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.
Alternatively, the actual sample density can be determined by weighing mL of the sample water in a tared mL? The amount of acid required will be dependent upon the pH and buffer capacity of the sample at the time of collection.
Cap with the original cap and shake the sample bottle to rinse all interior surfaces. Included in this estimation of oil and grease are any other compounds soluble in the solvent. Current edition approved June 1, Do not allow the sample to over? Keep a record of each dilution for use in The test blank must be taken through all of the steps of the d7066-40 method including sample preservation and pretreatment.
Rinse the tip of the separatory funnel, Na2SO4,? Calibration NOTE 3—The cell s used for calibration must be initially aatm cleaned with solvent and dried prior to beginning the calibration procedure. As discussed in Section 11, the concentrations of these standards can be adjusted to stay within the linear range of the IR instrument. Scan as in Cool cell to room temperature before use.
Quality Control QC In order to be certain that analytical values obtained using this test method are valid and accurate within the con? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Drain and clean the sample cell.
Do not rinse the sample bottle with the sample to be analyzed. If a sample is encountered that exceeds the calibration range, dilute the sample extract to bring the concentration into the calibration range.
Obtain the net absorbance for the peak that occurs near cm-1 3. If the concentration of non-polar material exceeds the calibration range, dilute the extract to bring the concentration within the calibration range.
Collect an additional 1 or 2 sample aliquots for the matrix spike and matrix spike duplicate Section Other labs used AK with no issues, indicating the use of AK is dependent on the type and model of IR instrument used. Vent the funnel slowly to prevent loss of sample. Spiking solution section Alternatively, samples can be collected in the? Weighing will be more accurate.
C One laboratory reported a result of for oil and grease, nearly 3 times the mean recovery among the other laboratories, and a value of zero for non-polar material, which are highly suspect results. Spike an aliquot of the sample with a known 6 Where: If the IR instrument cannot be calibrated to 0.
If not, check cells for cleanliness, matching, etc. If the concentration of the analyte is less than? After running, drain, and clean the sample cell. Fill bottle with minimal headspace to prevent loss of volatile constituants. If such an emulsion cannot be broken by any attempted means, the test method is not applicable to the problem sample.
A solution containing equal volumes of isooctane and octanoic acid will have a density of 0. Cap the bottle and shake well.
ASTM D – standard test method by Infrared Determination
Pour the solvent into the separatory funnel, rinsing down the sides of the transfer funnel. To reduce the solvent expense, it may be prudent to use methylene chloride or a solvent other than the solvent used for extraction.
L for solution density of 0. However, place the reference cell in the reference beam d766-04 all scans. Mix equal volumes of concentrated HCl and water 8.
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.