Radioactivity of long lived gamma emitters in canned seafood consumed in Kuwait

Peer review under responsibility of University of Bahrain.

Figures & data

Figure 1 Gamma spectrum for a canned seafood sample, where R, T, and K indicate ²²⁶R, ²³²Th, and ⁴⁰K, respectively.

Figure 2 Activity concentration of ²²⁶Ra.

Table 1 Brand names of types of samples investigated in this study.

Sample no.	Country of origin	Brand name	Type	Wet sample weight (g)	Dried sample weight (g)
1	Japan	Geisha crab meat	Crab	510	100
2	Thailand	Chef’s salmon spread	Salmon	370	100
3	Japan	Geisha sardines in tomato sauce	Sardine	645	85
4	Philippines	Ligo sardines in tomato sauce	Sardine	750	100
5	Philippines	Liyo sardines in chilli sauce	Sardine	750	74
6	Thailand	Liyo squids in natural ink	Squid	455	100
7	Thailand	Alwazzan white meat tuna	Tuna	620	100
8	Thailand	Americana white meat tuna	Tuna	370	95
9	Thailand	California garden white tuna	Tuna	370	100
10	Philippines	Century light tuna flakes hot n spicy	Tuna	720	100
11	Thailand	Dandy white meat tuna	Tuna	660	100
12	Thailand	Daniah white meat tuna in veg oil	Tuna	510	100
13	Japan	Geisha Tuna	Tuna	425	85
14	Italy	Rio Mare Light meat tuna in oil	Tuna	640	100
15	Thailand	Melek white meat tuna	Tuna	570	100

Figure 3 Activity concentration of ⁴⁰K.

Table 2 Activity concentrations (Bq kg⁻¹) of ²³²Th, ²²⁶Ra, and ⁴⁰K in seafood samples in this study, compared with those reported in the literature.

Origin	^232Th	^226Ra	^40K	Reference
Hong Kong	BDL		40–110	Yu et al. (1997)
Italy	BDL	1	21	(Present study)
Japan	BDL	0.6–1	5–35	(Present study)
Philippines	BDL	0.6–2	20–33	(Present study)
Thailand	BDL	0.4–1	17–42	(Present study)

BDL = below detection limit.

Table 3 Activity concentrations (Bq kg⁻¹) of ²³²Th, ²²⁶Ra, and ⁴⁰K in various foodstuffs reported in the literature.

Origin	Foodstuff	^232Th	^226Ra	^40K	Reference
Brazil	Beef			80	Venturini and Sordi (1999)
	Chicken			54	Venturini and Sordi (1999)
	Beans		1	434	Venturini and Sordi (1999)
Hong Kong	Beef			91	Yu et al. (1997)
	Chicken			76	Yu et al. (1997)
Syria	Cereals			300	Al-Masri et al. (2004)

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