ASTM D – Free download as PDF File .pdf), Text File .txt) or read online for free. New ASTM Method D With the manufacture of Freon banned by the Montreal Protocol in , the old ASTM method (D ) that used infrared. The FT-IR Environmental Hydrocarbons ASTM D Application Pack contains all of the resources and components necessary to perform efficient analysis of.
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If a composite measurement is required, individual grab samples collected at prescribed time intervals may be analyzed separately and the concentrations averaged. If there is doubt about whether the amount of silica gel is adequate, the amount needed should be determined by test. Be sure to record the concentration 7d066 to each replicate.
Precision and Bias Cap with the original cap and shake the sample bottle to rinse all interior surfaces. If linearity cannot be achieved past a certain concentration, consider that concentration the upper bounds of the calibration and adjust the calibration standards accordingly.
For double-beam operation, either block the light beam from the reference ashm containing solvent or remove the reference cell from the instrument during the intervals between scans in order to protect the solvent from unnecessary warming.
Cool cell to room temperature before use. The extract is diluted to 50mL and a portion is examined by infrared spectroscopy IR for an oil and grease measurement. Calculate the calibration factor CFx in each of the?
ASTM D – standard test method by Infrared Determination
Do not rinse the sample bottle with the sample to be analyzed. Wet thoroughly with solvent before using. Rely upon recommendations of the manufacturer for single-beam and infrared? The replicates may be interspersed with samples. Ideally, the calibration curve obtained will be linear refer to Section One laboratory disposed of its samples before aztm the non-polar analysis.
In accordance with Section 1. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine D Guide for Good Laboratory Practices2 the applicability of regulatory limitations prior to use.
Each asym must be taken through the complete analytical test method including 5 If calibration is not veri? NOTE 4—For infrared instruments having computer capability, data may be d0766 automatically or as described in A solution containing equal volumes of isooctane and octanoic acid will have a density of 0. To reduce the solvent expense, it may be prudent to use methylene chloride or a solvent other than the solvent used for extraction.
However, in order to obtain consistent results between sample sets and between laboratories with different wastewater matrices, calibration with the known oil and grease in a sample should not be used in this method. D — 04 Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Weighing will be more accurate.
Several labs reported problems calibrating or detecting low levels of oil and grease using AK The optimum technique depends upon the sample, but may include stirring,? Do not allow the sample to over?
Therefore, samples must be collected as grab samples. Similarly, this test method de?
Fill bottle with minimal headspace to prevent loss of volatile constituants. The amount of acid required will be dependent upon the pH and buffer capacity of the sample at the time of collection.
A number in parentheses indicates the year of last reapproval. Spiking solution section The same cell or matched cells should be used throughout the calibration. In the procedure below, the IR instrument is calibrated from 0.
Of those measured, certain ones may be adsorbed by silica gel while others may not. If a sstm is encountered that exceeds the calibration range, dilute the sample extract to bring the concentration into the calibration range.
Summary of Test Method 4.