| Element |
Addition experiments |
CRM baking chocolate (mg/kg) |
LOD |
LOQ |
| |
Spiked (µg/L) |
Recovery
(%) |
Certified |
Found |
(µg/kg) |
(µg/kg) |
| Al |
500 |
92 |
n. r.* |
- |
300 |
1000 |
| Ba |
500 |
106 |
n. r.* |
- |
50 |
170 |
| Cu |
500 |
100 |
23.2 ± 1.2 |
22.8 ± 0.2 |
20 |
70 |
| Fe |
500 |
114 |
132 ± 11 |
131 ± 1 |
160 |
530 |
| Mn |
500 |
107 |
20.3 ± 1.3 |
19.9 ± 0.2 |
11 |
37 |
| Sr |
20 |
96 |
n. r.* |
- |
4 |
15 |
| Zn |
500 |
103 |
36.6 ± 1.7 |
36.1 ± 0.3 |
250 |
850 |
| As |
20 |
116 |
n. r.* |
- |
0.2 |
0.6 |
| Co |
20 |
99 |
n. r.* |
- |
1.5 |
5 |
| Cr |
500 |
103 |
n. r.* |
- |
27 |
90 |
| Ni |
20 |
102 |
n. r.* |
- |
0.9 |
3.2 |
| Se |
20 |
122 |
n. r.* |
- |
0.5 |
1.9 |
| V |
20 |
106 |
n. r.* |
- |
1.3 |
4.3 |
* n. r.: not reported |
|
