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Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the criteria of determination of total organic carbon in sedimentary rocks (GB/T 19145—2003), the experimental conditions such as grinding particle size, the acid treatment concentration and the time of the acid treatment in the process of determining the organic carbon were improved, and the time of batch pretreatment of the samples was reduced from the original 36 hours or more to about 22 hours (regardless the time of grinding the samples). The steps of the improved acid treatment process were described in detail, such as the steps of dissolving the sample, the way of washing the sample and etc. Finally, the samples were pretreated with the acid treatment method in an improved acid treatment method and a measurement standard for total organic carbon in sedimentary rocks (GB/T 19145—2003), and the total organic carbon (TOC) values between the samples were in accordance with the repeatability requirements of the national standard. The probability of sampling error (P value) is larger than 0.05, indicating that there is no significant difference between the two methods. [ABSTRACT FROM AUTHOR]