A method for separating roxarsone and its degradation products in broiler feces

A technology for degradation products and feces is applied in the field of separating roxarsone and its degradation products in broiler feces, and can solve the problems of low recovery rate of roxarsone, unsatisfactory effect, inability to use inorganic phosphate solution, etc. Recovery rate, increase recovery rate, reduce the effect of background interference
CN105547774BInactive Publication Date: 2018-11-06BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
Publication Date
2018-11-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for separating roxarsone and its degradation product in broiler manure. The method comprises 1, carrying out extraction on a manure sample through a methanol-water extraction agent, 2, condensing and purifying the sample through a solid phase extraction column and 3, determining a roxarsone recovery rate of the manure sample through an external standard method. The separation method utilizes the methanol-water extraction agent with a methanol-water volume ratio of 1: 9 to extract roxarsone residues in the manure sample and has a high recovery rate. When the sample is further purified through a solid phase extraction column, a formic acid-methanol-water agent with a formic acid-methanol-water volume ratio of 5: 65-75: 20-30 is used and an eluant with pH of 2 is used so that an ideal recovery rate is guaranteed and polar compound impurities in the sample can be removed and thus background interference in mass spectrum detection is reduced. The recovery rate of the separation method satisfies later detection requirements.
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Description

Technical field

[0001] The invention relates to the field of chemical substance separation, in particular to a method for separating roxarsone and its degradation products in broiler manure. Background technique

[0002] Roxarsone (3-nitro-4-hydroxyphenylarsenic acid, Roxarsone) is an organic arsenic (As) compound. Because of its antibacterial and growth-promoting effects, it can be used as an additive in broiler feed. Roxarsone is rarely degraded in animals, and is mostly excreted in the feces in the form of the original drug, and enters the environment to cause serious local arsenic pollution. As the ecological environment is deteriorating day by day, people are paying more and more attention to the degradation and migration of organic arsenic preparations in the environment and the impact on environmental organisms. Roxarsone enters the environment mainly through livestock and poultry manure. After entering the environment, it may pass through organisms. The degraded or non-b...

Claims

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