AceID Flashcards
AceID technology
Raman spectroscopy
ORS
Orbital raster scan
*rapidly moves laser to avoid overheating product
_____ materials can obstruct the RAMAN laser
Fluorescent
What do the peaks in the wavelength represent
Each peak corresponds to a specific molecular bond vibration
Roughly how many chemicals in the library
~1000
It cannot measure ____ ____ ____
Salts
Ionic bonds
Metals
Chemical bond formed by the transfer of electrons from one atom to another, creating oppositely charged ions that attract each other
Ionic bond
A chemical bond where two atoms share electrons to achieve a stable electron configuration
Covalent bond
Can measure up to ___ chemicals in a mixture
2
Can detect up to a ___ thick clear container
5mm
Can it ignite black powder?
No
When/where to use meter?
Public safety sample
Determine isolation distance
Decon
True “unknown” calls
What is the first step in Raman spectroscopy, and why is it important?
A laser is directed at the sample to excite its molecules and create scattered light.
This initial step is crucial for initiating the Raman effect, which is essential for analysis.
What types of light scattering occur during Raman spectroscopy?
Most light scatters unchanged (Rayleigh scattering), but a small portion shifts energy due to molecular vibrations (Raman scattering).
The distinction between Rayleigh and Raman scattering is fundamental to understanding the technique.
What is a Raman shift, and what does it indicate?
A Raman shift is the energy change in scattered light, which reveals the molecular structure of the sample.
The Raman shift helps in identifying specific molecular vibrations corresponding to different chemical bonds.
How does ace id use the Raman spectrum for identification?
It compares the unique Raman spectrum of the sample to a database to identify chemicals.
This comparison allows for rapid identification of hazardous materials.
Why is Raman spectroscopy effective in hazmat situations?
It allows non-contact analysis of materials, even through transparent containers like glass or plastic.
This feature is particularly useful for safely analyzing unknown substances without direct interaction.
What is the first step to operate the ACE-ID?
Press the power button
What code is used to unlock the device?
3-1-4-2
What button is pressed to start identification?
Identify
How far should the instrument be from the sample?
5-6 mm (1/8-1/4 in)
What should be pressed after positioning the instrument?
Forward Arrow
When should you hold the ACE-ID in position?
Until ‘Searching’ screen appears
How should loose solid samples be prepared?
Create a small thick pile (1-2mm height)
What should be done to a solid sample in a plastic bag?
Accumulate material in a corner and flatten it
What position should the ACE-ID be in for solid samples?
Inverted above the sample like a tripod
What is the recommended accessory for liquids and vials?
Sampling Accessory Guide
What type of laser does the ACE-ID use?
Rastering Class 3B Laser
What is required when working within 2m of the laser?
Laser safety glasses (OD 3 at 785 nm)
What support service can be contacted for spectral interpretation?
ReachBackID
What is the focal point distance for optimal analysis?
5-6 mm from the external port
