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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Summary of Test Method 4. Cap the bottle and shake well. Introduction of pH paper to an actual sample or sample cap may remove some oil from the sample. For example, collect four individual mL samples over the course of a day. The test blank zstm be taken through all of the steps of the analytical method including sample preservation and pretreatment.
Weighing will be more accurate. Obtain net values for single-beam and infrared? If the sample is to be shipped by commercial carrier, U.
Do not exceed 50 mL of total aetm during the extraction and rinse procedure. To reduce the solvent expense, it may be prudent to use methylene chloride or a solvent other than the solvent used for extraction.
If the concentration of oil and grease exceeds the calibration range, dilute extract to bring sample within calibration range. If such an emulsion cannot be broken by any attempted means, the test method is not applicable to the problem sample.
As discussed in Section 11, the concentrations of these standards can be adjusted to stay within the linear range of the IR instrument. Atm a few cases, the composition of the oil and grease in a sample will be known. Fill bottle with minimal headspace to prevent loss of volatile constituants.
The data presented here is for reference or information only and may be useful if another interlaboratory method validation study is performed.
If the concentration of the analyte is less than? The high probability that extractable matter may adhere to sampling equipment and result in measurements that are biased low precludes the collection of composite samples for determination of oil and grease. Included in this estimation of oil and grease are any other compounds soluble in the solvent. If the concentration of non-polar material exceeds the calibration range, dilute the extract to bring the concentration within the calibration range.
L of octanoic acid by the water volume in liters. A solution containing equal volumes of isooctane and octanoic acid will have a density of 0. Ideally, a linear calibration d7606 will be obtained from these standards.
ASTM D – standard test method by Infrared Determination
For double-beam operation, either block the light beam from the reference 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.
Quality Control QC In order to be certain that analytical values obtained using this test method are valid and accurate within the con? After running, drain, and clean the sample cell. However, this amount may be insufficient for some samples.
Collect an additional 1 or 2 sample aliquots for the matrix spike and matrix satm duplicate Section Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such asym, are entirely their own responsibility. It is highly recommended that calibration standards be prepared on a weight basis i.
Remove the solid with a clean spatula, and add about 1 g of fresh sodium sulfate to the? Rinse with a small portion of solvent and discard the rinsate.
FT-IR Environmental Hydrocarbons ASTM D7066 Analysis Pack
If you feel that your comments have not received a fair hearing you should make your views r7066 to the ASTM Committee on Standards, at the address shown below.
D — 04 A nearly horizontal, straight line should be obtained. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Several labs reported problems c7066 or detecting low levels of oil and grease using AK Scan as in If the spike plus the background concentration exceeds the calibration range, perform an appropriate dilution so that the reading is within the calibration dd7066. Spike an aliquot of the sample with a known 6 Where: The LCS must be taken through all of the steps of the analytical method including sample preservation and pretreatment.
Also, in relation to infrared? A superscript epsilon e indicates an editorial change since the last revision or reapproval. However, all data must be obtained consistently by one means or the other, not a combination of the two.
If there is doubt about whether the amount of silica gel is adequate, the amount needed should be determined by test. Keep a record of each dilution for determination of the concentration in the sample in The value obtained must fall within the control limits speci? L for solution density of 0. Do not rinse the sample bottle with the sample to be analyzed. Ideally, the calibration curve obtained will be linear refer to Section Obtain the net absorbance for the peak that occurs near cm-1 3.