Precise identification method for unknown volatile components in fragrant stationery
A technology of volatile components and identification methods, which is applied in the field of accurate identification of unknown volatile components in scented stationery, and can solve problems such as volatile substances that have not yet been applied
Pending Publication Date: 2022-02-25
CHINESE ACAD OF INSPECTION & QUARANTINE
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
GC-Orbitrap MS has great potential for non-targeted analysis of unknown volatile substances, which has not been applied to the analysis of volatile substances in stationery
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032] The invention proposes non-targeted analysis and accurate identification of unknown volatile components in scented stationery by using headspace gas chromatography-electrostatic field orbitrap high-resolution mass spectrometry. Volatiles released from samples (22 scented erasers and 17 scented pens) were analyzed under specific headspace conditions. Based on four identification steps (step 1: composite score and retention index, step 2: identification of molecular formula using positive chemical ionization (PCI) and negative chemical ionization (NCI), step 3: identification of isomers by detailed comparison of fragment ions, Step 4: chemical standard verification) qualitative analysis of unknown substances. A total of 101 volatile substances were identified in the scented eraser and 86 volatile substances were identified in the scented pen. The identified substances were divided into eight categories. Among the scented erasers and pens, aliphatic hydrocarbons, aromatic...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a precise identification method for unknown volatile components in fragrant stationery. The method comprises the following steps: placing a fragrant stationery sample in a headspace bottle, releasing the volatile components from the sample into the headspace bottle, collecting data in an electron ionization mode, a positive chemical ionization (PCI) mode and a negative chemical ionization (NCI) mode, and analyzing the data by GC-Orbitrap MS; and decomposing peaks of unknown volatile substances into relatively clean spectrograms through deconvolution, comparing the obtained high-resolution mass spectrograms with standard mass spectrograms in an NIST 2014 spectrum library, and carrying out non-targeted analysis. According to the invention, the method provides a technical method for accurately identifying unknown substances in products such as fragrant stationery and the like, is also used for monitoring unknown volatile chemical substances in the products and further evaluating possible risks of the unknown volatile chemical substances to consumers, and can be applied to exploring more unknown fields in the future.
Description
technical field [0001] The invention relates to an identification method of chemical substances, in particular to an accurate identification method of unknown volatile components in scented stationery. Background technique [0002] Among kindergarten children and elementary school students aged 3 to 12, scented stationery such as scented erasers and scented pens are very popular. In order to cover up unpleasant smells or increase the appeal to children, stationery should be scented. It has long been known that stationery with a strong aroma may be harmful to children's health, but the specific ingredients and sources of harm are still unclear. In fact, the volatile components of scented stationery include a variety of harmful substances, such as benzene, allergenic fragrances, organic solvents, etc., which may have a cumulative negative impact on children's health. Volatile organic compounds (VOCs) can cause drowsiness, headaches, and dizziness symptoms, and long-term expo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
CPCG01N30/88G01N2030/8868
Inventor 吕庆刘雅慧李红艳王志娟张庆
Owner CHINESE ACAD OF INSPECTION & QUARANTINE