EJ/T 20165-2018 in English

VALID

Determination of fluorine chloride and bromine in reprocessed uranium trioxide powder by pyrohydrolysis ion-chromatography method

Issued on:2018-01-18
Implemented on:2018-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $120.00
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Standard No:	EJ/T 20165-2018
Document status:	VALID
Title in English:	Determination of fluorine chloride and bromine in reprocessed uranium trioxide powder by pyrohydrolysis ion-chromatography method
Title in Chinese:	后处理三氧化铀粉末中氟、氯、溴的测定高温水解-离子色谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-01-18
Implemented on:	2018-05-01
Professional Classification:	EJ-Nuclear Industry
Related Topics:	Boron tribromide post-treatment ion chromatography Ion Chromatography of Chloride Ions in Water high pressure ion chromatography high pressure ion chromatography Ion chromatogram peaks too high Boron tribromide post-treatment Determination of Chloride in Water by Ion Chromatography Uranium trioxide How to deal with a small amount of boron tribromide Determination method of uranium ion Phosphorus tribromide post-treatment bromide ion degradation Liquid bromine post-bromination treatment high temperature ion Boron bromide post-treatment Titration method for determination of bromide ion in water Chlorine High Temperature Oxidation Combustion Method and Ion Chromatography Detection Method Phosphorus tribromide post-treatment Post-treatment of boron tribromide Ion Chromatography Bromide High Determination of Chloride and Bromide by Ion Chromatography The color of bromine chloride Uranium dioxide and chloride ions Determination of Fluoride Ion in Water Soluble Chemicals - Ion Chromatography Water Bromide Ion Chromatography How to post-treat boron tribromide Trichlorosilane post-treatment method Water Quality Tertiary Chloride Ion ion chromatographyhigh pressure Gas chromatographic post-treatment How to reprocess boron tribromide Determination of Bromine by Ion Chromatography Fluorine in water - fluoride ion How to deal with the bromination reaction high temperature ion chromatography Detection of Chloride Ion in Ion Chromatography How to post-treat boron tribromide ion chromatographyhigh pressure Post-processing of methyl bromide Liquid bromine post-bromination treatment Hydrochloride Ion Chromatography Fluoride Ion Chromatography in Water Three kinds of water chloride ion Hydrochloride Ion Chromatography Liquid bromine post-treatment hyperspectral year Phosphorus tribromide hydrolysis How to dispose of phosphorus tribromide Liquid bromine post-treatment Bromide Ion Chromatography in Water Post-treatment of liquid bromine Bromine water treatment agent Spectral Analysis Post-Processing Uranium Chromatography Chlorine-containing bromine mass spectrum Chromatographic method How to deal with phosphorus tribromide Use of Ion Chromatography Determination of Bromine by Ion Chromatography The use and aftertreatment of liquid bromine ej 2 Chromatography Uranium tribromide Difluorobromide ion Chlorofluoride Ion Chromatography Chloride and Bromide in Ion Chromatography How to post-treat phosphorus tribromide Post-treatment of liquid bromine Conditions for hydrolysis of benzyl bromide Boron tribromide post-treatment method When measuring fluoride ion in water ion chromatography' Determination of Chloride Ions in Water by Ion Chromatography Determination of anion fluorine and chlorine Detection of Silica in Water Ion Chromatography How to deal with high mass spectrum baseline China water treatment magnetic powder What method is used to detect chloride ions in silicon nitride powder? Fluoride ion determination in wastewater PCB pretreatment method ion chromatography Methods for testing ferric ions in high schools Common pretreatment methods for ion chromatography Uranium ion purification standard value Chromatographic column passivation treatment method Determination of fluoride ions in water samples How to deal with chromatographic column aging Ion chromatography fluoride pretreatment method ej/t 20232-2018 Commonly used pretreatment methods for ion chromatography Boron trichloride treatment method Determination of fluorine and chlorine by ion chromatography

Introduction

Technical Background of the Standard

This standard addresses the need for detecting halogen impurities in uranium trioxide (UO₃) powder produced during nuclear fuel reprocessing, filling a technical gap in the domestic nuclear materials analysis field. With increasing requirements for nuclear fuel cycle processes, controlling halogen content has become a key indicator affecting fuel element performance.

Detailed explanation of the principle of the method

Steps	Temperature conditions	Chemical reaction	Instrument configuration
High temperature hydrolysis	1050±50℃	MX + H₂O → HX↑ + MO_x	Tubular furnace+quartz reaction system
Ion separation	Room temperature	Ion exchange chromatography	Ion chromatograph+AS11-HC column

Typical application case: A post-processing plant used this method to detect and found that the chlorine content of a batch of UO₃ powder exceeded the standard (12.8μg/g). Tracing back, it was found that it was caused by the degradation products of the extractant. After process adjustment, the content was reduced to <5μg/g.

Key Operation Points

Hydrolysis temperature control: Must be maintained within the range of 1050℃±20℃. Too low a temperature will result in incomplete hydrolysis, and too high a temperature may damage the quartz tube.
Carrier gas flow adjustment: The argon flow rate should be maintained at 1-2 bubbles/second to ensure effective carrier of hydrogen halide gas.
Absorption liquid treatment: The receiving time is strictly controlled within 2±0.1h, and the final volume should reach 20±2mL.

Technical Advantages Comparison

Parameters	High-temperature hydrolysis-IC method	Traditional distillation method	Neutron activation method
Analysis time (h)	3.5	6.0	8.0
Simultaneous analysis of multiple elements	Yes	No	Partial

Implementation suggestions

1. Quality control measures: Each batch of samples should be analyzed simultaneously with standard substances (such as GBW04205 uranium oxide standard) and blank samples

2. Equipment Maintenance: Quartz tubes should be cleaned with 10% HF solution monthly, and ion chromatography columns should be regenerated with 0.1 mol/L NaOH weekly.

3. Safety Protection: The operating area should be equipped with an HF gas alarm, and experimenters must wear gas masks and acid-resistant gloves.

More samples: JGJ 94-2008 JC/T 2453-2018 GB 50021-2001(2009)

Sample only — not a preview of EJ/T 20165-2018

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