Characterization and comparison of <i>Re-Du-Ning</i> aerosol particles generated by different jet nebulizers

The reduction of nitrate to nitrous oxide by chemical conversion has the characteristics of simple operation and high sensitivity. Therefore, it is widely used in the pretreatment of nitrogen and oxygen isotopes. In this paper, a series of blank experiments were performed to determine various factors influencing the determination process for the chemical conversion method. To determine blank background values for reagents such as deionized water, NaCl and cadmium powder used in the experiment, the optimal experimental conditions of NaN 3 , NaCl and cadmium powder were determined to maximize the nitrate reduction rate. The results showed that NaCl was burned at 450 C for 48 hours, and the placement time was not more than one day, which could minimize the pollution introduced by NaCl. When 0.3 g of cadmium powder and 600 nmol of NaN 3 were added, the overall reduction efficiency reached 90%.After measuring actual standard samples, the method demonstrated a good accuracy and applicability.

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“…By measuring the isotope value of the natural sample, it showed that the above method has good applicability. 22 …”

Section: Introductionmentioning

confidence: 99%

Blank experimental study on the determination of nitrogen and oxygen isotopes by chemical conversion method

Zong

Wang

et al. 2019

RSC Adv.

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Preparation and evaluation of sustained release pirfenidone-loaded microsphere dry powder inhalation for treatment of idiopathic pulmonary fibrosis

Bao,

Zou,

Firempong

et al. 2023

European Journal of Pharmaceutical Sciences

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Comparison of plasma and pulmonary availability of chlorogenic acid, forsythiaside A and baicalin after intratracheal and intravenous administration of Shuang-Huang-Lian injection

Chen

Yang

Cui³

et al. 2021

Journal of Ethnopharmacology

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Characterization and comparison of Re-Du-Ning aerosol particles generated by different jet nebulizers

Abstract: Delivery dose uniformity determination by BRS 2000 breath simulator and realtime particle size distribution monitoring by Spraytec.

Cited by 4 publications

References 45 publications

Blank experimental study on the determination of nitrogen and oxygen isotopes by chemical conversion method

Blank experimental study on the determination of nitrogen and oxygen isotopes by chemical conversion method

Preparation and evaluation of sustained release pirfenidone-loaded microsphere dry powder inhalation for treatment of idiopathic pulmonary fibrosis

Comparison of plasma and pulmonary availability of chlorogenic acid, forsythiaside A and baicalin after intratracheal and intravenous administration of Shuang-Huang-Lian injection

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