ChemproX Flashcards
What technology does chemproX use?
Ion mobility spectrometry
IMS
What principle does the ChemProX use for chemical detection?
Ion Mobility Spectrometry (IMS)
IMS is a technique that separates ions based on their mobility in a gas under an electric field.
How does the ChemProX ionize chemicals?
It uses a non-radioactive ionization source to charge molecules
Non-radioactive ionization sources are safer and more portable for field applications.
How are ions separated in the ChemProX IMS system?
Ions drift through a gas-filled tube, and their speed is measured based on size and shape
The drift time of ions is influenced by their charge and mass.
How does the ChemProX identify chemicals?
It compares ion drift times to a built-in database of known substances
This database allows for rapid identification of various chemicals.
What substances can the ChemProX detect?
Chemical warfare agents (CWAs), toxic industrial chemicals (TICs), and volatile organic compounds (VOCs)
These substances are critical for safety and environmental monitoring.
Why is the ChemProX useful for field applications?
It provides real-time, continuous monitoring of hazardous chemicals in air
This feature is essential for first responders and safety personnel.
How does IMS in the ChemProX differ from HPMS in the MX908?
IMS measures ion drift time, while HPMS filters ions by mass-to-charge ratio
This fundamental difference affects how each system identifies and analyzes chemicals.
Which system is faster for real-time monitoring, IMS (ChemProX) or HPMS (MX908)?
IMS (ChemProX) provides continuous real-time monitoring, while HPMS (MX908) takes discrete samples
Continuous monitoring is vital for tracking changes in environmental conditions.
Which system provides more detailed chemical identification?
HPMS (MX908) gives more precise compound identification and can differentiate similar chemicals better
This capability is crucial for forensic and analytical chemistry.
Which technology is better for detecting airborne threats over time?
IMS (ChemProX), because it continuously samples the air
Continuous sampling allows for the detection of transient chemical threats.
Which detector is more portable and user-friendly?
Both are portable, but ChemProX (IMS) is designed for simpler, hands-free operation in PPE environments
User-friendly design is important for use in emergency situations.
In IMS, a pump system draw in gas and vapors and separates ____ using an electrical field and directs ____ to different sensors to measure the ____ _____ distribution
Ions
Ions
Ion mobility
What possible call warrants the chemproX
CWA calls and TIC calls
Does Chempro get calibrated each time?
No
Just confidence check
Two modes are?
CWA and TIC
Be careful to not do what when sampling?
Oversaturate the sensors
Some household items to avoid when sampling
Sharpies
Floor waxes
Paint thinners
