GB/T 18415-2001
Active
T/SDAQI 037-2021
Active
Group standards
T/SDAQI 037-2021 Determination of organic selenium in grain crops
T/SDAQI 037-2021 Determination of organic selenium in grain crops
Price:
$ 20.00
Basic Information
Standard Code:
T/SDAQI 037-2021
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Agriculture, forestry
ICS Name:
General methods for food testing and analysis
Publish Date:
2021-09-25
Implement Date:
2021-10-25
Scope
Scope: This document is applicable to the determination of organic selenium content in wheat, rice, and corn; Main technical content: The samples are extracted with hydrochloric acid solution in a 70℃ water bath, and the supernatant is obtained by centrifugation. Then, the supernatant is purified with cyclohexane, separated, and an aqueous phase containing inorganic selenium is obtained. The inorganic selenium content is determined by atomic fluorescence spectrometry. The determination of total selenium content in the samples is carried out in accordance with the provisions of the first method in GB 5009.93-2017. The organic selenium content is the difference between the total selenium and the inorganic selenium content.
Development Information
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