ASTM D7359 PDF

Metrohm’s CIC does it: ASTM D Standard Test Method for Total Fluorine, Chlorine and Sulfur in Aromatic Hydrocarbons and Their. Significance and use according to ASTM D – 14a. ASTM D – Standard Test Method for Total Fluorine, Chlorine and Sulfur in Aromatic Hydrocarbons and Their Mixtures by Oxidative Pyrohydrolytic.

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Reagents and Materials 7. If required a dilution or concentration of the sample can be performed on the sample.

Metrohm: ASTM D7359 – 14a : Total Fluorine, Chlorine and Sulfur in Aromatic Hydrocarbons

NOTE 5—A correction for chemical impurity can be used if deemed necessary. NOTE 4—Calibration standards are typically re-mixed and re-certi? Alternatively, using a solvent with non-detectable contamination relative to the sample makes the blank correction unnecessary. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Historical Version s – view previous versions of standard.

Correction for contaminate levels of elements of interest must be corrected for solvent blank. The sample may also be weighed directly into a sample boat and placed into the boat drive system.

ASTM D – 14a : Total Fluorine, Chlorine and Sulfur in Aromatic Hydrocarbons

This test method can be used to determine total sulfur and halogens in aromatic hydrocarbons and their mixtures. The Gas Adsorption Unit is interfaced to the Ion Chromatograph and injects an aliquot of the adsorption solution into the Ion Chromatograph after the sample is combusted d739 the by-products of combustion are absorbed.

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D — 08 Standard Test Method for This standard is issued under the? Multiple sequential injections shall be completed d359 a stable background is attained. Summary of Test Method 3. NOTE 7—Injection of a constant or similar sample size for all materials analyzed promotes consistent combustion conditions.

ASTM D7359-08 Standard Test by Combustion Ion Chromatography-CIC

NOTE 12—Samples larger than 80? The gaseous by-products of the combusted sample are trapped in an absorption medium where the hydrogen halides HX formed during combustion disassociate into their respective ions, Xwhile the sulfur oxides SOX formed are further oxidized to SO in the presence of an oxidizing agent. Other systems may be used as long as precision is shown to be as good as or better than the precision in the method.

The results can be used for compliance determinations when acceptable to wstm regulatory authority using performance based criteria. Link to Active This link will always route to the current Active version of the standard.

Run a check standard to determine if the instrument needs to be recalibrated. Thermoelectric coolers peltier or recirculating refrigerated liquid devices are strongly recommended.

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Dilute to volume with the selected solvent described in 7.

Preparation of Apparatus Calibration standards can have astn useful life of about 6 to 12 months if properly stored in a cool, dark place. The results can be used for compliance determinations when acceptable to a regulatory authority using performance based criteria.

Weigh the syringe before and after injection into the sample boat to determine the amount of sample injected. This is a temporary precision statement and reproducibility will be determined within? Calibration and Standardization ASTM D – This test method can be used to determine total sulfur and halogens aromatic hydrocarbon matrices, in?

NOTE 10—The level of boat cooling required is directly related to the volatility of the sample analyzed.

If the document is revised or amended, you will be notified by email. Other numbers of concentration of calibration standards can be used as long as the accuracy and precision of the method is not degraded. These features may satm used as long as they do not degrade the performance and accuracy of the method. A number in parentheses indicates the year of last reapproval.