Development of a certified reference material for lead in noodles powder

  • Lori Rastogi
  • A. Durga Prasad
  • R. Manjusha
  • K. DashEmail author
  • Sunil Jai Kumar
General Paper


Food Safety and Standards Authority of India has set maximum permissible level of lead in noodle at 2.5 mg/kg. The standardized lead measurement is of high priority in food matrix to obtain closer comparability of results obtained using routine measurement procedures. For this purpose, certified reference material (CRM) for lead in noodle matrix is required to assess analytical methods performance with respect to their validation, calibration and of comparability of measurements between laboratories. Considering the unavailability of matrix-matched reference materials, National Centre for Compositional Characterization of Materials (BARC-NCCCM) has initiated a program for the production of a noodle CRM for the certification of lead mass fraction. Various parameters for homogeneous spiking were optimized for the production of 2.35 kg of homogeneous noodle matrix. Parameters for sample digestion and minimum sample intake for analytical homogeneity (HE) were established before carrying out the homogeneity test between and within bottles. Homogeneity assessment and stability tests were carried out according to the ISO Guide 34 and 35. The certified value was assigned after inter-laboratory comparison exercise where eight national laboratories of repute from both government and private sector participated.


Certified reference material Lead Noodles Food safety Measurement uncertainty GFAAS 



We sincerely acknowledge the support and inspiration provided by Dr. P. D. Naik—Associate Director Chemistry group, BARC. Authors would also like to thank Dr. B. N. Jagtap, former Director Chemistry group, BARC, for his constant encouragement throughout the work. The authors gratefully acknowledge Heads of Analytical Chemistry Division of BARC, CFTRI—Mysore, NML—Jamshedpur, CEMET—Hyderabad, First Source Laboratory—Hyderabad, NIN—Hyderabad, and BARC-RMP Mysore for their participation in the inter-laboratory comparison exercise.

Supplementary material

769_2018_1367_MOESM1_ESM.doc (56 kb)
Supplementary material 1 (DOC 56 kb)
769_2018_1367_MOESM2_ESM.xls (28 kb)
Supplementary material 2 (XLS 27 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Lori Rastogi
    • 1
  • A. Durga Prasad
    • 1
  • R. Manjusha
    • 1
  • K. Dash
    • 1
    Email author
  • Sunil Jai Kumar
    • 1
  1. 1.National Centre for Compositional Characterisation of MaterialsBhabha Atomic Research CentreHyderabadIndia

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