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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A solution containing equal volumes of isooctane and octanoic acid will have a density of 0. If linearity cannot be achieved past a certain concentration, consider that concentration the upper bounds of the calibration and adjust the calibration standards accordingly. NOTE 8—The amount of silica gel needed has been estimated at 3 g for every mg of polar material.
Current edition approved June 1, Introduction of pH paper to an actual sample or sample cap may remove some oil from the sample.
The volume should always be greater than 1? Ideally, a linear calibration curve will be obtained from these standards. Those not adsorbed are measured as nonpolar material. Alternatively, samples can be collected in the? Precision and Bias D — 04 e7066-04 Collect an additional 1 or 2 d7066–04 aliquots for the matrix spike and matrix spike duplicate Section Calibration NOTE 3—The cell s used for calibration must be initially thoroughly cleaned with solvent and dried prior to beginning the calibration procedure.
Obtain the net absorbance for the peak that occurs near cm-1 d7066-04. If the result is not within these limits, analysis of samples is halted until the problem is corrected, and either all samples in the batch must be reanalyzed, or the results must be quali? The high probability that extractable matter may adhere to sstm equipment and result in measurements that are biased low precludes the collection of composite samples for determination of oil and grease.
Alternatively, the actual sample density can be determined by weighing mL of the sample water in a tared mL? The replicates may be interspersed with samples. 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 not, check cells for cleanliness, matching, etc. Scan aetm in In a few cases, the composition of the oil and grease in a sample will be known.
The LCS must be taken through all of the steps of the analytical qstm including sample preservation and pretreatment. Keep a record of each dilution for use in It is the responsibility asym the user of this standard to establish appropriate safety and health practices and determine D Guide for Good Laboratory Practices2 the applicability of regulatory limitations prior to use. If calibration is not veri? After running, drain, and clean the sample cell.
A number in parentheses indicates the year of last reapproval. Each replicate must be taken through the complete analytical test method including 5 Of those measured, certain ones may be adsorbed by silica gel while others may not. Either the average calibration factor CFm or the calibration curve is used, not both. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
L of e7066-04 acid by the water volume in liters.
Calculate the calibration factor CFx in each of the? If a composite measurement is required, individual grab samples collected at prescribed time intervals may be analyzed separately and the concentrations averaged.
If the extract is milky, remove the Na2SO4 cake Section Mix equal volumes of concentrated HCl and water 8. Weighing will be more accurate.
The spike must produce a concentration in the spiked sample that is 2 – 5 times the background concentration or 10 times the detection limit of the test method, whichever is greater.
Under these circumstances, one of the following remedies must be employed: Be sure to record the concentration added to the LCS.
Rewet sodium sulfate with solvent before use. Several labs reported problems calibrating or detecting low levels of oil and grease using AK Be sure to record the concentration of oil and grease and non-polar material added.
ASTM D – standard test method by Infrared Determination
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.
If such an emulsion cannot be broken d706-04 any attempted means, the test method is not applicable to the problem sample. If the ast plus the background concentration exceeds the calibration range, perform an appropriate dilution so that the reading is within the aztm range. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
The LCS can be the standard spiking solution If emulsion forms between the phases and the emulsion is greater than one-third the volume of the solvent layer, the laboratory should employ emulsion-breaking techniques to complete the phase separation.
Obtain net values for single-beam and infrared?