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

Alternatively, using a solvent with non-detectable contamination relative to the sample makes the blank correction unnecessary. L of sample into the sample boat. Other systems may be used as long as precision x7359 shown to be as good as or better than the precision in the method. The concentration of phosphate in the absorbing solutions is used as an internal standard by the Ion Chromatograph.

Decrease the boat drive introduction rate or hold times in the furnace, or both, if coke or soot is observed on the exit end of the combustion atsm.

NOTE 10—The level astn boat cooling required is directly related to the volatility of the sample analyzed. Would you like to subscribe to one or more of our regular scientific publications? NOTE 12—Samples larger than 80? You may delete a document from your Alert Profile at any time. If required a dilution or concentration of the sample can be performed on the sample.

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Please first verify your email before subscribing to alerts. Need more than one copy? L or mg of sample.

Link to Active This link will always route to the current Active version of the standard. Exercise extra care when using? It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. These materials rapidly attack wool and leather.

Its action is insidious since it produces no immediate stinging or burning sensation and damage to the skin may result before its presence is realized.

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

NOTE 4—Calibration standards are typically re-mixed and re-certi? Switching sample boats between each analysis may prove effective, provided sample size is not too large. Post Analysis Steps These features may be used as long as they do not degrade the performance and accuracy of the method.

There the sample is combusted in an oxygen rich pyrohydrolytic environment. The halide and sulfate anions are separated into individual elution bands on the separator column of the IC.

The concentrations in the test specimen must be less than the concentration of the highest standard and greater than the lowest standard used in the calibration. Standards Subsctiption may wstm the perfect solution.

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The net result of larger sample sizes is an increase in sensitivity and precision of the analysis while lowering the absolute detection limit of the CIC system. After each standard concentration has asm combusted, an aliquot of absorbing solution is introduced into the IC for separation and quanti?

NOTE 5—A correction for chemical impurity can be used if deemed necessary. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. This standard is not included in any packages. The results can be used for compliance determinations when acceptable to a regulatory authority using performance based criteria. This procedure can provide greater precision than the volume delivery method, provided a balance with a precision of Eyes are particularly vulnerable to severe damage from asym.

A typical diagram of a CIC system is shown in Fig. This test method can be used to determine total sulfur and halogens in aromatic hydrocarbons and their mixtures.