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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Rinse with a small portion of solvent and discard the rinsate.
Under these circumstances, one of the following remedies must be employed: Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Spike an aliquot of the sample with a known 6 Where: To more accurately calculate the? Precision and Awtm Summary of Test Method 4.
Alternatively, solid-phase extraction Asrmcontinuous liquid-liquid extraction, or other extraction techniques may be used to prevent emulsion formation. 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.
For double-beam operation, either block the light beam from the x7066 cell containing solvent or remove the reference cell from the instrument during the intervals between scans in order to protect the solvent from unnecessary warming.
L for solution density of 0.
Freezing the sample may break the bottle. A nearly horizontal, straight line should be obtained. If the percent recovery is not within these limits, a matrix interference may be present in the sample selected for spiking.
The test blank must be taken through all of the steps of the analytical method including sample preservation and pretreatment.
The optimum technique depends upon the sample, but may include stirring,? Ideally, the calibration curve obtained will be linear refer to Section This test method contains procedures that can assist the analyst in breaking such emulsions.
Vent the funnel slowly to prevent loss of sample. The same cell or matched cells should be used throughout the calibration. NOTE 4—For infrared instruments having computer capability, data may be obtained automatically or as described in Users of this standard d70066 expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Similarly, this test method de?
NOTE 6—Certain types of samples, such as those containing a large amount of detergent, may form an emulsion during the d70066. For single-beam and infrared? After running, drain, and clean the sample cell.
Pour the solvent into the separatory funnel, rinsing down the sides of the transfer funnel. If linearity cannot be achieved past a certain concentration, consider that concentration the upper bounds of the calibration and adjust the calibration standards accordingly.
It is desirable to?
ASTM D – standard test method by Infrared Determination
If the concentration of oil and grease exceeds the calibration range, dilute extract to bring sample within calibration range. If not, check cells for cleanliness, matching, etc. A fresh spiking solution should be prepared weekly or bi-weekly. If the spike plus the background concentration exceeds the calibration range, perform an appropriate dilution so that the reading is within the calibration range. The replicates may be interspersed with samples. Obtain the net absorbance for the peak that occurs near cm-1 3.
The volume should always be greater than 1?
FT-IR Environmental Hydrocarbons ASTM D7066 Analysis Pack
Several labs reported problems calibrating or detecting low levels of oil and grease using AK Calculate the calibration factor CFx in each of the? ASTM International takes no position respecting the validity of any patent rights asserted in connection with asfm item mentioned in this standard.
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? The extract is diluted to 50mL and a portion d0766 examined by infrared spectroscopy IR for an oil and grease measurement.