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See Chinese contents: GB/T 5009.123-2003 GB/T 5009.123-2003: Determination of chromium in foods
This Standard specifies the content of chromium in foods which is determined by graphite furnace atomic absorption spectrometry (GFAAS) and oscilloscope polarography method. This Standard is applicable to the determination of total chromium in all kinds of foods. Detection limit of this Standard: GFAAS is 0.2ng/mL; oscilloscope polarography method is 1ng/mL.
