Method for determining alkyl quaternaries cation surface active agent by liquid phase chromatography -tandem mass spectrometry combined technology

A technology of surfactant and alkyl quaternary ammonium, which is applied in the detection field of alkyl quaternary ammonium salt cationic surfactant, can solve problems such as poor qualitative effect, and achieve the effect of high selectivity, accurate analysis method and accurate qualitative
CN101311718AInactive Publication Date: 2008-11-26CENT TESTING INT GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CENT TESTING INT GRP CO LTD
Publication Date
2008-11-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for detecting the cationic surfactants of alkyl quaternary ammonium salts with the liquid chromatography-tandem mass spectrometry and includes the following steps: pre-treating the detected samples with a Soxhlet extraction method or a supersonic extraction method; detecting with a liquid chromatograph-tandem mass spectrometer with the LC conditions of a C18 reverse-phase chromatographic column, a column temperature of 30 to 60 DEG C, the inlet volume of 3 to 10ul, the mobile phase flow rate of 0.15 to 0.60ml per minute; the tandem mass spectrometry MS / MS is provided with the conditions of ionizing by adopting the electro-spray ionization model and the detection mode of multi-ion reaction. The method adopted by the invention is characterized by accurate and fast analysis method, high method selectivity, little interference, etc.
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Description

【Technical field】

[0001] The invention relates to a detection method for alkyl quaternary ammonium salt cationic surfactants, in particular to a method for detecting alkyl quaternary ammonium salt cationic surfactants by means of liquid chromatography-tandem mass spectrometry. 【Background technique】

[0002] Cationic surfactants have been widely used as fungicides, fabric softeners, antistatic agents, hair conditioners, etc., and are one of the important chemical raw materials in the washing industry and cosmetics industry. Alkyl quaternary ammonium salts with hydrophobic groups directly attached to nitrogen atoms are the simplest and most widely used cationic surfactants. Because alkyl quaternary ammonium salt cationic surfactants can provide excellent static control ability, wet combing and dry combing properties, deep conditioning effect and good additive properties, they are often used in hair conditioner formulations; in addition, alkyl quaternary ammonium salts Cation...

Claims

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