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 fresh spiking solution should be prepared weekly or bi-weekly. For single-beam and infrared?
Other grades may be used, provided it is? If the sample is to be shipped by commercial carrier, U. One laboratory disposed of its samples before performing the non-polar analysis. It is desirable to? 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.
However, all data must be obtained consistently by one means or the other, not a combination of the two. Obtain net values for single-beam and infrared? NOTE 5—Use of the sodium sulfate is necessary to prevent water from interfering in the determination.
Remove the solid with a clean spatula, and d706604 about 1 g of fresh sodium sulfate to the? Cool cell to room temperature before use. Be sure to record the concentration added to the LCS. Precision and Bias To more accurately calculate the? Vent the funnel slowly to prevent loss of sample. Be sure to record the concentration of oil and grease and non-polar material added.
NOTE 4—For infrared instruments having computer capability, data may be obtained automatically or as described in Do not exceed 50 mL of total solvent during the extraction and rinse procedure. Calculate the calibration factor CFx in each of the? If the concentration of the analyte is less than?
Keep a record of each dilution for use in Several labs reported problems calibrating or detecting low levels of oil and grease using AK However, this amount may be insufficient for some samples.
If there is doubt about whether the amount of silica gel is adequate, the amount needed should be determined asym test.
Mix equal volumes of concentrated HCl and water 8. Prerinse the sample bottle and cap with the solvent prior to sample collection.
If the spike plus the background concentration exceeds the calibration range, perform an f7066-04 dilution so that the reading is within the calibration range. 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.
Alternatively, solid-phase extraction SPEcontinuous liquid-liquid extraction, or other extraction techniques may be used to prevent emulsion formation. Rinse with a small portion of solvent and discard the rinsate.
Unless otherwise indicated, it is intended that all reagents shall conform to the speci?
ASTM D – standard test method by Infrared Determination
The spiking solution may be used as an IRM. Fill bottle with minimal headspace to prevent loss of volatile constituants. L of octanoic acid by the water volume in liters.
The same cell or matched cells should be used throughout the calibration. If the concentration of non-polar material exceeds the calibration range, dilute the extract to bring the concentration within the calibration range. A solution containing equal volumes of isooctane and octanoic acid will have a density of 0.
Obtain the net absorbance for the peak that occurs near cm-1 3. Alternatively, samples can be collected in the?