Estimation of sample processing uncertainty for chlorpyrifos residue in cucumber

TİRYAKİ O., Baysoyu D.

ACCREDITATION AND QUALITY ASSURANCE, cilt.10, sa.10, ss.550-553, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 10
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1007/s00769-005-0070-z
  • Dergi Adı: ACCREDITATION AND QUALITY ASSURANCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.550-553
  • Anahtar Kelimeler: sample processing, uncertainty, sampling constant, PESTICIDE-RESIDUES
  • Çanakkale Onsekiz Mart Üniversitesi Adresli: Hayır

Özet

Sample processing is a very important component of uncertainty in analytical results. In order to have reliable results, the laboratory sample should be properly processed to obtain statistically homogenous matrix-before the representative test portions are withdrawn for analysis. The use of (14)C-labeled compound is preferable because the analyte can be quantified without cleanup. The method is based on surface treatment of cucumber with (14)C-chlorpyrifos, determination of (14)C-chlorpyrifos activity in the replicate test portions of different size, and determination of the uncertainty of sample processing.