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GB 5009.33-2016 English PDF (GB5009.33-2016)

GB 5009.33-2016 English PDF (GB5009.33-2016)

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GB 5009.33-2016: National food safety standard -- Determination of nitrite and nitrate in foods
This Standard specifies the method of determining nitrite and nitrate in foods. This Standard is applicable to the determination of nitrite and nitrate in foods. Method I -- Ion Chromatography Precipitate protein and remove fat from the sample; adopt the corresponding method to extract and purify; take potassium hydroxide solution as the eluent; adopt anion exchange column for separation; take conductance detector or UV detector for detection. Determine the nature with the retention time and quantify with the external standard method.

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