Optimization method for analyzing ammonium salt source in atmospheric particulates based on nitrogen isotopes

A technology of atmospheric particulate matter and nitrogen isotope, applied in the analysis of gas mixtures, analysis of materials, improvement of air quality, etc., can solve problems such as unfavorable ambient air quality, misleading direction of air pollution control, deviation of ammonium salt source analysis results, etc., to achieve source The effect of accurate analysis results

Active Publication Date: 2021-02-19
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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Problems solved by technology

Therefore, this assumption will lead to obvious deviations in the follow-up analysis of the source of ammonium salts, which may mislead the direction of air pollutant emission reduction and is not conducive to the further improvement of ambient air quality

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  • Optimization method for analyzing ammonium salt source in atmospheric particulates based on nitrogen isotopes
  • Optimization method for analyzing ammonium salt source in atmospheric particulates based on nitrogen isotopes
  • Optimization method for analyzing ammonium salt source in atmospheric particulates based on nitrogen isotopes

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Embodiment Construction

[0041] The present invention will be further described in detail below in conjunction with the examples.

[0042] The invention relates to an optimization method for analyzing the source of ammonium salt in atmospheric particulate matter based on nitrogen isotope. This method simultaneously considers the nitrogen isotope change of ammonium salt in atmospheric particulate matter due to the nitrogen isotope fractionation of ammonia gas-ammonium salt conversion in the atmospheric environment and the atmospheric deposition of ammonia gas and ammonium salt, and calculates the nitrogen isotope value of ammonium salt in atmospheric particulate matter. The difference between the isotope values ​​of ammonia nitrogen emitted by the source is input into the isotope mixing model (such as MixSIAR, MixSIR, etc.) to analyze the contribution ratio of various emission sources to the ammonium salt in the atmospheric particulate matter. The advantage is that it more objectively reflects the cont...

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Abstract

The invention relates to an optimization method for analyzing an ammonium salt source in atmospheric particulates based on nitrogen isotopes. According to the method, the nitrogen isotope change of ammonium salt in atmospheric particulates caused by nitrogen isotope fractionation of ammonia gas-ammonium salt conversion in the atmospheric environment and atmospheric settlement of ammonia gas and ammonium salt is considered at the same time, and the difference value between the nitrogen isotope value of ammonium salt in atmospheric particulates and the nitrogen isotope value of source emission ammonia gas is calculated; and the difference value is inputted into an isotope mixing model (such as MixSIAR, MixSIR and the like), and contribution ratios of various emission sources to ammonium salts in atmospheric particulates are analyzed. The method has the advantages that the contribution ratio of various emission sources to the ammonium salt in the atmospheric particulates is more objectively reflected, the calculation efficiency is high, and the operation is simple.

Description

technical field [0001] The present invention relates to the field of source analysis of ammonium salt in atmospheric particulate matter, specifically by calculating the difference between the ammonium salt nitrogen isotope value in atmospheric particulate matter and the source discharge ammonia nitrogen isotope value, and inputting the difference into the isotope mixing model to realize the analysis Optimization of source apportionment methods for atmospheric ammonium salts. Background technique [0002] Ammonia is the most important alkaline gas in the atmosphere. It can chemically react with acid gases such as sulfur dioxide and nitrogen oxides in the air to form ammonium salt secondary particles, which significantly increases the concentration of fine particles in the atmosphere and affects air quality. Therefore, recognizing the pollution sources of ammonium salts in the atmosphere and taking effective control measures are effective means to improve air quality. [0003...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N15/00G01N15/04G06F17/15
CPCG01N33/0004G01N15/00G01N15/04G06F17/15Y02A50/20
Inventor 田崇国宗政孙泽宇
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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