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Measuring method of phenol content in toy material

A measurement method and technology for phenol, applied in the field of system detection and analysis and testing, can solve the problems of inability to accurately reflect the phenol content, time-consuming detection and high cost, and achieve the effects of efficient and fast extraction, convenient operation and strong anti-interference ability.

Inactive Publication Date: 2012-03-28
深圳天祥质量技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To solve the current technical problems such as long time-consuming detection, high cost, and the inability to detect when the phenol content in the sample is low, and the inability to accurately reflect the phenol content in the sample

Method used

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  • Measuring method of phenol content in toy material
  • Measuring method of phenol content in toy material
  • Measuring method of phenol content in toy material

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Embodiment Construction

[0021] A detailed description will be given below of specific embodiments of the present invention.

[0022] Phenol standard stock solution: Accurately weigh 0.100 mg of phenol standard substance, put it in a test tube, dissolve it with methanol and adjust the volume to the mark, shake well, and prepare a standard stock solution with a concentration of 1000 μg / ml.

[0023] (1) Sample processing

[0024] First cut the solid sample to be tested into a sample with a side length of 3mm; weigh 1g of the cut sample and put it into a test tube, add 10ml of methanol, and ultrasonically extract it in an ultrasonic water bath at 70°C with 100% power for 1h, and the supernatant The liquid was filtered through a 0.45mm filter head for determination by high performance liquid chromatography.

[0025] (2) Measurement conditions

[0026] Chromatographic column: C18 liquid chromatography column

[0027] Mobile phase: a mixed solution of 35% acetonitrile and 0.4% acetic acid aqueous solutio...

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Abstract

The invention discloses a measuring method of phenol content in a toy material. The method comprises the steps of: pretreating a sample through an ultrasonic extraction method; filtering the extraction liquid into a chromatogram bottle for instrumental analysis; detecting phenol by a high performance liquid chromatography technology with a C8 or C18 liquid chromatographic column, which has flow of 0.1-3ml / min, an injection volume of 10-50 microliters, and a temperature of 20-50DEG C; subjecting the extraction liquid to elution treatment through a mobile phase; conducting analysis and detection to the extraction liquid separated by the chromatographic column. The method of the invention simplifies the pre-treatment operation in terms of detection and is convenient for operation. The method employs ultraviolet and fluorescence signals simultaneously to carry out qualitative and quantitative detection to phenol, thus having a strong anti-interference capability. By choosing an appropriate chromatographic column, controlling an appropriate mobile phase, and setting appropriate flow and column temperature, the method provided in the invention can carry out an optimum separation to phenol.

Description

technical field [0001] The invention relates to a system detection and analysis test method, in particular to a method for measuring the content of harmful substance phenol. Background technique [0002] In the current various environmental protection directives, there are more and more restrictions on organic substances. For example, PoSH directive, REACH directive, CPSIA and other directives all involve the restriction of various organic harmful substances. Among them, phenol is a toxic substance, which has a strong corrosive effect on the skin and mucous membranes, can inhibit the central nervous system or damage liver and kidney functions; inhalation of high-concentration steam can cause headache, dizziness, fatigue, blurred vision, pulmonary edema, etc.; Accidental ingestion can cause digestive tract burns, burning pain, exhaled breath with phenol smell, vomit or stool with blood, there is a possibility of gastrointestinal perforation, shock, pulmonary edema, liver or k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 顾晓华舒文利
Owner 深圳天祥质量技术服务有限公司
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