ASTM E885

Scope

1.1 These test methods cover the determination of metals in solution by atomic absorption spectroscopy (AAS).

1.2 The following sections outline the operating parameters for the individual metals:

1.3 Detection limits, sensitivity, and optimum ranges of the test methods will vary with the various makes and models of atomic absorption spectrophotometers. The data shown in Table 1 provide some indication of the actual concentration ranges measurable by direct aspiration and using furnace techniques. In the majority of instances, the concentration range shown in the table by direct aspiration may be extended much lower with scale expansion and conversely extended upwards by using a less sensitive wavelength or by rotating the burner head. Detection limits by direct aspiration may also be extended through concentration of the sample or through solvent extraction techniques, or both. Lower concentrations may also be determined using the furnace techniques. The concentration ranges given in Table 1 are somewhat dependent on equipment such as the type of spectrophotometer and furnace accessory, the energy source, and the degree of electrical expansion of the output signal.

1.4 When using the furnace techniques, the analyst should be cautioned as to possible chemical reactions occurring at elevated temperatures that may result in either suppression or enhancement of the analysis element. To ensure valid data with furnace techniques, the analyst must examine each matrix for interference effects (see 6.2) and if detected, treat accordingly using either successive dilution, matrix modification or method of standard additions (see 10.5).

1.5 Where direct aspiration atomic absorption techniques do not provide adequate sensitivity, in addition to the furnace procedure, reference is made to specialized procedures such as gaseous hydride method for arsenic and selenium, the cold-vapor technique for mercury and the chelation-extraction procedure for selected metals.

1.6 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems 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 hazard statement, see 8.4 and 17.2.3.

Keywords

Aluminum content; Antimony content; Manganese content; Vanadium content; refuse-derived-fuels/RDF-3, by direct aspiration/furnace; spectrophotometric procedures,; Arsenic content; refuse-derived fuels/RDF, by direct aspiration furnace/gaseous hydride; spectrophotometric procedures,; Barium content; Beryllium content; Cadmium content; Cobalt content; Copper content; Iron content; Lead content; Molybdenum content; Nickel content; Silver content; Tin content; Titanium content; Zinc content; refuse-derived fuel/RDF, by direct aspiration/furnace spectrophotometric; procedures,; Chelation-extraction spectrophotometric procedure; Cold vapor spectrophotometric procedure; Direct aspiration spectrophotometric procedure; Gaseous hydride spectrophotometric procedure; Metals and metallic materials-resource recovery; Resource recovery-solid waste refuse-derived fuel/RDF; metals analyses in refuse-derived-fuel/RDF, by spectrophotometric; methods,; Chromium content; refuse-derived fuel/RDF, by direct; aspiration/furnace/chelation-extraction spectrophotometric techniques,; Furnace spectrophotometric procedure; metals analyses (in refuse-derived-fuel/RDF-3), by spectrophotometric; methods,; Lithium content; Magnesium content; Potassium content; refuse-derived fuel/RDF, by direct aspiration spectrophotometric; procedures,; Mercury content; refuse-derived fuel/RDF, by cold vapor spectrophotometric procedures,; Metal content; refuse-derived fuel/RDF, by spectrophotometric methods,; Selenium content; refuse-derived fuel/RDF, by furnace/gaseous hydride spectrophotometric; procedures,; Sodium content; refuse-derived-fuels/RDF-3, by direct aspiration spectrophotometric; procedures,; Spectrophotometry-atomic absorption; metals analyses in refuse-derived fuel/RDF

ICS Code

ICS Number Code 75.160.10 (Solid fuels)

DOI: 10.1520/E0885-88R96