Page 78 - Application Notebook - Solution for Food Safety

Application No.C140
News

Q Real Samples Analysis
Nine honey samples purchased at the local supermarket or used as raw materials in cosmetics (orange tree honey)
were assayed as unknowns.
All tested honeys showed concentrations far below the authorized maximum residue limit. But thanks to the very high
sensitivity reached, even low concentrations of neonicotinoids were quantified. Results are presented in table 5.
A representative chromatogram of a sample honey is shown in Fig. 3.

Table 5 Honey Samples Results (concentrations in μg/kg)
Honey Acetamiprid Clothianidin Imidacloprid Thiacloprid Thiamethoxam
1. Provence creamy --- --- 0.20 --- 0.010
2. Italy creamy 0.15 --- 0.17 --- ---
3. Pyrenees liquid 0.38 --- 0.043 0.020 ---
4. French-Spanish creamy 0.27 --- 0.047 0.020 ---
5. Thyme liquid --- --- --- --- ---
6. Lemon tree creamy 1.7 --- 0.15 0.033 ---
7. Orange tree liquid 1.2 --- 0.62 --- ---
8. Flowers creamy 0.14 --- 0.055 0.39 ---
9. Flowers liquid 0.34 --- 0.11 0.010 ---

Acetamiprid-N-
Honey Dinotefuran Nitenpyram Fipronil Fipronil sulfone
desmethyl
1. Provence creamy --- 0.052 0.005 --- ---
2. Italy creamy --- 0.040 --- --- ---
3. Pyrenees liquid --- --- 0.015 0.004 ---
4. French-Spanish creamy --- 0.032 --- --- ---
5. Thyme liquid --- --- --- --- ---
6. Lemon tree creamy --- --- 0.020 --- ---
7. Orange tree liquid --- 0.024 0.018 --- ---
8. Flowers creamy --- --- 0.016 --- ---
9. Flowers liquid --- --- 0.006 --- ---

Acetamiprid Acetamiprid-N-desmethyl Chlothianidin Dinotefuran Fipronil
Q 223.10 > 126.00 2.18e5 Q 209.05 > 126.05 6.09e3 Q 250.10 > 169.10 1.15e3 Q 203.00 > 114.10 2.25e3 Q 435.00 > 330.00 2.31e3
6.0e3 2.2e3
2.0e5 5.5e3 3.5e3 5.0e3
2.0e3
1.8e5 5.0e3 4.5e3
3.0e3 1.8e3
1.6e5 4.5e3 4.0e3
1.6e3
1.4e5 4.0e3 2.5e3 3.5e3
1.4e3
3.5e3
1.2e5 3.0e3
2.0e3 1.2e3
3.0e3
1.0e5 2.5e3 1.0e3
2.5e3 1.5e3
8.0e4 2.0e3 8.0e2
2.0e3
6.0e4 1.0e3 1.5e3 6.0e2
1.5e3
4.0e4 1.0e3 1.0e3 4.0e2
5.0e2
2.0e4 5.0e2 5.0e2 2.0e2
0.0e0 0.0e0 0.0e0 0.0e0 0.0e0
2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.00 2.05 2.10 2.15 2.20 2.25 2.30 1.50 1.55 1.60 1.65 1.70 1.75 1.80 3.00 3.05 3.10 3.15 3.20 3.25 3.30 3.35
Fipronil sulfone Imidacloprid Nitenpyram Thiacloprid Thiamethoxam
Q 451.00 > 282.00 1.31e2 Q 256.10 > 175.10 1.62e4 Q 271.00 > 126.00 1.56e3 Q 253.10 > 126.00 2.18e4 Q 292.10 > 211.10 1.12e3
1.6e4 7.0e3 1.1e3
1.8e2 2.0e4 1.0e3
1.4e4 6.0e3
1.6e2 1.8e4 9.0e2
1.2e4 1.6e4
1.4e2 5.0e3 8.0e2
1.4e4 7.0e2
1.2e2 1.0e4
4.0e3 1.2e4
1.0e2 8.0e3 6.0e2
1.0e4 5.0e2
3.0e3
8.0e1
6.0e3 8.0e3 4.0e2
6.0e1 2.0e3 6.0e3
4.0e3 3.0e2
4.0e1
4.0e3 2.0e2
2.0e3 1.0e3
2.0e1 2.0e3 1.0e2
0.0e0 0.0e0 0.0e0 0.0e0 0.0e0
3.05 3.10 3.15 3.20 3.25 3.30 3.35 3.40 2.00 2.05 2.10 2.15 2.20 2.25 2.30 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 2.25 2.30 2.35 2.40 2.45 2.50 2.55 1.80 1.85 1.90 1.95 2.00 2.05 2.10
Fig. 3 Chromatogram of a Sample Honey (Pyrenees)