Table 4.

Descriptive statistics concerning the chemical characterization and quantification of total TiO₂ particles (Ps-Tot), dissolved Ti (mg/kg), and total Ti in packaged seafood products.

Canned Tuna	Most Frequent Size Ps-Tot. (nm)	Mean Diameter Ps-Tot. (nm)	Number of Ps-Tot/g.	Ps-Tot. mg/kg	Dissolved Ti a mg/kg	Total Ti b mg/kg
Mean	73	104	9.77 × 107	0.117	0.851	1.015
SD	11	12	6.27 × 107	0.156	0.099	0.121
Min.	59	87	1.93 × 107	0.029	0.752	0.857
Max.	98	126	2.86 × 108	0.634	1.052	1.152
Canned Mackerel	Most Frequent size Ps-Tot. (nm)	Mean Diameter Ps-Tot. (nm)	Number of Ps-Tot/g.	Ps-Tot. mg/kg	Dissolved Ti a mg/kg	Total Ti b mg/kg
Mean	85	112	1.47 × 107	0.025	0.835	1.154
SD	11	11	7.17 × 106	0.021	0.095	0.108
Min.	69	95	8.15 × 106	0.007	0.669	0.951
Max.	104	133	2.72 × 107	0.068	1.003	1.185
Canned Anchovy	Most Frequent size Ps-Tot. (nm)	Mean Diameter Ps-Tot. (nm)	Number of Ps-Tot/g.	Ps-Tot. mg/kg	Dissolved Ti a mg/kg	Total Ti b mg/kg
Mean	113	141	1.67 × 107	0.059	1.223	1.385
SD	7	8	3.12 × 106	0.019	0.051	0.148
Min.	101	127	1.06 × 107	0.026	1.141	0.985
Max.	122	150	2.02 × 107	0.087	1.312	1.485
Canned Clam	Most Frequent size Ps-Tot. (nm)	Mean Diameter Ps-Tot. (nm)	Number of Ps-Tot/g.	Ps-Tot. mg/kg	Dissolved Ti a mg/kg	Total Ti b mg/kg
Mean	82	138	1.05 × 108	0.326	1.313	1.458
SD	6	13	1.52 × 107	0.084	0.210	0.341
Min.	75	124	7.00 × 107	0.162	1.005	1.145
Max.	91	167	1.00 × 108	0.451	1.735	1.915

^a Ultrasound-assisted alkaline digestion and spICP-MS determination. ^b Microwave-assisted acid digestion and ICP-MS determination in standard mode.