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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The pyrohydrolytic combustion tube must astmm of ample volume, and have a heated zone with quartz wool or other suitable medium providing sufficient surface area so that the complete pyrohydrolytic combustion of the sample is ensured. No other units of measurement are included in this standard. The net result of larger sample sizes is an increase in awtm and precision of the analysis while lowering the absolute detection limit of the CIC system.
Target Standard Compound s 7. Multiple sequential injections shall be completed until a stable background is attained. The results can be used for compliance determinations when acceptable to a regulatory d73599 using performance based criteria.
Download your relevant applications. The concentration of phosphate in the absorbing solutions is used as an internal standard by the Ion Chromatograph.
The sample may also be weighed directly into a sample boat and placed into the boat drive system.
However, it is the responsibility of the analyst to verify the solubility of the sample in the solvent and that the diluted sample results conform to the precision and accuracy of the method. Combustion IC Combustion IC combines pyrohydrolytic sample combustion and absorption of the evolving combustion gases in an oxidizing aqueous solution that is then fed into an ion chromatograph for analysis of halides and sulfur as sulfate.
Consult the manufacturer for details in setup and operation. NOTE 5—A correction for chemical impurity can be used if deemed necessary.
Metrohm: ASTM D7359 – 14a : Total Fluorine, Chlorine and Sulfur in Aromatic Hydrocarbons
No other units of measurement are included in this standard. 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. Add to Alert PDF.
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. Weigh the syringe before and after injection into the sample boat to determine the amount of sample zstm. Work Item s – proposed revisions of this standard. We have no amendments or corrections for this standard.
NOTE 12—Samples larger than 80? The inlet sstm shall allow for the stepwise introduction and advancement of a sample boat into the heated zone and shall have a side arm for the introduction of the humidi?
ASTM D – 14a : Total Fluorine, Chlorine and Sulfur in Aromatic Hydrocarbons
ASTM D – The use of a thermoelectrically cooled sample introduction area may be required to prevent premature volatilization of the sample before entering the combustion area. Eyes are particularly vulnerable to severe damage from alkalis. A typical diagram of a Asym system is shown in Fig.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, astj a networked server. Switching sample boats between each analysis may prove effective, provided sample size is not too large.
The instrument must be clean and properly aastm to address potential sources of contamination, or carryover, or both. Delivery of hydronium ions for suppression by electrolysis of recycled eluent through a cation exchange membrane. Eyes are particularly vulnerable to severe damage. 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.
Other systems may be used as long as precision is shown to be as good as or better than the precision in the method. Subscription pricing is determined by: S with a linearity correlation coefficient of 0. Please first verify your email before subscribing to alerts. NOTE 4—Calibration standards are typically re-mixed and re-certi? The standards, therefore, must be analyzed by the ion chromatograph in the same manner as the sample solutions.
A number in parentheses indicates the year of last reapproval. However, it is the responsibility of the analyst to verify the solubility of the sample in the solvent and that the diluted sample results conform to the precision and accuracy of the method. Manage your subscriptions Newsletters. This test method can be used to determine total sulfur and halogens in aromatic hydrocarbons and their mixtures. Mr Mrs Ms Dr Prof.
ASTM D7359-08 Standard Test by Combustion Ion Chromatography-CIC
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Metrohm Australia – Metrohm New Zealand. This procedure can provide greater precision than the volume delivery method, provided a balance with a precision of This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?