This standard specifies the method for the determination of rare earths by the spectrophotometric three-wavelength method. This standard applies to the determination of rare earths in cereals, vegetables and fruits. The detection limit of this method is 0.1 μg (5g sample).
GB/T 5009.94-2003 history
2012GB 5009.94-2012 National Food Safety Standard Determination of Rare Earth Element in Foods of Plant
2003GB/T 5009.94-2003 Determination of rare earths in vegetable foods
GB/T 5009.94-2003 Determination of rare earths in vegetable foods was changed to GB 5009.94-2012 National Food Safety Standard Determination of Rare Earth Element in Foods of Plant.