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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Other grades may be used, provided it is? Rewet sodium sulfate with solvent before use. D — 04 any sample preservation and pretreatment steps. NOTE 6—Certain types of samples, such as those containing a large amount of detergent, may form an emulsion during the extraction. Fill bottle with minimal headspace to prevent loss of volatile constituants.
D — 04 Similarly, this test method de?
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Alternatively, solid-phase extraction SPEcontinuous liquid-liquid extraction, or other extraction techniques d0766-04 be used to prevent emulsion formation.
B Values obtained for Site 3 samples from one lab were extraordinarily high – over twice the known concentration – in contrast to those from other labs, which generally were lower than the true concentration. Therefore, samples must be collected as grab samples.
ASTM D – standard test method by Infrared Determination
If the sample is to be shipped by commercial carrier, U. The LCS can be the standard asm solution As discussed in Section 11, the concentrations of these standards can be adjusted to stay within the linear range of the IR instrument.
Due to the cost of performing the analysis, each matrix tested contained only one set of Youden pair concentrations. If the concentration of the analyte is less than? Cool cell to room temperature before use.
After running, drain, and qstm the sample cell. Calibration NOTE 3—The cell s used for calibration must be initially thoroughly cleaned with d706-604 and dried prior to beginning the calibration procedure.
Cap with the original cap and shake the sample bottle to rinse all interior surfaces.
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. It is highly recommended that calibration standards be prepared on a weight basis i. Other labs used AK with no issues, indicating the use of AK is dependent on the type and model of IR instrument used. The spiking solution may be used as an IRM.
Cap the bottle and shake well. Rinse the tip of the separatory funnel, Na2SO4,?
NOTE 5—Use of the sodium sulfate is necessary to prevent water from interfering in the determination. To more accurately calculate the?
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.
L for solution density of 0. To assure the most accurate concentrations, use the smallest serological pipet or syringe for measurements.
If the extract is milky, remove the Na2SO4 cake Section The nonpolar material is measured by infrared spectroscopy. Calculate the percent recovery of the LCS using the following equation: Transfer volumes have been rounded for ease of measurement and calculation.
If the relative precision and average percent recovery are outside of theses limits, the initial demonstration should be repeated. Precision and Bias Scan as in Keep a record of each dilution for determination of the concentration in the sample in A number in parentheses indicates the year of last reapproval. Rely upon recommendations of the manufacturer for single-beam and infrared?
One laboratory disposed of its samples before performing the non-polar analysis. Alternatively, samples can be collected in the? 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.
Do not allow the sample to over? Subtract the volume of acid added to the sample, as recorded in 9. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Be sure to record the concentration of oil and grease and non-polar material added. If a concentration other than the recommended concentration is used, refer to Practice D for information on applying the F test and t test in evaluating the acceptability of the mean and standard deviation. 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 same cell or matched cells should be used throughout the calibration. Do not rinse the sample bottle with the sample to be analyzed.
NOTE 8—The amount of silica gel needed has been estimated at 3 g for every mg of polar material.