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GB/T 34500.1-2017: Chemical analysis methods for rare earth residue and wastewater -- Part 1: Determination of fluorine content -- Ion selective electrode analysis
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Chemical analysis methods for rare earth residue and wastewater -- Part 1: Determination of fluorine content -- Ion selective electrode analysis
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GB/T 34500.1-2017
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Basic data | Standard ID | GB/T 34500.1-2017 (GB/T34500.1-2017) | | Description (Translated English) | Chemical analysis methods for rare earth residue and wastewater -- Part 1: Determination of fluorine content -- Ion selective electrode analysis | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 10,173 | | 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 34500.1-2017: Chemical analysis methods for rare earth residue and wastewater -- Part 1: Determination of fluorine content -- Ion selective electrode analysis
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Chemical analysis methods for rare earth residue and waste water - Part 1. Determination of fluorine content - Ion selective electrode analysis
ICS 77.120.99
H14
National Standards of People's Republic of China
Rare earth waste, waste water chemical analysis methods
Part 1. Determination of fluoride ion content
Ion selective electrode method
Part 1.Determinationoffluorinecontent-
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 1.
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. Baotou Rare Earth Research Institute, Qigong Rare Earth Group Co., Ltd. (Ganzhou Ai Rui Detection Technology Co., Ltd.)
GB (Beijing) Inspection and Certification Co., Ltd., Ganzhou Chenguang Rare Earth New Materials Co., Ltd., Guangdong Province Industry Analysis Testing Center, China has
Color Guilin Institute of Mineral Geology Co., Ltd., China North Rare Earth (Group) Co., Ltd. high technology, national tungsten and rare earth product quality supervision
Inspection center.
The main drafters of this section. Yang Xuezheng, Yao Nanhong, Gao Lihong, Zhu Ni, Long Xudong, Wei Hua, Yu Yahui, Wang Li, Chen Yan, Chen Yingchun, Xie Yali,
Huang Puying, Zhou deposit, Wang Jiamin, Ling Honghuan.
Rare earth waste, waste water chemical analysis methods
Part 1. Determination of fluoride ion content
Ion selective electrode method
1 Scope
GB/T 34500 provisions of this part of the mining, mineral processing, smelting of rare earth waste leachate and waste water fluoride ion determination.
This section applies to mining, mineral processing, smelting of rare earth waste leachate and waste water fluoride ion determination. Measurement range .1.00mg/L ~
2000.0 mg/L.
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.
Solid waste extraction toxicity Toxicity method HNO3 method
HJ493 water quality sample preservation and management of technical regulations
3 method principle
Rare earth waste using sulfuric acid - nitric acid mixed extractant to liquid-solid ratio of 10. 1 (L/kg) extraction. Waste residue leachate and waste water by nitric acid, high chlorine
Acid decomposition, at 130 ℃ ~ 140 ℃ heating distillation to separate fluorine and interference elements. In pH≈6.0 solution, with fluoride ion selective electrode
The indicator electrode and the saturated calomel electrode are used as reference electrodes, and the equilibrium electrode potential between the two electrodes is measured to obtain the fluoride ion content in the waste liquid.
4 reagent
4.1 Sodium fluoride, excellent grade pure.
4.2 sodium citrate, excellent grade pure.
4.3 sodium nitrate, excellent grade pure.
4.4 perchloric acid (ρ = 1.76g/mL), excellent grade pure.
4.5 sulfuric acid (ρ = 1.84g/mL), excellent grade pure.
4.6 nitric acid (ρ = 1.42g/mL), excellent grade pure.
4.7 hydrochloric acid (ρ = 1.14g/mL), excellent grade pure.
4.8 Sodium hydroxide solution (400 g/L).
4.9 Sodium hydroxide solution (10 g/L).
4.10 Sulfuric acid (1 1).
4.11 nitric acid (1 1).
4.12 Hydrochloric acid (1 1).
4.13 sulfuric acid, nitric acid mixture.With stirring, sulfuric acid (4.10) and nitric acid (4.11) by volume ratio 1.5. 1 mix, stand-by.
4.14 leaching agent sulfuric acid, nitric acid mixture (4.13) was added to the water (1L water about 2 drops of mixture), adjusting the acidity of pH ≈ 3.20 ± 0.05.
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