GB/T 35664-2017 English PDF

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GB/T 35664-2017: Determination of ammonium in the wet precipitation -- Ion chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 35664-2017	279	Add to Cart	3 days	Determination of ammonium in the wet precipitation -- Ion chromatography	Valid

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Basic data

Standard ID: GB/T 35664-2017 (GB/T35664-2017)
Description (Translated English): Determination of ammonium in the wet precipitation -- Ion chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A47
Classification of International Standard: 07.060
Word Count Estimation: 14,138
Date of Issue: 2017-12-29
Date of Implementation: 2018-07-01
Regulation (derived from): National Standards Bulletin 2017 No. 32
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 35664-2017: Determination of ammonium in the wet precipitation -- Ion chromatography

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Determination of ammonium in the wet precipitation - Ion chromatography ICS 07.060 A47 National Standards of People's Republic of China Determination of ammonium in atmospheric precipitation - Ion chromatography 2017-12-29 Posted 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 measurement principle 1 5 reagents 1 5.1 Deionized water 5.2 standard solution 2 5.3 test solution 2 5.4 Eluent 2 5.5 Regeneration solution 2 6 instruments and utensils 2 6.1 Ion Chromatography 2 6.2 Vessel 2 7 sample collection and preservation 3 8 Measurement Step 3 8.1 Preheat the instrument 3 8.2 calibration curve production 3 8.3 Precipitation Sample Analysis 3 8.4 Analysis of quality inspection 3 Analysis results 4 10 Analysis Quality Control and Assessment 4 10.1 Basic Requirements 4 10.2 Stability Test 4 10.3 External standard measurement 5 10.4 Precision Assessment 5 10.5 Accuracy Assessment 5 10.6 Spike Recovery Evaluation 5 10.7 Blind test 5 10.8 Dilution Assessment 5 10.9 Evaluation Report 5 Appendix A (Normative) Interference and elimination 6 Appendix B (informative) ammonium ion analysis uncertainty assessment results report 7 Reference 9

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Meteorological Administration. This standard by the National Climate and Climate Change Standardization Technical Committee Atmospheric Composition Observation and Warning Service Technical Committee (SAC / TC540/SC1) centralized. This standard drafting unit. China Meteorological Administration, Meteorological Bureau of China Meteorological Bureau. The main drafters of this standard. Xu Xiaobin, Tang Jie, Yu Xiaolan, Cheng Hongbing.

Introduction

Ammonium is an important component of precipitation, and its concentration is an important indicator of acid rain and nitrogen deposition. The precipitation of ammonium ion in the atmosphere Measurement often used spectrophotometry or ion chromatography. This standard is formulated to regulate the concentration of ammonium ion in atmospheric precipitation by ion chromatography. Determination of ammonium in atmospheric precipitation - Ion chromatography

1 Scope

This standard specifies the use of ion chromatography to measure atmospheric ammonium ion concentration measurement principle, reagents, apparatus and utensils, sample mining Collection and preservation, measurement procedures, analysis results, analysis of quality control and evaluation. This standard applies to the determination of ammonium ion concentration in atmospheric precipitation samples.

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. GB/T 13580.2 collection and preservation of atmospheric precipitation samples General principles of JY/T 020 ion chromatography

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Standard stock solution stockstandardsolution Concentrations are known and can be suitable for a long time (greater than or equal to 1 month) storage and access solution. 3.2 Test solution verificationsolution Used to participate in the analysis along with the sample to test solutions of known concentration for analysis of system stability. 3.3 Eluents eluentsolution The ion-adsorbed ion-exchange column can be rinsed out of the solution. 3.4 Regeneration liquid regenerationsolution The ion exchange column to restore the original surface chemical properties of the solution.

4 measurement principle

Ion chromatography determination of ammonium ions is the use of ion exchange principle to separate the ammonium ions and other cations, using inhibition column eluent The background conductance is then measured using a conductivity detector. According to the standard solution of ammonium ions peak retention time and peak height or peak area, Ammonium ions in the sample for quantitative determination.

5 reagent

5.1 Deionized water Freshly prepared by ion exchange method, filtration and adsorption and the like, and filtered through 0.45μm microporous membrane, the initial conductivity should be less than ......

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