1 Scope
This standard specifies hydride-atomic fluorescence spectrometry, inductively coupled plasma mass spectrometry and inductively coupled plasma emission spectrometry for the determination of arsenic migration in food contact materials and articles after being soaked in food simulants and also the determination of arsenic in paper product and cork.
This standard is applicable to the determination of arsenic migration in food contact materials and articles and arsenic in paper product and cork.
Part I Determination of Arsenic
Method I Hydride-atomic Fluorescence Spectrometry
2 Principle
Digest the paper product and cork with dry ashing after grinding, add sulfourea into digestion solution to pre-reduce the pentavalent arsenic into trivalent arsenic, generate arsenic hydride with reduced hydrogen, carry it by argon to quartz atomizer to be decomposed into atomic arsenic, and generate atomic fluorescence under excitation of emitting light from arsenic hollow cathode lamp. Its fluorescence intensity is in direct proportional to the arsenic concentration in tested liquid and compare with standard series for quantification.
Foreword i
1 Scope
2 Principle
3 Reagents and Materials
4 Instruments and Apparatus
5 Analysis Steps
6 Expression of Analysis Results
7 Accuracy
8 Other
9 Principle
10 Reagents and Materials
11 Instruments and Apparatus
12 Analysis Steps
13 Expression of Analysis Results
14 Accuracy
15 Other
1 Scope
This standard specifies hydride-atomic fluorescence spectrometry, inductively coupled plasma mass spectrometry and inductively coupled plasma emission spectrometry for the determination of arsenic migration in food contact materials and articles after being soaked in food simulants and also the determination of arsenic in paper product and cork.
This standard is applicable to the determination of arsenic migration in food contact materials and articles and arsenic in paper product and cork.
Part I Determination of Arsenic
Method I Hydride-atomic Fluorescence Spectrometry
2 Principle
Digest the paper product and cork with dry ashing after grinding, add sulfourea into digestion solution to pre-reduce the pentavalent arsenic into trivalent arsenic, generate arsenic hydride with reduced hydrogen, carry it by argon to quartz atomizer to be decomposed into atomic arsenic, and generate atomic fluorescence under excitation of emitting light from arsenic hollow cathode lamp. Its fluorescence intensity is in direct proportional to the arsenic concentration in tested liquid and compare with standard series for quantification.
Contents of GB 31604.38-2016
Foreword i
1 Scope
2 Principle
3 Reagents and Materials
4 Instruments and Apparatus
5 Analysis Steps
6 Expression of Analysis Results
7 Accuracy
8 Other
9 Principle
10 Reagents and Materials
11 Instruments and Apparatus
12 Analysis Steps
13 Expression of Analysis Results
14 Accuracy
15 Other
