse control
● It has complete audit tracking, user permission management, electronic signature and other functions to ensure that data and documents comply with GMP management requirements
The built-in Modbus/TCP server in the IBrainChromium workstation allows for easy integration of analysis results into DCS (Distributed Control System)
3 independent connection threads are designed internally to connect to local processing, unit supervisors, and higher-level supervisory departments, facilitating real-time monitoring of instrument operation and data analysis by unit supervisors and higher-level supervisory departments
Specification
● Interface display: 7-inch industrial color LCD screen
Temperature controlled area: 8 channels
Temperature control range: 5 ℃ to 450 ℃ above room temperature, increment: 1 ℃, accuracy: ± 0.01 ℃
● Program heating order: 16 orders
● Lift rate: 0.1-40 ℃/min (ordinary type); 0.1-60 ℃/min (high-speed type)
External events: 6 channels
● Sample injector types: packed column injection, capillary injection
Number of detectors: 3 (maximum); FID, TCD, ECD, FPD, and NPD are optional
● Air path control: AFC mode
AFC working mode: 2 types; Constant current mode, constant voltage mode
AFC range: pressure: 0-0.6MPa; Flow rate 0-100mL/min or 0-500mL/min (air)
● Pressure sensor:
Accuracy:<± 2% of full scale
Reproducibility:<± 0.05 KPa
Temperature coefficient:<± 0.01 KPa/° C
● Flow sensor:
Accuracy:<± 5% of full scale
Reproducibility:<± 0.5% (full scale)
Range: 0-500mL/min
● Start injection: manual or automatic selection
● Communication interface: Ethernet
Power supply: 220V ± 10%, 50Hz; 2500W (maximum)
● Volume: a × b × cm
Weight: 50kg (approximately)
Technical specifications of detector
Detection limit: Mt ≤ 3 × 10-12g/s (n-hexadecane-isooctane solution);
Noise: ≤ 5 × 10-14A
Drift: ≤ 1 × 10-13A/30min
● Linear range: ≥ 106TCD
Sensitivity S ≥ 3500mV • ml/mg (conventional) 5000mV • ml/mg (highly sensitive) (benzene toluene solution)
Noise: ≤ 10 μ V
Baseline drift ≤ 30 μ V/30min
● Linear range: ≥ 104ECD
Detection limit: ≤ 1 × 10-14g/s
Noise: ≤ 0.03mV
Baseline drift: ≤ 0.2mV/30min
● Linear range: ≥ 103
● Radioactive source: 63NiFPD
Detection limit: (S) ≤ 5 × 10-11g/s, (P) ≤ 1 × 10-12g/s;
Noise: ≤ 0.03mV
Baseline drift: ≤ 0.2mV/30min
● Linear range: ≥ 103 (S), 102 (P)
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