GB/T 14571.5-2016 in English

VALID

Test method of monoethylene glycol for industrial use―Part 5:Determination of chloride ion―Ion chromatography

Issued on:2016-10-13
Implemented on:2017-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 14571.5-2016
Document status:	VALID
Title in English:	Test method of monoethylene glycol for industrial use―Part 5:Determination of chloride ion―Ion chromatography
Title in Chinese:	工业用乙二醇试验方法第5部分：氯离子的测定离子色谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2016-10-13
Implemented on:	2017-05-01
ICS Classification:	71.080.60-Alcohols. Ethers
Chinese Classification:	G16-Basic organic chemicals
Professional Classification:	GB-National Standard
Related Keywords:	chloride ion content ion chromatography gb/t14571.1-2016 industrial ethylene glycol determination application detection method gb/t14571.5-2016 industrial ethylene glycol determination chloride ion ― ion chromatography introduction interpretation industrial ethylene glycol ion chromatography
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《GB/T 14571.5-2016工业用乙二醇试验方法第5部分：氯离子的测定离子色谱法》由TC63（全国化学标准化技术委员会）归口，TC63SC4（全国化学标准化技术委员会石油化学分会）执行，主管部门为中国石油和化学工业联合会。

Introduction

Interpretation of Part 5 of GB/T14571.5-2016 Test method for industrial ethylene glycol

This standard specifies the method for determining the chloride ion content in industrial ethylene glycol using ion chromatography, which is applicable to chloride ion detection in the concentration range of 0.01 mg/kg ~1.0 mg/kg.

Standard Name	Determination Object	Scope of Application	Detection Method
GB/T14571.5-2016	Industrial Ethylene Glycol	Determination of Chloride Ion Content	Ion Chromatography
GB/T14571.1-2016	Industrial Ethylene Glycol	Determination of Acidity	Titration

Method Overview and Key Points

Ion chromatography is used. Sodium carbonate/sodium bicarbonate or potassium hydroxide solution is delivered as eluent through an eluent pump. Chloride ions and other anions are separated by an anion exchange column and detected by a conductivity detector.

Requirements for Reagents and Instruments

Water:GB/T6682 Grade 1 water, degassed.
Sodium chloride:Working reference grade, used to prepare standard stock solution.
Potassium hydroxide:Ultra-pure, used to prepare eluent.
Ion chromatograph: includes eluent pump, six-way valve, sample quantitative loop, suppressor and conductivity detector and other key components.

Analysis steps in detail

According to the standard requirements, first prepare the standard curve and use the prepared chloride ion standard stock solution to configure the concentration gradient. Then, measure the sample under the same test conditions and calculate the chloride ion concentration by the peak area.

Precision and Quality Control

Chloride ion content (mg/kg)	Repeatability limit (r, mg/kg)	Reproducibility limit (R, mg/kg)
0.01 ≤ X < 0.1	0.01	0.02
0.1 ≤ X ≤ 1.0	0.03	0.05

Implementation Suggestions

In actual operation, reagent preparation, instrument calibration and sample pretreatment should be carried out strictly in accordance with standard requirements. At the same time, quality control samples should be used regularly to verify the accuracy of experimental results, and detailed records should be kept.

More samples: JC/T 2453-2018 DL/T 5154-2012 DL/T 368-2010

Sample only — not a preview of GB/T 14571.5-2016

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