Extraction method of organic sulphur in carbonate rocks with low organic matter content
A technology of organic matter content and carbonate rock, which is applied to the extraction of organic sulfur in carbonate rock and the field of organic sulfur extraction, can solve the problems of inaccurate measurement of organic sulfur content and isotopic composition, and achieves high accuracy and simple operation. , the effect of low execution cost
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[0085] Example
[0086] 1. Acid treatment
[0087] Step a: Weigh 300g of the carbonate rock sample powder that has been ground to 200 mesh, while stirring, pour the carbonate rock sample powder into 600ml of 6N hydrochloric acid, and react at 60°C for 2h to produce The first acid treatment of the carbonate rock sample. When the reaction is over, discard the acid solution.
[0088] Step b: While stirring, pour 800ml of 6N hydrochloric acid into the first acid-treated carbonate rock sample, and react at 60°C for 2h to generate a second acid-treated residual sample. When the reaction is over, discard the acid solution, and use distilled water to wash the remaining solid sample until it is weakly acidic, that is, the pH is 5-7.
[0089] Step c: While stirring, pour the mixture of hydrochloric acid and hydrofluoric acid with a total volume of 700 ml into the second acid treatment residue, and react at 60° C. for 2 hours to generate the third acid treatment residue. And in the mixture, t...
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