Radioactivity concentration		Supplementary item
Products generated from natural resources --ALL-- coal ash (fly ash, etc.) lignite ash (fly ash, etc.) peat ash (fly ash, etc.) Cerium hydrate Cerium nitrate Cerium oxide Composite rare-earth chloride Didymium carbonate Gadolinium oxide Lanthanum oxide Neodymium oxide Praseodymium oxide Rare-earth carbonate Rare-earth fluoride Rare-earth oxide Samarium oxide Sm-Gd concentrate carbonate Terbium oxide Yttrium oxide cement intermediate product from fertilizer plant nitrogen fertilizer phosphate fertilizer phosphogypsum phosphoric acid refined oil scale of oil sedment from fertilizer plant sludge of aluminium industry sludge of oil solis waste from fertilizer plant titanium dioxide titanium dioxide pigment waste of iron oxide wastewaters from fertilizer plant	Country --ALL-- BRAZIL D CONGO ITALY SU ARAB SYRIA TUNISIA USA	Material name 　　Method of measurement 　　Remarks

Result: 21 1   |   2            　 Display number of records:   1 - 20 / 21
#	Class name	Country Region	Type of representative value Sample	Radioactivity concentration
				U-238series		Th-232series		K-40
				U-238 (Bq/kg) Representative value Lowest  Highest	Ra-226 (Bq/kg) Representative value Lowest  Highest	Th-232 (Bq/kg) Representative value Lowest  Highest	Ra-228 (Bq/kg) Representative value Lowest  Highest	K-40 (Bq/kg) Representative value Lowest  Highest
1 Reference	scale of oil	BRAZIL exploration unit of Sergipe and Alagoas	median 12
2 Reference	scale of oil	BRAZIL petroleum industry	median (calcurated by NIRS) 5
3 Reference	scale of oil	BRAZIL Campos Basin oilfield operator	mean 18
4 Reference	scale of oil	D CONGO oil gas production plant	single 1
5 Reference	scale of oil	D CONGO oil gas production plant	single 1
6 Reference	scale of oil	ITALY oil gas production plant	single 1
7 Reference	scale of oil	ITALY oil gas production plant	single 1
8 Reference	scale of oil	ITALY oil gas production plant	single 1
9 Reference	scale of oil	ITALY oil gas production plant	single 1
10 Reference	scale of oil	ITALY oil gas production plant	single 1
11 Reference	scale of oil	ITALY oil gas production plant	single 1
12 Reference	scale of oil	SU ARAB Riyadh City Refinery	mean 5
13 Reference	scale of oil	SU ARAB Riyadh City Refinery	mean 4
14 Reference	scale of oil	SYRIA oilfield	mean 152
15 Reference	scale of oil	TUNISIA oil gas production plant	single 1
16 Reference	scale of oil	TUNISIA oil gas production plant	single 1
17 Reference	scale of oil	TUNISIA oil gas production plant	single 1
18 Reference	scale of oil	USA petroleum exploration and production site (Oklahoma)	mean 10
19 Reference	scale of oil	USA petroleum exploration and production site (Texas)	mean 20
20 Reference	scale of oil	USA petroleum exploration and production site (Kentucky)	mean 10

---

■****: No data.
■Radioactivity concentration: Raw data were obtained from references and experiments.
■Type of the representative value: [Median], [Mean], and [Single] denote median, mean, and single values from the raw data, respectively. [Median (calculated by the NIRS)] denotes the median value calculated by the NIRS from the raw data.
■Representative value: The representative value from the raw data.
■Lowest: Lowest value from the raw data.
■Highest: Highest value from the raw data.
■Sample: Number of raw data obtained from references and experiments.