Method using ion chromatography for determination of ammonia content in electronic cigarette smoke fluid

Abstract

The invention discloses a method using ion chromatography for determination of ammonia content in electronic cigarette smoke fluid. According to the method, an electronic cigarette smoke fluid sample is extracted by an acid solution; if the sample is dissolved completely in the extraction liquid, supernatant liquid is taken for filtration with a 0.45 mum aqueous microporous membrane; if the sample is in suspension state, the extraction liquid is placed in a centrifuge tube for centrifuging for 5min in the 10000r / min speed, and a clear liquid is taken for filtration with a 0.45 mum aqueous microporous membrane. After the pretreatment, the extraction liquid is introduced into an ion chromatograph for determination by external standard method quantitative analysis. The method is fast in operation, simple and easy. Results show that: the ammonia is in good linear relationship in linear range (R2 > = 0.999), the detection limit is 0.0350 mug / g, the limit of quantification is 0.116 mug / g, the three adding standard level recovery rate is in the range of 93.21%-106.47%, and the method has high sensitivity and good repeatability and recovery rate.

Description

technical field [0001] The invention relates to the technical field of physical and chemical testing of electronic cigarette products, in particular to a method for measuring ammonia content in electronic cigarette liquid by using ion chromatography. Background technique [0002] E-cigarette is a portable electronic atomizer imitating cigarettes. Through the atomizer, the e-cigarette liquid is atomized and inhaled directly. The process is similar to smoking real cigarettes, but no smoke is produced during the process. The most important part of electronic cigarettes is electronic cigarette liquid, whose main components are propylene glycol, glycerin and water; at the same time, most of them contain tobacco plant extracts or other plant extracts, as well as some chemically synthesized flavors and fragrances. Through these components and Various additives achieve a taste similar to that of real cigarettes. Most e-cigarette liquids contain nicotine, but a small amount does not...

AI Technical Summary

Problems solved by technology

If the ammonia content is too low, the strength of the smoke will decrease and the fullness will not be enough; however, excessive ammonia will produce a strong irritant, causing the smoker's throat to constrict, making people feel coughing in the nose and tongue with an unbearable pungent feeling; Therefore, ammonia plays an important role in controlling cigarette smoking

However, there is no report on the determination of ammonia content in e-cigarette liquid

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