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GB/T 35151-2017 English PDF

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GB/T 35151-2017: Determination of total organic carbon in limestone
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Basic data

Standard ID GB/T 35151-2017 (GB/T35151-2017)
Description (Translated English) Determination of total organic carbon in limestone
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q11
Classification of International Standard 91.100.10
Word Count Estimation 14,169
Date of Issue 2017-12-29
Date of Implementation 2018-11-01
Regulation (derived from) National Standards Bulletin 2017 No. 32
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 35151-2017: Determination of total organic carbon in limestone

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Determination of total organic carbon in limestone ICS 91.100.10 Q11 National Standards of People's Republic of China Determination of total organic carbon in limestone 2017-12-29 Posted 2018-11-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 3 test the basic requirements 1 4 Reagents and materials 1 5 instruments and equipment 3 Preparation of 6 samples 4 7 Wet Oxidation --- Gravimetric Analysis (Standard Method) 4 8 high temperature furnace oxidation --- gravimetric method (alternative method) 6 9 high temperature furnace oxidation --- Infrared Analysis (alternative method) 8 10 Repeatability and reproducibility limits 10

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard proposed by the China Building Materials Federation. This standard by the National Cement Standardization Technical Committee (SAC/TC184) centralized. This standard is drafted by China Building Materials Inspection and Certification Group Co., Ltd., China Building Materials Inspection and Certification Group Anhui Co., Ltd. Division, Meizhou City, Guangdong Province Metrology and Quality Supervision and Inspection Institute, China United Cement Group Co., Ltd., China Building Materials Research Institute, the State Cement Quality Supervision and Inspection Center, the State Energy Building Materials Quality Supervision and Inspection Center (Hubei), Zaozhuang Zhonglian Cement Co., Ltd. The main drafters of this standard. Wang Wei, Zhang Qinghua, Wang Ruihai, Liang Huichao, Wang Qi, Zhang Yonggui, Zhang Shumin, Huang Ding policy, Yuan Liangguo, Zhou Shengyin, Liu Jinzhu, Cui Jinhua, Cui Jian, Dai Ping, Lu Juanjuan, Wang Yalan, Guo Meng, Liu Yamin, Hong Runli, Liu Yanwei, Lucia. Determination of total organic carbon in limestone

1 Scope

This standard specifies the three methods of quantitative determination of total organic carbon in limestone. This standard applies to the determination of total organic carbon in calcareous materials such as limestone.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2007.1 bulk mineral products sampling, sample preparation General manual sampling method GB/T 6682 analytical laboratory water specifications and test methods

3 test the basic requirements

3.1 The number of tests and requirements The number of tests for each test is defined as two and the absolute difference between the two tests is within the limit of repeatability (see Chapter 10) The average of the results indicates the measurement result. 3.2 Quality and result representation Mass units with "grams (g)", accurate to 0.0001g. Unless otherwise stated, the analytical results are expressed in% by mass and the analytical results are expressed in% to two decimal places. 3.3 blank test The test results obtained were corrected by not adding the test sample, following the same analytical procedure and using the same reagent amount.

4 Reagents and materials

4.1 General Reagents used should be no lower than analytical grade, unless otherwise stated. The reagent used for calibration should be the reference reagent. The water used should not be less than GB/T 6682 provisions of the three water requirements. The density of commercially available concentrated liquid reagents listed in this standard refers to the density (ρ) of 20 ° C in grams per cubic centimeter (g/cm3). In chemical analysis, the acid used, who did not note concentration refers to the commercially available concentrated acid. Reagent dilution is expressed in terms of volume ratio, for example, hydrochloric acid (1 2) indicates that 1 part by volume of concentrated hydrochloric acid is mixed with 2 parts by volume of water. 4.2 Hydrochloric acid (HCl) 1.18g/cm3 ~ 1.19g/cm3, the mass fraction of 36% to 38%.

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