GB/T 31776-2015 PDF English
US$90.00 · In stock · Download in 9 secondsGB/T 31776-2015: Determination Method of Methanol Content in Methanol Gasoline for Motor Vehicles Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 31776-2015 | English | 90 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Determination Method of Methanol Content in Methanol Gasoline for Motor Vehicles
| Valid |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 31776-2015
GB/T 31776-2015: Determination Method of Methanol Content in Methanol Gasoline for Motor Vehicles---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT31776-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 75.160.20
G 60
Determination Method of Methanol Content in
Methanol Gasoline for Motor Vehicles
Issued on: JULY 3, 2015
Implemented on: OCTOBER 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Principle ... 5
5 Apparatus ... 5
6 Reagents and Materials ... 5
7 Sampling ... 6
8 Test Procedures ... 6
9 Result Calculation ... 9
10 Allowable Difference ... 10
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard was proposed by and under the jurisdiction of National
Technical Committee for Standardization of Methanol-Ether Fuel (SAC/TC 414).
Drafting organizations of this Standard. National Coal and Coal Chemical Product
Quality Supervision and Inspection Center, Shanxi Wharton Co., Ltd., Shanxi Alcohol
and Ether Clean Fuel Technical Center, Shaanxi Yanchang Zhongli New Energy Co.,
Ltd., Beijing Xiongtaoweiye Energy Technology Co., Ltd., Kailuan Energy Chemical
Company Limited, and Zhongrunyou New Energy Co., Ltd..
Chief drafting staffs of this Standard. Li Yanru, Wu Yuequ, Xu Ying, Chang Yonglong,
Li Jingsheng, Wang Yongmiao, Cui Jianfang, Wang Julin, Zhang Fading, and Fan
Shouwei.
Determination Method of Methanol Content in
Methanol Gasoline for Motor Vehicles
Warning. personnel using this Standard shall have hands-on experience in
formal laboratory. This Standard doesn’t address all possible safety issues.
Users shall assume the responsibilities to take appropriate safety and
preventative measures, and ensure the compliance with the relevant national
regulations.
1 Scope
This Standard specifies the terms and definitions, principle, apparatus, reagents and
materials, sampling, test procedures, result calculation and allowable differences for
the determination method of methanol content in methanol gasoline for motor vehicles.
This Standard is not applicable to the determination of methanol content (volume
fraction) in the ethanol-free methanol gasoline for motor vehicles.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 4756 Method for Manual Sampling of Petroleum Liquids
GB/T 9722 Chemical Reagent - General Rules for the Gas Chromatography
GB 17930 Gasoline for Motor Vehicles
GB/T 22030 Blend stocks of Ethanol Gasoline for Motor Vehicles
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 Component oil
6.2 Absolute ethanol. chromatographically pure.
6.3 Component oil. conform to GB 17930 or GB/T 22030.
6.4 Carrier gas. nitrogen with purity no less than 99.99% (volume fraction).
6.5 Fuel gas. hydrogen with purity no less than 99.99% (volume fraction).
6.6 Air. air generator.
6.7 Separator-funnel. pear-shaped, 250mL.
6.8 Pipette. 50mL, 20mL, 10mL, 5mL, 1mL.
6.9 Measuring pipette. 10mL, sub-scale value 0.1mL.
6.10 Measuring pipette. 1mL, sub-scale value 0.01mL.
6.11 Preparation of chromatography column. inject the 60 mesh ~80 mesh Porapak
T packed column into the chromatography column with length 1m, and inner diameter
3mm; gently shake during the adding process, so that the filling materials can be filled
tightly; both ends of the column shall reserve 2cm, where the glass wool shall be filled,
so that ensure the filling materials can’t overflow.
Prior to use, conduct the aging operation against the column when the column box
temperature is at 180°C till the instrument baseline is stable.
7 Sampling
7.1 Sampling as per the procedure stipulated in GB/T 4765, take 2L of sample for
inspection and retention sample use.
7.2 Sample shall be stored at 0°C~5°C.
7.3 Before analysis, shake the sample thoroughly to see if the sample has significant
phase separation. If so, discard the sample; re-sampling is required.
8 Test Procedures
8.1 Sample preparation
When analyzing, the sample, internal standard substance (6.2), distilled water and the
container weighing the sample are required to be equilibrated at certain temperature.
8.2 Chromatographic analysis
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 31776-2015 be delivered?Answer: The full copy PDF of English version of GB/T 31776-2015 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 31776-2015_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 31776-2015_English will be deemed to be sold to your employer/organization who actually paid 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+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 31776-2015 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. How to buy and download a true PDF of English version of GB/T 31776-2015?A step-by-step guide to download PDF of GB/T 31776-2015_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 31776-2015".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|