ASTM D7066 PDF

0 Comments

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.

Author: Gasida Nizilkree
Country: Ghana
Language: English (Spanish)
Genre: Software
Published (Last): 20 November 2016
Pages: 475
PDF File Size: 12.28 Mb
ePub File Size: 16.48 Mb
ISBN: 738-4-64883-566-8
Downloads: 72633
Price: Free* [*Free Regsitration Required]
Uploader: Voodoorisar

ASTM D7066

Those not adsorbed are measured as nonpolar material. 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. Powdered sodium sulfate should not be used because water may cause it to solidify. Keep a record of each dilution for use in Included in this estimation of oil and grease are any other compounds soluble in the solvent. If the sample is to be shipped by commercial carrier, U.

Calculate the percent recovery of the LCS using the following equation: The spiking solution may be used as an IRM. The amount of acid required will be dependent upon the pH and buffer capacity of the sample at the time of collection.

Due to the cost of performing the analysis, each matrix tested contained only one set of Youden pair concentrations. The matrix and chemistry of the solution should be equivalent to the solution used in the collaborative study.

Remove the solid with a clean spatula, and add about 1 g of fresh sodium sulfate to the? Do not allow the sample to over? For double-beam operation, either block the light beam from the reference cell containing solvent or remove the reference cell from the instrument during the intervals between scans in order to protect the solvent from unnecessary warming. Collect an additional 1 or 2 sample aliquots for the matrix spike and matrix spike duplicate Section However, this amount may be insufficient for some samples.

  DUPLICATION INTESTINALE PDF

D — 04 It is the responsibility of 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.

ASTM D – standard test method by Infrared Determination

To more accurately calculate the? 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 same cell or matched cells should be used throughout the calibration. Mix equal volumes of concentrated HCl and water 8.

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. Pour the solvent into the separatory funnel, rinsing down the sides of the transfer funnel. Calculate the calibration factor CFx in each of the?

Be sure to record the concentration added to the LCS. Similarly, this test method de? NOTE 8—The amount of silica gel needed has been estimated at 3 g for every mg of polar material. Drain and clean the sample cell. Also, in relation to infrared?

  EL MISTERIO DE MARIE ROGET PDF

However, all data must be obtained consistently by one means or the other, not a combination of the two. L of isooctane by the water volume in liters. In a few cases, the composition of the oil and grease in a sample will be known. To assure the most accurate concentrations, use the smallest serological pipet or syringe for measurements. Weighing will be more accurate.

Rinse the tip of the separatory funnel, Na2SO4,? If there is doubt about whether the amount of silica gel is adequate, the amount needed should be determined by test.

Either the average calibration factor CFm or the calibration curve is used, not both. Cool cell to room temperature before use. However, in order to obtain consistent results between sample sets and between laboratories with different wastewater matrices, d7066 with the known oil and grease in a sample should not be used in this method.

After running, drain, and clean the sample cell. L for solution density of 0. The replicates may be interspersed with samples. D — 04 any sample preservation and pretreatment steps. Prerinse the sample bottle and cap with the solvent prior to sample collection. The value obtained must fall within the control limits speci? Use the entire sample because removing a portion would not apportion the oil and grease that adheres to the bottle surfaces.