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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If a sample is encountered that exceeds the calibration range, dilute the sample extract to bring the concentration into the calibration range. The extract is diluted to 50mL and a portion is examined by infrared spectroscopy IR for an oil and grease measurement. Prerinse the sample bottle and cap with the solvent prior to sample collection. NOTE 6—Certain types of samples, such d066-04 those containing a large amount of detergent, may form an emulsion during the extraction.

In accordance with Section 1. The LCS can be the standard spiking solution Introduction of pH paper to an actual sample or sample cap may remove some oil from the sample.

ASTM D7066

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in atm standard. To more accurately calculate the?

However, place the reference cell in the reference beam during all scans. Do not rinse the sample bottle with the sample to be analyzed. However, all traces of methylene chloride or other solvent must be removed so that they do not compromise the measurement. Calculate the percent recovery of the LCS using the following equation: For single-beam and infrared? Of those measured, certain ones may be adsorbed by silica gel while others may not.

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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.

Under these circumstances, one of the following remedies must be employed: If the concentration of the analyte is less than? The test blank must be taken through all of the steps of the analytical method including sample preservation and pretreatment.

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. Summary of Test Method 4. D — 04 any sample preservation and pretreatment steps. After running, drain, and clean the sample cell.

Subtract the volume of acid added to the sample, as recorded in 9. Alternatively, solid-phase extraction SPEcontinuous liquid-liquid extraction, or other extraction techniques may be used to prevent emulsion formation. Calibration NOTE atm cell s used for calibration must be initially thoroughly cleaned with solvent and dried prior to beginning the calibration procedure. If the concentration of oil and grease exceeds the calibration range, dilute extract to bring sample within calibration range.

Alternatively, samples can be collected in the? awtm

ASTM D – standard test method by Infrared Determination

In the procedure below, the IR instrument is calibrated from 0. Scan as in If the amount of acid required is not known, make the pH measurement on a separate sample that astk not be analyzed. Cap the bottle and shake well. Similarly, this test method de? NOTE 4—For infrared instruments having computer capability, data may be obtained automatically or as described in Ideally, a linear calibration curve will be obtained from these standards.

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L of octanoic acid by the water volume in liters. Collect an additional 1 or 2 sample aliquots for the matrix spike and matrix spike duplicate Section L for solution density of 0.

Be sure to record the concentration of oil and grease and non-polar material added. Current edition approved June 1, A fresh spiking solution should be d70666-04 weekly or bi-weekly.

Wet thoroughly with solvent before using. Precision and Bias Obtain net values for single-beam and infrared? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? If emulsion forms between d7066-044 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.

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. Do not attempt to proceed since accurate, quantitative results for the test are not obtainable.

If such an emulsion cannot be broken by any attempted means, the test method is not applicable to the problem sample.

For example, collect four individual mL samples over the course of a day. If not, check cells for cleanliness, matching, etc. Be sure to record the concentration added to each replicate.

Either the average calibration factor CFm or the calibration curve is used, not both. The spiking solution may be used as an IRM.