GB/T 5009.100-2003 Analytical methods for hygienic standards of expanded polystyrene products for food packaging

This standard specifies the analytical method for the hygienic standard of expanded polystyrene products for food packaging. This standard applies to food packaging products made of polystyrene resin as raw material and dichlorodifluoromethane as foaming agent. GB/T 5009.100-2003 Analytical method for the hygienic standard of expanded polystyrene products for food packaging GB/T5009.100-2003 Standard download decompression password: www.bzxz.net

ICS.57.040
National Standard of the People's Republic of China
GB/T 5009.100--2003
Replacement of GB/151191391
Method fnr analysis of hygienic slandard ofpraducts of foamed pnlyslyrene for foud packaging2003-08-11 Published
Ministry of Health of the People's Republic of China
National Standard Management Committeewww.bzxz.net
2004-01-01Implementation
GB/T5009.100-2003
This standard replaces GB/T13119-13119-19S1 Hygiene Standard for Pressed Food Packaging: Analysis method based on hygienic standard for molded products 3. This standard G15%T1H119-19S1 cabinet ratio Main modifications: According to G8/T20001.42001 standard compilation rules
Part 1: Chemical analysis method? The conclusion of the original standard was collected and merged by the Ministry of Health of the People's Republic of China. This standard was drafted by Beijing Municipal Health and Prevention Station, Ministry of Health Food Hygiene Supervision and Inspection Institute, Shanghai Fanwan District Industrial Health and Prevention Station, and the main drafters are: T. Long, Zhang Hongxiang, Lao Jingda. The original standard was first issued in 2001, and this is the second decision. 1 Scope
Analysis method of hygienic standard of expanded polystyrene molded products for food packaging
This standard specifies the analysis method of hygienic standard of expanded polystyrene products for food packaging. GB/T 5009.100—2003
This standard is applicable to food packaging products made of ethylene glycol as raw material and added with dioxane. Normative references
The clauses in the listed documents are selected as the clauses of this standard through reference in this standard. They are old documents with the date of reference. All subsequent amendments (excluding the contents or revisions) are not applicable to this standard. However, if the parties who dare to reach an agreement on this standard can upgrade these documents to new versions, the referenced documents without date are the new versions. This standard applies to this standard, GB/5%.6V2005 Standard for analysis of polyethylene, polypropylene and polypropylene molding products for food packaging 3 Sampling method
The manufacturer's product batch guide, each batch according to the number of samples, each batch of random sampling shall not be less than 25, of which one-third for inspection: one-third for re-integration and one-third for cross-sectional analysis. 4 Sensor inspection
Maintain the original white vinyl wax brush, foreign matter: 5 Sample treatment
5.1 When the molded product is layered, each sample is 2m5cm in diameter (5 pieces per batch), and about 10c of blood is taken from each piece, and 2mL of soaking liquid (such as a complete thick substance) is used for each small piece. Calculate the total area, add the above-mentioned micro-cell according to the total area).
5.2 Soak in water, %0r, keep warm 21. Put the sample into a 30mm1. Erlenmeyer bottle. Take the pre-calculated sample into the tray at the end of the cell or take a simple sample. Pour the sample into the two corners for 2h, and take out each sample: moisten the sample on the surface, try to prevent it from falling into the liquid and avoid it from being mixed together.
5.3% acid soak: 5.2 principle: 1% acid 5 soak zh5.22 alcohol soak: 5.2 principle: 55% ethanol 50℃ soak 2, 5.5 normal hexane diffuse, 5.3 principle: buy full (c℃ 5: According to the consumption of potassium permanganate in 2h6, the evaporation reaction is shown in B/T5008.C-2004+4th process. ? Evaporation residue production
7.1 Principle
The test was performed by using various droplets and then evaporating the solution in different bubble waves. These four solutions were used to simulate the contact with water, whole wine, and the release of the same sex food: 7.2 Analysis step
Take 200mT of each solution and place it in a pre-dried glass or concentrated container at 15%:1 until the solution is 7mm thick. 767
GB/T 5005.100—2003
After 21 hours of drying, weigh water, acetic acid, ethanol and 11 alkane, weigh to constant positive (machine weight difference 1, the standard does not need constant year). 7.3 Result calculation
According to G5/T5009.602CG3 5,3
B blue metal
According to GB/T5000%,62003 No. 5,
9 Two bottles of two bottles of acetylene
9.1 Principle
Starting from There is this kind of gas bath. Transfer the sample into a sealed balance bottle and dissolve it with a solvent. At a certain temperature, expand it vertically and horizontally to reach equilibrium. Inject the collected gas into the gas phase and determine the color of the gas. This method detects h2.3g/kg
9.2 Reagents
9.2.1 Replacement of diisocyanate (abbreviated as F-12): purity greater than S9.5%. Store in a refrigerator for 2 hours: 9.2.2N-dimethylformamide (MA) should not be detected under the same storage condition as the above-mentioned value. In principle, the TMA should be placed in a well-heated environment at a temperature not exceeding 1 (0.1 °C) and placed in a well-heated environment to remove impurities with low contact point to eliminate interference.
3.2.3 Preparation of F12 standard solution: Put the balance bottle and the holder together and accurately measure the DM1 float (accurate 30.002%). There is a space of 1mL at the mouth of the bottle, so the correct amount is m. Take F-12 gas: m. After the balance space is gradually dissolved in DM4, the correct amount is 9. 7.4 Calculation of concentration of preparation 1-12: Formula (1), W:
Preparation -12 dimension, unit is mg/mL (mg/mL),
mass of balance bottle, unit is g (); mass of solvent before balance bottle, unit is g (). Half balance agent plus -12 gas catties mass, unit is g (2!nM4 relative density, w=U.3.
9.3 Receiver
Gas phase chromatograph: Oxygen flame ionization detector (FIL). 9. 3. 1
Super slow temperature water grid: Expansion degree 1
Mill-fluidizer: 2nl.5ml. Mixing No. 5 head 9.3.4
9. 3. 5 Concentration test injector: 50 l., 1 prE..U. analysis steps
9.-,1 Chromatographic recording
9.4.1.1 Package: 1.3mx2mm i.d.) 9.4.1.2 Phase determination: Por%kQ (80F--02H or above 4C7 organic phase (59F~9 days).-)
9.4.1.3 Create a reference): 110 °C, vaporization temperature 18, detector temperature 160 °C, gas 10mL/min, oxygen 30l./mn, air ouL/n: enter 2ml. Gas outside 9.4.2 Drawing of standard lines
In 5 half-balanced volumes, 3m1.M, calculate, use a micropipette or syringe 0.10,2050.1C:L standard band rate sea through the chamber CB/1 5009.1C0—2003
(in g12 by light · instrument rate: liquid
2 note color agreed, with .2 content as the standard sitting height half of the vertical wire 5 note mountain line 9.4.3 sample determination
partner into horse use point method to take pieces, you table 5 efficiency people thank me. People fall into the plug according to about a temperature Yu Zhong 1, the company sample area gas according to the note color only side Shi Mi mountain line west out of the treasure most number (\)
9.4.4 result calculation
sincere sample - formula (calculation:
Wu Yang 12 benefit. Single speed gram one gram (rrk): from the standard industry line F mass, constant position is constant (): sample quality recording unit is gram,
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