GB/T 34500.3-2017 English PDF

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GB/T 34500.3-2017: Chemical analysis methods for rare earth waste residue and wastewater -- Part 3: Determination of weak radioactivity (total activity of α and β)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34500.3-2017	199	Add to Cart	3 days	Chemical analysis methods for rare earth waste residue and wastewater -- Part 3: Determination of weak radioactivity (total activity of α and β)	Valid

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Basic data

Standard ID: GB/T 34500.3-2017 (GB/T34500.3-2017)
Description (Translated English): Chemical analysis methods for rare earth waste residue and wastewater -- Part 3: Determination of weak radioactivity (total activity of �� and ��)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H14
Classification of International Standard: 77.120.99
Word Count Estimation: 10,160
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
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 34500.3-2017: Chemical analysis methods for rare earth waste residue and wastewater -- Part 3: Determination of weak radioactivity (total activity of α and β)

---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.
Chemical analysis methods for rare earth waste residue and waste water - Part 3. Determination of weak radioactivity (total activity of α and β) ICS 77.120.99 H14 National Standards of People's Republic of China Rare earth waste, waste water chemical analysis methods Part 3. Weakly radioactive (total alpha and beta activity) Determination Part 3.Determinationofweakradioactivity (totalactivityofαandβ) 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 34500 "rare earth waste, chemical analysis of waste water" is divided into 5 parts. --- Part 1. Determination of the amount of fluoride ion selective electrode method; --- Part 2. Determination of chemical oxygen demand (COD); --- Part 3. Determination of weak radioactivity (total activity of α and β); --- Part 4. Determination of copper, zinc, lead, chromium, cadmium, barium, cobalt, manganese, nickel, titanium content; Inductively coupled plasma atomic emission spectrometry; --- Part 5. Determination of ammonia nitrogen content. This section GB/T 34500 Part 3. This section drafted in accordance with GB/T 1.1-2009 given rules. This part of the National Rare Earth Standardization Technical Committee (SAC/TC229) and focal point. This part of the drafting unit.Qian East Rare Earth Group Co., Ltd. (Ganzhou Ecclestone Detection Technology Co., Ltd.), China Nonferrous Guilin Minerals Institute of Geology Co., Ltd., Jiangxi University of Science and Technology, Jiangyin Jiahua New Materials Resources Ltd.. The main drafters of this section.Win Bin, Yao Nanhong, Zou Shijie, Shi Yihua, dry line, Yang Youming, Zheng Xingqin. Rare earth waste, waste water chemical analysis methods Part 3. Weakly radioactive (total alpha and beta activity) Determination

1 Scope

GB/T 34500 provisions of this part of the mining, mineral processing, smelting rare earth waste, the determination of total activity of α and β in wastewater method. This section applies to mining, mineral processing, smelting rare earth waste generated, the determination of total activity of α and β in wastewater. Waste residue and waste water into The lower limit of determination after the residue .0.1Bq/g.

2 method principle

The water sample was acidified to be stable, concentrated by evaporation, converted to sulfate, and then burned at 350 ° C. Rare earth waste or waste water that will be accurately weighed After the residue was burned, the solid powder sample was transferred to a sample tray, and its α, β count was measured with an α, β weak radioactivity meter to calculate the total (α β) activity.

3 Reagents and materials

3.1 241Am standard source (αs10.2Bq/g). 3.2 Potassium chloride standard source (βs14.4Bq/g). 3.3 Sulfuric acid (p = 1.84 g/mL). 3.4 Nitric acid (p = 1.40 g/mL). 3.5 Nitric acid (1 1).

4 equipment

4.1 α, β weak radioactive measuring instrument, α detection efficiency of not less than 60%, β detection efficiency of not less than 30%. 4.2 Sample Tray. Stainless steel trays with trays, sample capacity of not less than 250mg/cm2. 4.3 stainless steel sampler should be matched with the sample tray (4.2). 4.4 analytical balance, a sense of volume 0.1mg. 4.5 muffle furnace.

5 sample

Rare Earth Wastewater. The water samples were collected in polyethylene bottles and immediately analyzed. If not analyzed as soon as possible, add nitric acid (3.4) to adjust pH≤2,4 ℃ ± 2 ℃ can be stored for 1 month, fully mixed before analysis of water samples. Rare earth waste should be sealed. ......

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