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GB/T 35106-2017 English PDF

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US$119.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 35106-2017: Determination of unbound humic acid content from mineral source
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 35106-2017	119	Add to Cart	3 days	Determination of unbound humic acid content from mineral source	Valid

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Basic data

Standard ID: GB/T 35106-2017 (GB/T35106-2017)
Description (Translated English): Determination of unbound humic acid content from mineral source
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G20
Classification of International Standard: 65.080
Word Count Estimation: 6,630
Date of Issue: 2017-12-29
Date of Implementation: 2018-07-01
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 35106-2017: Determination of unbound humic acid content from mineral source

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of unbound humic acid content from mineral source ICS 65.080 G20 National Standards of People's Republic of China Determination of free humic acid in mineral source 2017-12-29 Posted 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard proposed by the China Petroleum and Chemical Industry Federation. This standard by the National Fertilizer and Soil Conditioning Standardization Technical Committee (SAC/TC105) centralized. This standard was drafted unit. Ssangyong Humic Acid Co., Ltd., Shanghai Tianke Chemical Testing Co., Ltd., Shenyang Agricultural University, Liaoning Putian Technology Co., Ltd., Liaoning Academy of Agricultural Sciences. The main drafters of this standard. Zhao Ying Bo, Zhang Minghong, Sun Hao Wen, Hao Xiaoli, Jiang Chenyi, Zou Deyi, Tao Xiaodan, Wang Chunhua, Cao Hongyu, Fu Shifeng, Zhou Yanming, Yao Hongwei. Determination of free humic acid in mineral source

1 Scope

This standard specifies the method for the determination of free humic acid content in the source of humic acid minerals. This standard applies to weathered coal, lignite and peat in the determination of free humic acid content, the results of the carbon content.

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. HG/T 2843 chemical analysis of fertilizer products commonly used standard titration solution, standard solution, reagent solution and indicator solution

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Humic acid humic acid Humic substances in the larger molecular weight, with aromatic, aliphatic and a variety of functional groups structural features, soluble in dilute alkali solution, insoluble Acid and water, black or brown black amorphous organic weak acid mixture. 3.2 Mineral source humic acid mineralhumicacids Humus acids extracted from weathered coal, lignite, peat and other organic minerals. 3.3 Free humic acid (alkali soluble acid analysis) unboundhumicacidbyacidprecipitation Humic acid extracted with 1% sodium hydroxide from mineral-derived humic acid and precipitated with acid.

4 test methods

Warning Reagents of potassium dichromate solution with strong oxidizing, sulfuric acid, sulfuric acid solution and sodium hydroxide solution corrosive, related operations Should be carried out under the appropriate safety conditions such as fume hood, test personnel should be properly protected. This standard does not indicate all possible security issues, It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the requirements of the relevant state laws and regulations. The reagents used in this standard, water and solution preparation, in the specifications and preparation methods are not specified, according to HG/T 2843 regulations. 4.1 Method summary The sample is extracted with dilute alkali solution, the obtained extract is precipitated with acid, the material which is soluble under acidic conditions is separated and removed, and then the Lye solution, in strong acid conditions, with potassium dichromate oxidation of the extracted humic acid, excess potassium dichromate with ferrous ammonium sulfate standard solution Titration, based on the consumption of ammonium ferrous sulfate, the result is expressed as free humic acid carbon content. 4.2 Reagents 4.2.1 concentrated sulfuric acid, ρ = 1.84g/mL. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 35106-2017_English be delivered?

Answer: Upon your order, we will start to translate GB/T 35106-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 35106-2017_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 35106-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.