GB/T 18415-2001
Active
T/CAIA SH001-2014
Active
Group standards
T/CAIA SH001-2014 Monosodium glutamate sulfur compound determination using methylene blue spectrophotometry
T/CAIA SH001-2014 Monosodium glutamate sulfur compound determination using methylene blue spectrophotometry
Price:
$ 20.00
Basic Information
Standard Code:
T/CAIA SH001-2014
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Analysis methods for toxic substances in water environments
ICS Name:
General methods for food testing and analysis
Publish Date:
2014-12-24
Implement Date:
2015-05-01
Scope
Scope: This standard specifies the method for determining the content of sulfides using the spectrophotometric method with methylene blue. This standard is applicable to the determination of sulfides (calculated as S2) in MSG ranging from 0.3 mg/kg to 4.6 mg/kg; Main technical content: The sample is dissolved in water, acidified to convert the sulfides into hydrogen sulfide, and the hydrogen sulfide is carried into an absorption solution containing triethanolamine-EDTA-sodium hydroxide by air. Under the presence of Fe(III), it reacts with N,N-dimethyl-p-phenylenediamine to form a methylene blue complex. The absorbance is measured at a wavelength of 665 nm on a spectrophotometer. The mass fraction of sulfides is calculated.
Development Information
Related Standards
GB/T 18524-2001
Replaced
GB/T 18524-2001 Codex general technical requirement for food irradiation
GB/T 18525.1-2001
Active
GB/T 18525.1-2001 Code of good irradiation practice for insect disinfestation of dried pulses
GB/T 18525.2-2001
Active
GB/T 18525.2-2001 Code of good irradiation practice for insect disinfestation of cereal grains products
GB/T 18525.3-2001
Active
GB/T 18525.3-2001 Code of good irradiation practice for insect disinfestation of dried red jujubes
GB/T 18525.4-2001
Active