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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D — 04 The spiking solution may be used as an IRM. If you feel that your comments have not received a fair hearing you should make astn views known to the ASTM Committee on Standards, at the address shown below. Included in this estimation of oil and grease are any other compounds soluble in the solvent.
Cool zstm to room temperature before use. Calculate the percent recovery of the LCS using the following equation: As discussed in Section 11, the concentrations of these standards can be adjusted to stay within the d7066 range of the IR instrument.
To more accurately calculate the? In the procedure below, the IR instrument is calibrated from 0. To reduce the solvent expense, it may be prudent to use methylene chloride or a solvent other than the solvent used for extraction. Obtain the net absorbance for the peak that occurs near cm-1 3.
Do not exceed 50 mL of total solvent during the extraction and rinse procedure. The same cell or matched cells should be used throughout the calibration. Spiking solution section Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service c7066.
ASTM D – standard test method by Infrared Determination
If emulsion forms between the phases and the emulsion is greater than one-third the volume of the solvent layer, the laboratory should employ emulsion-breaking techniques to complete the phase separation. Either the average calibration factor CFm or the calibration curve is used, not both.
If a concentration other than the recommended concentration is used, refer to Practice D for information on applying d766 F test and t test in evaluating the acceptability of the mean and standard deviation.
Alternatively, solid-phase extraction SPEcontinuous liquid-liquid extraction, or other extraction techniques may be used to prevent emulsion formation. Each replicate must be taken through the complete f7066 test method including 5 Therefore, samples must be collected as grab samples. If the result is not within these limits, analysis of samples is halted until the problem is corrected, and either all samples in the batch must be reanalyzed, or the results must be quali?
Mix equal volumes of concentrated HCl and water 8. Scan as in It is highly recommended that calibration standards be prepared on a weight basis i. Under these circumstances, one of the following remedies must be employed: The extract is diluted to 50mL and a portion is examined by infrared spectroscopy IR for an oil and grease measurement.
Subtract the volume of acid added to the sample, as recorded in 9. A solution containing equal volumes of isooctane and octanoic acid will have a density of 0.
FT-IR Environmental Hydrocarbons ASTM D7066 Analysis Pack
Ideally, a linear calibration curve will be obtained from these standards. Calibration NOTE 3—The cell s used for calibration must be e7066 thoroughly cleaned with solvent and dried prior to beginning the calibration procedure.
For example, collect four individual d70666 samples over the course of a day. L of octanoic acid by the water volume in liters. Do not attempt to proceed since accurate, quantitative results for the test are not obtainable.
The amount of acid required will be dependent upon the pH and buffer capacity of the sample at the time of collection.
L of isooctane by the water volume in liters. Weighing will be more accurate. Be sure to record the concentration added to the LCS.