Table 8.9
Results of the analysis of NBS SRM 1566
(oyster tissue) (llgg- 1
)
by INAA with ENAA and RNAA (from [558])
ENAAb
RNAAc
Element
Isotope
X
± s
CV
LD
X
± s
CV
LD
NBS value
As
76As
11.96
± 0.56 4.1
0.16
15.87
± 3.5 22.0
1.80
13.49
± 1.9
Br
82Br
51.70
± 7.1 13.7
0.62
50.57
± 0.45 0.9
0.26
(55)a
Co
60Co
0.39
± 0.06 15.4
0.08
0.44
± 0.07 15.9
0.02
(O.4)a
K
42K
8600
± 300
3.5
165
8200
± 700
8.5
72.4
9700
± 500
Mn
s6Mn
16.57
± 0.97 5.8
0.16
17.50
± 1.2
Na
24Na
4200
± 300
4.1
11.2
4700
± 200 4.2
3.0
5100
± 300
Sr
87Srm
10.99
± 0.76 6.9
1.15
10.36
± 0.56
Zn
69Z
n m
848.5
± 4.5
5.3
25.6
852.0
± 14.0
Irradiation time
1.0 h
1.0 h
Cooling time
1.0-2.0
h
4-6
days
Counting time
3600
s
3600
s
Ag
llOAgm
0.86
± 0.09 10.5
0.024
0.93
± 0.06
6.4
0.016
0.89
± 0.09
Br
82Br
52.90
± 3.3
6.2
1.6
(55)a
Co
60Co
0.42
± 0.07
0.010
0.34
± 0.01 2.9
0.001
(O.4)a
Cr
SICr
0.75
± 0.10 13.3
0.036
0.69
± 0.27
Fe
s9Fe
212,5
± 37.0 16.7
6.2
218.9
± 9.0 4.1
2.8
195.0
± 34
Mo
99Mo_99Tc
0.16
± 0.04 25.0
0.016
(:S
0.2)a
Ni
S8Co
0.98
± 0.10 10.2
0.01
1.03
± 0.19
Rb
86Rb
5.08
± 0.10 2.0
0.07
4.27
± 0.19 4.4
1.2
44.45
± 0.09
Sc
46Sc
0.015
± 0.002 13.3
0.0004
Se
7SSe
2.04
± 0.04 2.0
0.041
2.21
± 0.08 3.6
0.02
2.10
± 0.5
Zn
6SZn
887.60
± 10.0
1.1
0.56
884.60
± 17.0 19.2
0.18
852.0
± 14.0
Irradiation time
48
h
48
h
Cooling time
15-21
d
50-70
days
Counting time
7200
s
7200
s
Ii
a
Values in parentheses are recommended values
b Arithmetic mean (X)
± standard deviation from five parallel determinations.
C
Arithmetic mean (X)
± standard deviation from eight parallel determinations.
d
All values are arithmetic means (X)
± standard deviation from ten parallel determinations.
i§i