Valid

GB 31604.40-2016National food safety standard - Food Contact Materials and Articles - Determination of Migration of Maleic Acid and Its Acid Anhydride (English PDF)

食品安全国家标准食品接触材料及制品顺丁烯二酸及其酸酐迁移量的测定

Preview PDF

This is a limited preview

Buy now to download the full PDF (9 pages)

Need quotation for your management?

Get a formal quotation for GB 31604.40-2016 in 30 minutes.

Issued by

National Health and Family Planning Commission of the PRC

Level / Type

National · Mandatory

Issue date

October 19, 2016

Implementation date

April 19, 2017

Scope

GB 31604.40-2016 is the English-translated version of 食品安全国家标准食品接触材料及制品顺丁烯二酸及其酸酐迁移量的测定.

GB 31604.40-2016 — This Standard specifies the method for determination of migration of maleic acid and its acid anhydride in food contact materials and articles.

This Standard applies to the determination of the total amount of maleic acid in food simulants.

Found what you need?

Document preview — GB 31604.40-2016

National Standard of the People's Republic of China

Issued by: National Health and Family Planning Commission of the PRC

Foreword .3
1 Scope ..4
2 Principles .4
3 Reagents and materials ..4
4 Instruments and equipment .6
5 Analytical procedures .6
6 Analysis results expression .7
7 Precision.8
8 Others .8
Appendix A High performance liquid chromatograms of maleic acid .9

Foreword

This Standard replaces GB/T 23296.21-2009 "Food contact materials - Polymer

- Determination of maleic acid and maleic anhydride in food simulants - High

performance liquid chromatography".

As compared with GB/T 23296.21-2009, the main changes of this Standard are

as follows.

- The Standard's name is "National Food Safety Standard - Food Contact

Materials and Articles - Determination of Migration of Maleic Acid and Its

Acid Anhydride";

- MODIFY the conditions for high performance liquid chromatography;

- MODIFY the limit of detection.

National Food Safety Standard -

Food Contact Materials and Articles - Determination of

Migration of Maleic Acid and Its Acid Anhydride

1 Scope

This Standard specifies the method for determination of migration of maleic acid

and its acid anhydride in food contact materials and articles.

This Standard applies to the determination of the total amount of maleic acid in

food simulants.

2 Principles

Maleic anhydride, in the presence of water, turns into maleic acid. By

determining the content of maleic acid, the migration of maleic acid and its acid

anhydride is indirectly obtained. After the sample is soaked, water-based food

simulants are injected directly. Oil-based food simulants, after being extracted

by sodium bicarbonate solution and purified by C18 solid-phase extraction

cartridge, are determined by high performance liquid chromatography. ADOPT

reversed-phase chromatographic column to separate; ultraviolet detector to

detect; external standard method to quantify.

3 Reagents and materials

Unless otherwise stated, the reagents used in this method are analytically pure;

the water is the Grade I water specified in GB/T 6682. During the test,

containers and transfer instruments shall avoid the use of plastic material.

3.1 Reagents

3.1.1 Methanol (CH4O). chromatographically pure.

3.1.2 Phosphoric acid (H3PO4).

3.1.3 Sodium bicarbonate (NaHCO3).

3.1.4 Reagents required for the preparation of water-based, acidic, alcohol-

food simulants is 0.00 mg/kg, 2.00 mg/kg, 4.00 mg/kg, 8.00 mg/kg, 20.0 mg/kg,

and 40.0 mg/kg, respectively. ADD 25 mL of 1% sodium bicarbonate solution;

SHAKE for 5 min; LET stand for layering; PIPETTE the lower-layer aqueous

solution; USE C18 solid-phase extraction cartridge to filter; TAKE 1.0 mL of the

filtrate, through a 0.45 µm filter membrane, FILTER it in injection bottle; to be

determined by the machine.

4 Instruments and equipment

4.1 High performance liquid chromatography. equipped with diode array

detector or ultraviolet detector.

4.2 Electrothermal constant-temperature dry box.

4.3 Analytical balance. The sensitivity is 1.0 mg and 0.1 mg.

4.4 Vortex mixer.

4.5 C18 solid-phase extraction cartridge. The cartridge stuffing is 500 mg.

5 Analytical procedures

5.1 Preparation of test solution of food simulants

5.1.1 Migration test

According to the requirements of GB 5009.156 and GB 31604.1, CARRY out

migration test on the sample; and OBTAIN test solution of food simulants.

5.1.2 Treatment of soaking solution

5.1.2.1 Preparation of test solution of water-based food simulants

(including distilled water, 4% of acetic acid, alcohol simulants)

TAKE about 1.5 mL of the water-based food simulants obtained from the

migration test; through a 0.45 µm filter membrane, FILTER it for determination.

2 samples are prepared in parallel.

5.1.2.2 Oil-based food simulants

Accurately WEIGH 25 g (accurate to 0.1 g) of soaking solution of oil-based food

simulants in separating funnel; ADD 25 mL of 1% sodium bicarbonate solution;

SHAKE for 5 min; LET stand for layering; PIPETTE the lower-layer aqueous

solution; USE C18 solid-phase extraction cartridge to filter; TAKE 1.0 mL of the

filtrate, through a 0.45 µm filter membrane, FILTER it in injection bottle; to be

......

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.

How to Download GB 31604.40-2016

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.