NORM and TENORM issues address the radioactivity associated with naturally occurring radionuclides.
NORM stands for Naturally Occurring Radioactive Materials and TENORM means Technologically Enhanced Naturally Occurring Radioactive Materials.
- sediment dredging in harbours and rivers
- mining industry through their waste
- energy production through their waste
- from water treatment through their waste
- consumer products
Gross alpha and gross beta activities, as well as radium-226 and radium-228 are the principle radionuclides measured for NORM and TENORM testing.
ALS can propose more radionuclides to meet your analytical needs using high resolution gamma spectrometry. Contact us to precise your needs.
Here is a short overview of natural radionuclides available in ALS with our standard limits of quantification
|Description||LOQ (1)||Amount needed||TAT (days)|
|Gross Alpha Activity||500 Bq/kg DW||~ 2 g pulverized to <
|Gross Beta Activity||500 Bq/kg DW||~ 2 g pulverized to <
|Gross Beta Activity corrected for K-40||500 Bq/kg DW||~ 5 g pulverized to <
|Radium 226 and radium 228 by HR gamma spectrometry||~1 Bq/kg DW||~ 5 g pulverized to <
|Lead 210 volume activity||25 Bq/kg DW||~ 5 g pulverized to <
|Radium 226 by scintillation emanometry after decomposition and separation||~30 Bq/kg DW||~ 5 g pulverized to <
|Natural radionuclide by HR gamma-spectrometry (U-238, Th-234, Th-230, Ra-226, Pb-210, U-235, Pa-231, Ac-227, Th-227, Ra-223, Ra-228, Th-228, K-40)||
~1 Bq/kg DW
~5 Bq/kg DW (Pa-231)
~10 Bq/kg DW (U-238, Th-234, K-40)~50 Bq/kg DW (Th-230, Pb-210)
|Uranium (U) by photometry||
50 Bq U-238/kg DW(= 4 mg U/kg DW)
|~ 5 g pulverized to <