GB/T 35665-2017 English PDF

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GB/T 35665-2017: Determination of formate and acetate in the wet precipitation -- Ion chromatography
Status: Valid

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Basic data

Standard ID: GB/T 35665-2017 (GB/T35665-2017)
Description (Translated English): Determination of formate and acetate 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: 14,133
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 35665-2017: Determination of formate and acetate in the wet precipitation -- Ion chromatography

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Determination of formate and acetate in the wet precipitation - Ion chromatography ICS 07.060 A47 National Standards of People's Republic of China Determination of Formate and Acetate 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 2 5.1 Deionized water 2 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 Precision Assessment 5 10.4 Accuracy Assessment 5 10.5 Spike recovery rate assessment 5 10.6 Blind test 5 10.7 Dilution Assessment 5 10.8 Evaluation Report 5 Appendix A (Normative) Interference and elimination 6 Appendix B (Informative) Formate and acetate ion analysis uncertainty of the results of the assessment 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, He Xiaohuan, Cheng Hongbing.

Introduction

Organic acids are important organic components of precipitation, which are derived from direct emissions and atmospheric oxidation of other organic compounds. Total acidity and acid deposition Have a certain contribution, is an important concern of acid rain research. By observing organic acid roots in precipitation, the acidity can be fully and accurately assessed Wet deposition provides the basis. Ion chromatography is a more commonly used method for the analysis of acetate and acetate, but there is no international method for the determination of acetate and acetate in precipitation And national standards to be standardized. To this end, specially formulated this standard to standard ion chromatography formate and acetate precipitation in the precipitation of ions concentration. Determination of Formate and Acetate in Atmospheric Precipitation Ion chromatography

1 Scope

This standard specifies the measurement principle of ionic exchange chromatography for the determination of formate and acetate ion precipitation, reagents, instruments and Utensils, sample collection and preservation, measurement procedures, analysis results, analysis of quality control and evaluation. This standard applies to the determination of formate and acetate ion concentrations 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

Determination of formate and acetate by ion chromatography is the use of ion exchange principle of formate, acetate and other anion anion The inhibition column was used to subtract the background conductance of the eluent and then the conductivity detector was used for the determination. According to the standard solution of formate and acetate The retention time and peak area (or peak height) of an ion peak can be used to quantify formate and acetate ions in a sample. ......

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