GB/T 22290-2008
Determination of rare earth in tea by inductively coupled plasma mass spectrometry (English Version)

Standard No.

GB/T 22290-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2012-07

Replace By

GB 5009.94-2012

Latest

GB 5009.94-2012

Scope

This standard specifies the method for the determination of rare earth elements in tea by inductively coupled plasma mass spectrometry (ICP-MS). This standard applies to rare earth elements scandium (Sc), yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium ( Determination of Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu). When the sampling amount of the sample is 2g, and the constant volume is 25mL, the minimum detection mass concentration (ng/g) of each rare earth element in this standard method is respectively: Sc, 0.9; Y, Ce, Pr, Nd, Sm, Eu, Gd , Tb, Dy, Ho, Er, Tm, Yb, Lu are all 0.1.

GB/T 22290-2008 history

• 2012 GB 5009.94-2012 National Food Safety Standard Determination of Rare Earth Element in Foods of Plant
• 2008 GB/T 22290-2008 Determination of rare earth in tea by inductively coupled plasma mass spectrometry

GB/T 22290-2008 Determination of rare earth in tea by inductively coupled plasma mass spectrometry was changed to GB 5009.94-2012 National Food Safety Standard Determination of Rare Earth Element in Foods of Plant.