Instrumental neutron activation analysis of marine sediment in-house reference material

Abstract

ABSTRACT

Reference materials play an important role in demonstrating the quality and reliability of analytical data. The advantage of using in-house reference materials is that they provide a relatively cheap option as compared to using certified reference material (CRM) and can closely resemble the laboratory’s routine test sample.  A marine sediment sample was designed as an in-house reference material, in the framework of quality assurance and control (QA/QC) program of the Neutron Activation Analysis (NAA) Laboratory at Nuclear Malaysia. The NAA technique was solely used for the homogeneity test of the marine sediment sample. The CRM of IAEA- Soil 7 and IAEA- SL1 (Lake Sediment) were applied in the analysis as compatible matrix-based reference materials for QA purposes.

 ABSTRAK 

Bahan rujukan memainkan peranan penting dalam memberi petunjuk kualiti dan keyakinan terhadap data analisis. Kelebihan menggunakan bahan rujukan ‘in-house’ adalah ia menyediakan pilihan yang lebih murah berbanding bahan rujukan pawai dan ia boleh lebih menyerupai sampel ujian rutin makmal. Satu sampel sedimen marin telah dipilih sebagai bahan rujukan ‘in-house’ dalam struktur program kualiti jaminan dan kawalan  (QA/QC) Makmal Analisis Pengaktifan Neutron (APN) di Nuklear Malaysia. Hanya teknik APN yanf digunakan untuk ujian kehomogenan sampel sedimen marin. Bahan Rujukan Piawai IAEA- Soil 7 dan IAEA- SL1 (Sedimen Tasik)telah digunakan dalam analisis ini sebagai bahan rujukan yang mempunyai matrik bersesuaian untuk tujuan kualiti jamianan.