Advances in Materials Science and Engineering Assessment of Gamma Radiation Hazards Related to Geologic Materials: Comparison of Results by Field Gamma Spectrometry and Laboratory Methods

Table 1

Spearman correlation coefficients between the calculated values of the concentration activity index () from different procedures for estimation of isotopes specific activity and related values.

	N	R	value
(field) and (ICP/XRF)	23	0.83	1.08 × 10^−6
(field) and (LGS)	23	0.87	5.71 × 10^−8
(ICP/XRF) and (LGS)	23	0.95	3 × 10^−12

LGS: laboratory gamma spectrometry.