ASTM D7066 PDF

ASTM D[1] – Free download as PDF File .pdf), Text File .txt) or read online for free. New ASTM Method D With the manufacture of Freon banned by the Montreal Protocol in , the old ASTM method (D ) that used infrared. The FT-IR Environmental Hydrocarbons ASTM D Application Pack contains all of the resources and components necessary to perform efficient analysis of.

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To reduce the solvent expense, it may be prudent to use methylene chloride or a solvent other than the solvent used for extraction. The extract is diluted to 50mL and a portion is examined by infrared spectroscopy IR for an oil and grease measurement.

ASTM D7066

Due to the cost of performing the analysis, each matrix tested contained only one set of Youden pair concentrations.

Introduction of pH paper to an actual sample or sample cap may remove some oil from the sample.

Use the entire sample because removing a portion would not apportion the oil and grease that adheres to the bottle surfaces. If the sodium sulfate cakes when contacted with the extract,?

FT-IR Environmental Hydrocarbons ASTM D7066 Analysis Pack

If the spike plus the background concentration c7066 the calibration range, perform an appropriate dilution so that the reading is within the calibration range. Summary of Test Method 4.

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However, all data must be obtained consistently by one means or the other, not a combination of the two. If the concentration of oil and grease exceeds the calibration range, dilute extract to bring sample within calibration range.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Either the average calibration factor CFm or the calibration curve is used, not both. NOTE 8—The amount of silica gel needed has been estimated at 3 g for every mg of polar material.

If the relative precision and average percent recovery are outside of theses limits, the initial demonstration should be repeated. Remove the solid with a clean spatula, and add about 1 g of fresh sodium sulfate to the? D — 04 any sample preservation and pretreatment steps.

The nonpolar material is measured by infrared spectroscopy. 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. Of those measured, astmm ones may be adsorbed by silica gel while others may not.

In accordance with Section 1. NOTE 5—Use of the sodium sulfate is necessary to prevent water from interfering in the determination. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. To more accurately calculate the?

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 by test. This test method contains procedures that can assist the analyst in breaking such emulsions.

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ASTM D – standard test method by Infrared Determination

If the concentration of the analyte is less than? Calculate the percent recovery of the LCS using the following equation: A number in parentheses indicates the year of last reapproval. Freezing the sample may s7066 the bottle. Keep a record of each dilution for use in If you feel that your comments have not received a fair hearing you should make your views c7066 to the ASTM Committee on Standards, at the address shown below.

The spike must produce a concentration in the spiked sample that is 2 – 5 times the background concentration or 10 f7066 the detection limit of the test method, whichever is greater. However, place the reference cell in the reference beam during all scans. NOTE 4—For infrared instruments having computer capability, data may be obtained automatically or as described in Keep a record of each dilution for determination of the concentration in the sample in Pour the solvent into the separatory funnel, aatm down the sides of the transfer funnel.