Page 182 - Analytical method for food addtives

122 Analytical methods for food additives

Reference 16 10 15 22 LOQ = 0.1 µg/mL [RSD = 4.21 %, (n=6)] 14 SD ±2 ppm SD ±2 ppm

Statistical parameters see Table 9.4 Detection limit for nitrite ion is 1 mg/kg. Recoveries for residual nitrite/nitrate ranges from 96 to 108 % and repeatability and reproducibility were satisfactory see Table 9.3 see Table 9.3 Linear calibration curve range 0.1–2.5 µg/mL LOD = 0.034 µg/mL Recovery 99.2 %, RSD 6.1 %

Summary of statistical parameters for nitrites in foods

Extent of validation Full collaborative trial Full collaborative trial Full collaborative trial Precision of method established and applied to real samples (n=15) Internationally accepted methods applied to real samples (n=7)

Meat products, vegetables, baby foods and cheese Meat products Meat products Turkish sucuk

Matrix Vegetables (fermented sausage)

Table 9.2 Method Ion-exchange chromatographic (IC) Spectrometric Ion-exchange chromatographic (IC) Capillary electro- phoresis (CE) Spectrometric