1. Scope

1.1 This practice covers general recommendations for photoelectric photometers and spectrophotometers and for photometric practice prescribed in ASTM methods for chemical analysis of metals, sufficient to supplement adequately the ASTM methods. A summary of the fundamental theory and practice of photometry is given. No attempt has been made, however, to include in this practice a description of every apparatus or to present recommendations on every detail of practice in ASTM photometric or spectrophotometric methods of chemical analysis of metals.

1.2 These recommendations are intended to apply to the ASTM photometric and spectrophotometric methods for chemical analysis of metals when such standards make definite reference to this practice, as covered in Section 4.

1.3 In this practice, the terms 'photometric' and 'photometry' encompass both filter photometers and spectrophotometers, while 'spectrophotometry' is reserved for spectrophotometers alone.

1.4 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

E131 Terminology Relating to Molecular Spectroscopy

E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials

E168 Practices for General Techniques of Infrared Quantitative Analysis

E169 Practices for General Techniques of Ultraviolet-Visible Quantitative Analysis

E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers

Keywords

absorption; photometry; spectrophotometry: Absorption--spectrochemical instrumentation; Calibration--spectrochemical analysis instrumentation; Cell corrections; Chemical analysis--metals/alloys; Chemical laboratories--spectrochemical; Concentration (of elements); Illumination; Molecular absorption spectrometry; Monochromators; Photometry; Radiation exposure; Ringbom parameters; Spectrophotometry--absorption; Transmittance and reflectance;

ICS Code

ICS Number Code 77.040.30 (Chemical analysis of metals)

DOI: 10.1520/E0060-98

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