ASTM D7066-04 PDF

ASTM D[1] – 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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Spike an aliquot of the sample with a known 6 Where: This test method contains procedures that can assist the analyst in breaking such emulsions. If the extract is milky, remove the Na2SO4 cake Section It is desirable to?

The replicates may be interspersed with samples. A number in parentheses indicates the year of last reapproval. NOTE 5—Use of the sodium asttm is necessary to prevent water from interfering in the determination.

ASTM D7066

However, place the reference cell in the reference beam during all scans. Also, in relation to infrared?

If linearity cannot be achieved past a certain concentration, consider that concentration the upper bounds of the calibration and adjust the calibration standards accordingly. In accordance with Section 1. If the amount of acid required is not known, adtm the pH measurement on a separate sample that will not be analyzed.

Of those measured, certain ones may be adsorbed by silica gel while others may not. C One laboratory reported a result of for oil and grease, nearly 3 ast the mean recovery among the other laboratories, and a value of zero for non-polar material, which are highly suspect results.

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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. However, all traces of methylene chloride or other solvent must be removed so that they do not compromise the measurement. Mix equal volumes of concentrated HCl and water 8. L for solution density of 0.

Cap with the original cap and shake the sample bottle to rinse all interior surfaces.

The LCS must be taken through all of the steps of the analytical method including sample preservation and pretreatment. Calibration NOTE 3—The cell s used for calibration must be initially thoroughly cleaned with solvent and dried prior to beginning the calibration procedure.

ASTM D – standard test method by Infrared Determination

Current edition approved June 1, Do not allow the sample to over? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonec7066-04or service astm.

Weighing will be more accurate. Rinse with a small portion of solvent and discard the rinsate. To reduce the solvent expense, it may be prudent to use methylene chloride or a solvent other than the solvent used for extraction. The volume should always be greater than 1? D70660-4 otherwise indicated, it is intended that all reagents shall conform to the speci? Fill bottle with minimal headspace to prevent loss of volatile constituants.

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If the spike wstm the background concentration exceeds the calibration range, perform an appropriate dilution so that the reading is within the calibration range. Calculate the percent recovery of the LCS using the following equation: In a few cases, the composition of the oil and grease in a sample will be known.

Keep a record of each dilution for use in Either the average calibration factor CFm or the calibration curve is used, not atsm. Spiking solution 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 rights, are entirely their own responsibility.

The spiking solution may be used as an IRM. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Use the d70666-04 sample because removing a portion would not apportion the oil and grease that adheres to the bottle surfaces. Remove the solid with a clean spatula, and add about d7066-40 g of fresh sodium sulfate to the? The LCS can be the standard spiking solution