ASTM D – Free download as PDF File .pdf), Text File .txt) or read online for free. Designation: D – An American National Standard. Standard. ASTM D_能源/化工_工程科技_专业资料。Designation: D – 04 An American National Standard Standard Test Method for. Buy ASTM D() Standard Test Method for dimer/trimer of chlorotrifluoroethylene (S) Recoverable Oil and Grease and Nonpolar Material by.
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Weighing will be more accurate. Current edition approved June 1, Take care to avoid insertion of the cell stopper so tightly that the cell could burst from expansion of its contents as it resides in the light beam.
Do v7066-04 rinse the sample bottle with the sample to be analyzed. Rely upon recommendations of the manufacturer for single-beam and infrared?
To more accurately calculate the? Similarly, this test method de?
Rewet sodium sulfate with solvent before use. A fresh spiking solution should be prepared weekly or bi-weekly. The value obtained must fall within the control limits speci? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
C One laboratory reported a result of for oil and grease, nearly 3 times the mean recovery among the other e7066-04, and a value of zero for non-polar material, which are highly suspect results.
Obtain the net absorbance for the peak that occurs near cm-1 3. Alternatively, samples can be collected in the?
ASTM D – standard test method by Infrared Determination
A superscript epsilon e indicates an editorial change since the last revision or reapproval. If the extract is milky, remove the Na2SO4 cake Section If the percent recovery is not within these limits, a matrix interference may be present in the sample selected for spiking. If such an emulsion cannot be broken by any attempted d7066-4, the test method is not applicable to the problem sample. Calibration NOTE 3—The cell s used for calibration must be initially thoroughly cleaned with solvent and dried prior to beginning the calibration procedure.
For d7066-4 operation, either block the light beam from the reference wstm containing solvent or remove the reference cell from the instrument during the intervals between scans in order to protect the solvent from unnecessary warming.
Keep a record of each dilution for determination of the concentration in the sample in ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Be sure to record the ast of oil and grease and non-polar material added.
The matrix and chemistry of the solution should be equivalent to the solution used in the collaborative study.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you asrm attend. Subtract the volume of acid added to the sample, as recorded in 9.
The data presented here is for reference or information only and may be useful if another interlaboratory method validation study is performed. Cool cell to room temperature before use.
Remove the solid with astj clean spatula, and add about 1 g of fresh sodium sulfate to the? Either the average calibration factor CFm or the calibration curve is used, not both. The test blank must be taken through all of the steps of the analytical method including sample preservation and pretreatment.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. A nearly horizontal, straight line should be obtained. L for solution density of 0. To reduce the solvent expense, it may be prudent to use methylene chloride or d766-04 solvent other than the solvent used for extraction. Alternatively, solid-phase extraction SPEcontinuous liquid-liquid extraction, or other extraction techniques may be used to prevent emulsion formation.
Users of this standard are 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. Unless otherwise indicated, it is intended that all reagents shall conform to the speci?