GB/T 35664-2017 in English

VALID

Determination of ammonium in the wet precipitation--Ion chromatography

Issued on:2017-12-29
Implemented on:2018-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $190.00
$185.00

Standard No:	GB/T 35664-2017
Document status:	VALID
Title in English:	Determination of ammonium in the wet precipitation--Ion chromatography
Title in Chinese:	大气降水中铵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:	2017-12-29
Implemented on:	2018-07-01
ICS Classification:	07.060-Geology. Meteorology. Hydrology
Chinese Classification:	A47-Meteorology
Professional Classification:	GB-National Standard
Related Keywords:	atmospheric precipitation ion chromatography mg/l ammonium ion concentration prepared ion chromatography ion chromatography introduction national standard measurement principle ion chromatography
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ion mass spectrometry Ion Chromatography and Ion Pair Chromatography High quality icp ion chromatography MS ammonium ion Ion Determination Five Items Atmospheric pressure monohydrate ion Ion chromatography sample preparation method Ion Chromatography Sample Peak Gas Chromatography and Ion Chromatography What is the peak height of the ion chromatogram Use of Ion Chromatography Spectra and Ions How to measure sodium ion in water quality 9 ions in mass spectrometry Precursor Ions and Precursor Ions in Mass Spectrometry Suppressed High Performance Ion Chromatography Mass Spec + Ion Pair Method Ammonium ion absorption peak Ionic Hydrazine Parts potentiometric ion chromatography Chromatography for the determination of chromium in water ion chromatography iron Analysis of ammonium ions Ammonium ion analysis Ion trap qualitative ic ion chromatography test ic ion chromatography test Gold ion detection Ion Chromatography Copper Ion Ion Chromatography Potassium Determination of Palladium by Ion 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Ion chromatography column flushing method Method for detecting manganese ions in water Fluoride ion determination in wastewater The methods of ionization in mass spectrometry include Testing of ammonium ion content Ammonium ion detection standard curve method Methods to improve precision in determination of ion chromatography Chromatography software Ion chromatography method detection limit Determination method of silver ion content by ion chromatography Monoclonal antibody ion chromatography method development Determination of ammonium ions in power plants Method for measuring iodide ion content by ion chromatography Method for determination of amino sugars by ion chromatography Ion chromatography organic amines Determination of ammonium in boiling liquid Deionized water detection method Online monitoring method for arsenic ions in water Anion chromatography measurement method video Ammonium root determination Ammonium ion detection method Ion chromatography industry Determination of ammonium radicals in water quality Methods to improve chromatographic resolution National standard determination method for silver ions Chromatographic separation methods Electronic grade reagent ion chromatography Deionized water testing Thunder magnetic ion measurement method for chloride ions Standard curve chart for the determination of ammonium ions Standard curve for fluoride ion in ion chromatography Methods for changing resolution in chromatography Water quality copper ion determination method The role of ion chromatography standard curve Ion chromatography mixed standard curve Ammonium ion evaluation What are the chromatographic separation methods? Copper ion iron ion calibration Detection limit of ion chromatography method Standard ion chromatography for detection of metal ions Quantitative method for measuring ammonium ions Common pretreatment methods for ion chromatography Determination of ammonium ions by ion chromatography National identification of ion chromatography Ways to increase separation Paper on detection limit of ion chromatography method Sodium and potassium ion ion chromatography detection method Characteristics of ionization methods under atmospheric pressure Ion chromatography needle alignment method Method for detecting divalent manganese ions in water How to operate an ion chromatograph Ammonium ion analysis method Construction of Proton and Heavy Ion Center Ion Chromatography Industry Standard Seawater Determination of divalent copper ions Ammonium ion quantitative test method Determination of cations in sea water Determination method of cations in sea water Method for determination of sodium ions by ion chromatography Ion chromatography proficiency testing method Determination of fluoride ions in water samples Ion detection in water What are the chromatographic separation methods? Four chromatographic separation methods Acceptance of ion chromatography columns Method for determining flow rate of mass spectrometry ion source Principles of ion chromatography methods Ammonium ions in surface water Method for determination of phosphorus ions in solids National standard for lithium ion detection in water Ion chromatography cation standard curve The most common detection method of ion chromatography Ammonium ion content calibration Method for measuring ammonium ions in electrolyte Ion chromatography standard collection Lithium ion titration method in water Commonly used pretreatment methods for ion chromatography Protein separation methods ion exchange chromatography How about the chloride ion standard curve of ion chromatography? Puren Ion Chromatography Ammonium ion quantitative detection method Separation method of gas entrained water Method for determining molecular ion peak Evaluation Methods of Ion Chromatography Conductivity Detector National Standard for Application of Ion Chromatography Standard curve for calcium determination using plasma chromatography Innovations in ion chromatography method optimization Standard curve determined by plasma chromatography

《GB/T 35664-2017大气降水中铵离子的测定离子色谱法》由TC540（全国气候与气候变化标准化技术委员会）归口，TC540SC1（全国气候与气候变化标准化技术委员会大气成分观测预报预警服务分会）执行，主管部门为中国气象局。

Introduction

National Standard of the People's Republic of China GB/T 35664—2017

Determination of Ammonium Ions in Atmospheric Precipitation Ion Chromatography

1. Background and Significance of Standard Formulation

Ammonium ions are an important component of atmospheric precipitation, and their concentration is directly related to the formation of acid rain and the assessment of nitrogen deposition. This standard adopts ion chromatography for determination, which has higher sensitivity and accuracy than traditional spectrophotometry.

2. Measurement Principle

Ion chromatography separates ammonium ions from other cations through a cation separation column, and detects them using a conductivity detector. This method can effectively suppress the background signal of the eluent and ensure the reliability of the measurement results.

3. Requirements for reagents and instruments

Category	Name	Specifications	Preparation method
Reagents	Standard stock solution	1000.00 mg/L ammonium ion concentration	Prepared with analytical grade ammonium chloride or ammonium sulfate, stored at 4℃ for no more than 3 months.
	Test solution	Concentration range is 10%-90% of sample concentration	Diluted from the standard stock solution, stored at 4℃ for no more than 1 month.
Instrument	Ion Chromatograph	Equipped with conductivity detector, cation separation column and suppression column	Preheat for more than 2 hours to ensure baseline stability.

4. Sample collection and storage

Follow GB/T 13580.2 standard. Samples should be analyzed as soon as possible, filtered with a 0.45 µm filter membrane before analysis, and interspersed with analysis of test solution and blank sample.

5. Analysis steps and quality control

5.1 Calibration curve preparation

Use the working standard solution to prepare a series of solutions with concentrations of 0.025 mg/L, 0.50 mg/L, 1.00 mg/L, 2.00 mg/L and 5.00 mg/L, and draw a calibration curve. The square correlation coefficient (r²) must be greater than 0.995.

6. Implementation suggestions

Daily operation:The instrument should be warmed up for at least 2 hours, and the stability of the calibration curve should be checked regularly.
Quality control:Precision and accuracy assessment should be performed after each batch of sample analysis to ensure that the relative standard deviation is within ±10%.
External Verification: Participate in inter-laboratory comparison at least once a year, using acid rain reference materials GBW08672, GBW08673 and GBW08674 for evaluation.

More samples: GB 18306-2015 GB 50021-2001(2009) NB/T 47013.2-2015

Sample only — not a preview of GB/T 35664-2017

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