standard deviation of the replicate analyses. The LOQ was set at 3 times LOD. The LOD and LOQ were determined in three types of sample matrices. The analyses were performed with fruit juice, canned jam and infant formula which were representative for liquid, semi-solid and solid sample matrices, respectively. Both the LOD and LOQ values are shown in Table 1. Specifically, the LOD values were 0.2, 0.5 and 0.3 ng g1 while the LOQ values (ng g1) were 0.5 for fruit juice (liquid sample matrix), 1.5 for canned jam (semi-solid sample matrix), and 1.0 for infant formula (solid sample matrix).