Method suitable for simultaneously detecting 9 N-nitrosamines in food contact rubber products
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for food contact and rubber products, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., and can solve problems such as the inability to meet the requirements of the N-nitrosamine limit
Inactive Publication Date: 2014-10-01
THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
View PDF1 Cites 16 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Obviously, my country's current national standards cannot meet the international requirements for the limit of N-nitrosamines in food contact rubber products
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0122] Embodiment 1. A simultaneous detection method applicable to 9 kinds of N-nitrosamines in food contact rubber products, comprising the following steps:
[0123] 1), preparation of artificial simulated saliva:
[0126] Take the sample to be tested, cut it into small pieces of about 10mm×10mm, mix well, and use it as a sample.
[0127] Weigh 10.0g sample, accurate to 0.01g, place it in a stoppered Erlenmeyer flask, add 60.0mL artificial saliva to immerse the sample, and let it stand in a water bath at 37°C for 36 hours; filter to obtain a migration extract;
[0128] 3), prepare the sample solution to be tested
[0129] (1) Take al...
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 method suitable for simultaneously detecting 9 N-nitrosamines in food contact rubber products. The method comprises the following steps: utilizing a sample to be tested to establish a migration system to obtain a migration extract; utilizing the migration extract to prepare a sample solution to be tested to obtain a supernatant / filtrate; preparing 9 N-nitrosamines into a standard solution to further prepare a standard working solution with the gradient of 0.01-0.40 [mu]g / mL; injecting the gradient standard solution and the supernatant / filtrate into a liquid Chromatogram-tandem mass spectrograph, and testing the cation multi-reaction monitoring model to finally obtain the respective contents of 9 N-nitrosamines in the sample to be tested. The 9 N-nitrosamines are N-Nitrosodimethylamine, N-Nitroso-ethyl methylamine, N-Nitrosomorpholine, N-Nitrosopiperidine, N-Nitrosopyrrolidine, N-Nitroso-diethylamine, N-Nitrosodibutylamine, N-Nitrosodi-n-propylamine and N-Nitroso-diphenylamine.
Description
technical field [0001] The invention relates to a detection method suitable for N-nitrosamine in food contact rubber products. Background technique [0002] Rubber products are widely used in various fields such as national defense, industry and agriculture, and service industries, and are often used in people's daily life. From pressure cooker gaskets in the food field, sealing gaskets for various glass bottle caps, suction rubber tubes for the production of various liquid condiments, etc., to latex gloves, hot water bottles, club covers, sports balls, etc. involved in daily necessities Plastic track, etc., condoms in family planning products, etc., and many children's appliances such as baby pacifiers, suction nozzles, rubber balls, armrests in strollers, rubber balls, balloons, Barbie dolls, erasers, plasticine, etc. Rubber products abound . [0003] In 1982, the U.S. Consumer Product Safety Commission revealed that baby rubber pacifiers and soothers on the market may c...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 吴刚赵珊红王力君张明誉阮毅
Owner THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Login to view more 
Login to view more