Method for measuring creosote in wood product

A technology for creosote and wood products, which is applied in the field of determination of creosote in wood products, can solve the problems such as no relevant reports, and achieve the effect of rapid determination method

Active Publication Date: 2017-03-22
SGS STANDARD TECHNICAL SERVICES SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And about the detection method of creosote in bamboo a

Method used

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  • Method for measuring creosote in wood product
  • Method for measuring creosote in wood product
  • Method for measuring creosote in wood product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1: the mensuration of creosote in bamboo chopsticks

[0076] 1. Sample preparation:

[0077] Cut the bamboo chopsticks into 2mm×2mm×2mm size, mix them evenly, and store them in a clean and dry airtight bag. Weigh 2.0±0.02g of the sample that is mixed evenly into a 40mL reagent bottle, add 20mL of toluene, 200μL of 10mg / L deuterated terphenyl (tracer) standard solution and 50mg / L deuterated naphthalene (internal standard) standard solution 200 μL. After vortexing for 1 min to mix well, ultrasonically extract for 60±5 min at a water bath temperature of 60±5°C. Take it out, cool it down to room temperature, transfer the sample solution to an injection bottle, and analyze it with a gas chromatography-mass spectrometer.

[0078] 2. Analyze the bamboo chopsticks extraction solution using the instrument method Ⅰ

[0079] This method is used to confirm whether the sample contains polycyclic aromatic hydrocarbons and phenolic markers of creosote and after confirmi...

Embodiment 2

[0123] Embodiment 2: the mensuration of creosote in cork

[0124] 1. Sample preparation:

[0125] Cut the cork into pieces of 2mm×2mm×2mm, mix them evenly, and store them in a clean and dry airtight bag. Weigh 2.0 ± 0.02 g of a well-mixed sample into a 40 mL reagent bottle, add 20 mL of toluene, 200 μL of 10 mg / L deuterated terphenyl (tracer) standard solution, and 50 mg / L deuterated naphthalene (internal standard) standard Solution 200μL. After vortexing for 1 min to mix well, ultrasonically extract for 60±5 min at a water bath temperature of 60±5°C. Take it out, cool it down to room temperature, transfer the sample solution to an injection bottle, and analyze it with a gas chromatography-mass spectrometer.

[0126] 2. Analysis of Cork Extraction Solution Using Instrument Method I

[0127] This method is used to confirm whether the sample contains polycyclic aromatic hydrocarbons and phenolic markers of creosote. And after confirming that the sample contains creosote sub...

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Abstract

The invention relates to a method for measuring creosote in a wood product. The method comprises 1) weighing a pulverized and uniformly mixed sample, adding an extraction solvent toluene, a tracer and an internal standard solution into the sample, carrying out uniform vortex mixing and carrying out ultrasonic extraction, 2) determining a creosote marker in the sample extract solution through a gas chromatograph-mass spectrometer, and 3) according to the chromatogram and spectrum obtained by the step 2, analyzing to ensure whether the sample extract solution contains a polycyclic aromatic hydrocarbon marker or phenol marker specially existing in creosote, so as to determine whether the sample contains the corresponding creosote, carrying out identification and quantification on the polycyclic aromatic hydrocarbon and phenol compounds selected as creosote markers, and calculating creosote content of the sample through conversion of the marker content of the sample. The method is fast and simple. Through a semi-quantitative method, the content of the four kinds of sample creosote materials prohibited by the regulations is measured and the detection limit is 50 mg/kg.

Description

[0001] [technical field] [0002] The invention belongs to the technical field of analytical chemistry, in particular to a method for measuring creosote in wood products. [0003] [Background technique] [0004] Bamboo and wood products can be seen everywhere in daily production and life. With the continuous improvement of technology and people's continuous pursuit of quality of life, bamboo and wood products have been favored by more and more people. Bamboo and wood materials are widely used in the manufacture of daily necessities, including products that are in direct contact with food, such as bamboo and wooden tableware and kitchen utensils (such as bamboo and wooden chopsticks, bowls, plates, buckets, steamers, pot covers, chopping boards, etc. ), natural cork stoppers, toothpicks, etc. [0005] Creosote is a strong disinfectant and preservative, which has antiseptic and bactericidal effects on bamboo and wood materials, and is widely used in the anticorrosion of wooden r...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/88
CPCG01N30/02G01N30/88
Inventor 俞安敏杜佳斌冯颖刘平年
Owner SGS STANDARD TECHNICAL SERVICES SHANGHAI CO LTD
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