E – 07 Standard Test Method for Analysis of Aluminum and Aluminum Alloys by Atomic Emission Spectrometry, aluminum, aluminum alloys, atomic. Buy ASTM E TEST METHOD FOR ANALYSIS OF ALUMINUM AND ALUMINUM ALLOYS BY SPARK ATOMIC EMISSION. ASTM E Standard Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry Scope
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Link to Active This link will always route to the current Active version of the standard. Such metals shall be trapped by bubbling the exhaust through water or a lter system, or the exhaust shall be vented to the atmosphere at a nonhazardous location.
Department of Commerce, Gaithersburg, MD Concentration ratio calculations make it possible to report the concentration of the aluminum as well as the major, minor, and trace elements, which can be valuable for high-purity aluminum. The range shown for each element does not demonstrate the actual usable analytical range for that element. NOTE 12—Modern direct-reading spectrometers should show little drift in the response of channels sstm time. The ratios of the voltages of the analytical lines to the voltage of the internal standard line are converted into concentrations either manually by graphs, tables, or X-Y recorders, or by a computer in accordance with Practice E This shall be done initially and as often as necessary thereafter to maintain proper alignment.
For the values marked with an F, the available data e125 for a concentration greater than ten times but less than times the expected detection limit.
The system also may contain the program circuitry that times the ush, pre-burn and exposure intervals, turns the source on and off, etc. For each major alloy type, the calibration curves are adjusted by burning a type reference material in order to obtain the correct concentrations for various alloys.
When a burn is rejected, it may be replaced with another burn in order to maintain the normal number of burns to be averaged. Usually the single standardant is a high reference material used to set the gain.
It can be applied to other types of specimens if there are appropriate reference materials, or if the specimens are remelted. X 5 the average of the individual measurements. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The range shown for each element does not demonstrate the actual usable analytical range for that element. A few benchmark Certied Reference Materials are available from the National Institute of Standards and Technology5 and many other reference materials are available commercially in both chill-cast and wrought forms.
Link to Active This link will always route to the current Active version of the standard.
Usually they have not yet become as stable as they will be after a month or so, and consequently, the readings obtained may show signicant drift. Normally standardization will require ten to fteen minutes. Type reference materials are used to adjust the concentrations read from the binary curves in order to report the correct concentrations for specic alloys. However, if at any time the gain adjustment of any channel drops below 0. The specimen shall seal the 8 to 15 mm opening in the top of the excitation chamber.
If the analytical interest is just in low concentrations near the detection limit, a low standardant is used and either a gain or a background control may be adjusted. With such a curve, seriously erroneous analyses may be obtained for unknown specimens with concentrations between the calibrants.
NOTE 13—Physically cleaning the counter electrode after each exposure, using a motor-driven wire brush, can prolong the time before a major cleaning or replacement is needed. The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
See Appendix X1 for additional information concerning the acquisition of calibration data. Cylinders of either compressed argon gas or liquid argon may be employed.
A good burn will have a deeply pitted area in the center, surrounded by a blackish ring, usually wider opposite the argon inlet. To demonstrate compliance with legislated Hg content limits, use of an alternate method capable of analysis with a minimum reporting limit of 0. It employs an analytical curve for each element that covers a relatively limited concentration range.
J If phosphorous is to be determined, the most sensitive line appears to be Concentration or satm ratio plots can be employed. The wavelength coverage must include the analytical lines required for the needed concentration ranges, as listed in Table 1. Suitable techniques include but are not limited to glow discharge mass spectrometry, XRF, and cold ashm AA. The computer may have calculated a curve that weaves e151 and out between the points for the calibrants. The ratio of P Refer to Practice E The radiant energies of selected analytical lines and an internal standard line are converted into electrical currents by photomultipliers.