ASTM E1683-02

Standard Practice for Testing the Performance of Scanning Raman Spectrometers

SCOPE
1.1 This practice is designed for routine testing of scanning Raman spectrometer performance and to assist in locating problems when performance has degraded. It is also intended as a guide for obtaining and reporting Raman spectra.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautions, see 7.2.1.
1.3 Because of the significant dangers associated with the use of lasers, ANSI Z136.1 should be followed in conjunction with this practice.

General Information

• Status: Historical
• Publication Date: 09-Mar-2002
• ICS: 71.040.50 - Physicochemical methods of analysis
• Technical Committee: E13 - Molecular Spectroscopy and Separation Science
• Drafting Committee: E13.08 - Raman Spectroscopy

Relations

• Replaces: ASTM E1683-95A - Standard Practice for Testing the Performance of Scanning Raman Spectrometers
• Effective Date: 10-Mar-2002
• Replaced By: ASTM E1683-02(2007) - Standard Practice for Testing the Performance of Scanning Raman Spectrometers
• Effective Date: 01-Mar-2007
• Referred By: ASTM D8470-22 - Standard Practice for Development and Implementation of Instrument Performance Tests for Use on Multivariate Online, At-Line and Laboratory Spectroscopic Based Analyzer Systems
• Effective Date: 10-Mar-2002
• Referred By: ASTM E2056-04(2016) - Standard Practice for Qualifying Spectrometers and Spectrophotometers for Use in Multivariate Analyses, Calibrated Using Surrogate Mixtures
• Effective Date: 10-Mar-2002
• Referred By: ASTM E1866-97(2021) - Standard Guide for Establishing Spectrophotometer Performance Tests
• Effective Date: 10-Mar-2002
• Referred By: ASTM E2529-06(2022) - Standard Guide for Testing the Resolution of a Raman Spectrometer
• Effective Date: 10-Mar-2002
• Referred By: ASTM E1840-96(2022) - Standard Guide for Raman Shift Standards for Spectrometer Calibration
• Effective Date: 10-Mar-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E1683–02
Standard Practice for
Testing the Performance of Scanning Raman
1
Spectrometers
This standard is issued under the fixed designation E 1683; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope notapplyformultichannelorFouriertransforminstruments,or
for gated integrator systems requiring a pulsed laser source.
1.1 This practice is designed for routine testing of scanning
Use of this practice is intended only for trained optical
Raman spectrometer performance and to assist in locating
spectroscopists and should be used in conjunction with stan-
problems when performance has degraded. It is also intended
dard texts.
as a guide for obtaining and reporting Raman spectra.
1.2 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 Laser—A monochromatic, continuous laser source,
responsibility of the user of this standard to establish appro-
such as an argon, krypton, or helium-neon laser, is normally
priate safety and health practices and determine the applica-
used for Raman measurements. The laser intensity should be
bility of regulatory limitations prior to use. For specific
measured at the sample with a power meter because optical
precautions, see 7.2.1.
components between the laser and sample reduce laser inten-
1.3 Because of the significant dangers associated with the
sity. A filtering device should also be used to remove non-
use of lasers, ANSI Z136.1 should be followed in conjunction
lasting plasma emission lines from the laser beam before they
with this practice.
reach the sample. Plasma lines can seriously interfere with
2. Referenced Documents Raman measurements. Filtering devices include dispersive
monochromators and interference filters.
2.1 ASTM Standards:
2 5.2 Sampling Optics—Commercial instruments can be pur-
E 131 Terminology Relating to Molecular Spectroscopy
chased with sampling optics to focus the laser beam onto a
E 1840 Guide for Raman Shift Standards for Spectrometer
2
sample and to image the Raman scattering onto the monochro-
Calibration
mator entrance slit. Sample chamber adjustments are used to
2.2 ANSI Standard:
3
center the sample properly and align the Raman scattered light.
Z136.1 Safe Use of Lasers
A schematic view of a conventional 90° Raman scattering
3. Terminology geometry is shown in Fig. 1. The laser beam propagates at a
right angle to the direction in which scattered light is collected.
3.1 Terminology used in this practice conforms to the
It is focused on the sample at the same position as the
definitions in Terminology E 131.
monochromator entrance slit image. Other geometries such as
4. Significance and Use
180° backscattering are also used. With single monochroma-
tors, a filter is normally placed in the optical collection path to
4.1 A scanning Raman spectrometer should be checked
block light at the laser frequency from entering the monochro-
regularly to determine if its condition is adequate for routine
mator.
measurements or if it has changed. This practice is designed to
5.3 Polarization—For routine measurements the polariza-
facilitate that determination and, if performance is unsatisfac-
tion of the laser at the sample is oriented normal to the plane
tory, to identify the part of the system that needs attention.
of the page in Fig. 1. However, measurements using different
These tests apply for single-, double-, or triplemonochromator
polarizations are sometimes used to determine vibrational
scanning Raman instruments commercially available. They do
symmetries as part of molecular structure determinations. A
variety of optical configurations can be used to make polariza-
1
This practice is under the jurisdiction of ASTM Committee E13 on Molecular
tionmeasurements;adetaileddiscussionoftheseisbeyondthe
Spectroscopy and is the direct responsibility of Subcommittee E13.08 on Raman
scope of this practice. Briefly, for polarization simple measure-
Spectroscopy.
ments of randomly-oriented samples (most of the clear liq-
Current edition approved March 10, 2002. Published April 2002. Originally
published as E 1683 – 95. Last previous edition E 1683 – 95a. uids), an analyzing element such as a polaroid filter or
2
Annual Book of ASTM Standards, Vol 03.06.
analyzing prism is added to the optical system and Raman
3
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Floor, New York, NY 10036.
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