ASTM E1252
Full Name
ASTM E1252 – Standard Practice for General Techniques for Obtaining Infrared Spectra for Qualitative Analysis
Scope
ASTM E1252 outlines standard practices for acquiring infrared (IR) spectra for qualitative analysis. This standard is crucial for ensuring consistent and reliable IR spectral data, which is essential for identifying unknown materials, verifying the composition of materials, and studying material properties.
Key aspects covered in ASTM E1252 include:
- Sample preparation: the standard provides guidance on preparing various sample types, including solids, liquids, and gases, for IR analysis. Techniques such as transmission, attenuated total reflection (ATR), and diffuse reflectance are addressed.
- Instrument calibration: proper instrument calibration is critical for accurate spectral measurements. ASTM E1252 outlines procedures for wavelength calibration and verifying instrument performance.
- Spectral acquisition: the standard discusses parameters influencing IR spectra quality, such as resolution, signal-to-noise ratio, and spectral range. It provides recommendations for optimizing these parameters based on the specific application.
- Data interpretation: while primarily focused on acquisition techniques, ASTM E1252 touches upon basic spectral interpretation concepts, emphasizing the use of reference spectra and databases for material identification.
It’s important to note that:
- This standard practice does not cover quantitative analysis using IR spectroscopy.
- Specific applications may require adjustments to the outlined techniques.
- Users should have a basic understanding of IR spectroscopy principles.
ASTM E1252 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM E1252 standard. Whether you need to identify an unknown substance, verify material composition, or investigate material properties, our expertise can provide valuable insights for your specific needs.
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Resources
Keywords
infrared spectroscopy; transmittance; absorbance; wavenumber; spectrum; sample preparation; background; resolution; signal-to-noise ratio; interferogram; attenuated total reflection; transmission; diffuse reflectance; specular reflectance; wavelength