Page:NIOSH Manual of Analytical Methods - 7306.pdf/11
ELEMENTS by Cellulosic Internal Capsule Sampler: METHOD 7306, Issue 1, dated 10 September 2015 - Page 11 of 11
TABLE 4. RANGE, BIAS, PRECISION ( Sr and ŜrT) AND ACCURACY DATA FROM INTERLABORATORY RESULTS Element nL Range, ug/sample Bias ŜrTN SrM
Accuracy (%)
Ag
21
5.0 to 20.1
-0.184
0.041
0.065
29.0
Al
21
10.6 to 60.8
-0.0414
0.006
0.050
12.4
As
23
5.0 to 40.1
0.0141
0.016
0.052
10.7
Ba
23
2.21 to 15.2
-0.0206
0.036
0.062
12.8
Be
27
2.01 to 14.9
0.00536
0.025
0.056
11.0
Ca
24
114 to 215
-0.0367
0.001
0.050
11.9
Cd
26
2.01 to 14.9
0.0133
0.022
0.055
11.1
Co
27
2.01 to 14.9
0.0238
0.036
0.062
12.9
Cr
26
2.91 to 15.8
-0.0281
0.046
0.068
14.4
Cu
26
3.16 to 29.9
0.00347
0.017
0.053
10.4
Fe
27
21.3 to 80.5
0.0476
0.011
0.051
13.2
In
15
5.0 to 39.7
-0.103
0.056
0.075
22.6
K
17
10.6 to 20.7
-0.0239
0.029
0.058
12.3
La
12
3.01 to 20.1
0.0119
0.025
0.056
11.2
Li
21
2.01 to 14.9
-0.0447
0.039
0.064
14.9
Mg
21
12.7 to 103
-0.0219
0.012
0.051
10.9
Mn
27
2.01 to 14.9
0.00127
0.039
0.063
12.4
Mo
27
2.01 to 15.0
0.0169
0.032
0.060
12.1
Ni
27
2.01 to 14.9
0.0498
0.055
0.074
17.2
P
16
10.1 to 99
0.0310
0.010
0.051
11.5
Pb
27
10.0 to 100
0.00439
0.006
0.050
9.9
Sb
25
5.0 to 40.2
-0.00631
0.013
0.052
10.2
Se
22
3.0 to 30.1
0.0864
0.055
0.075
20.9
Sn
15
2.01 to 14.9
-0.00541
0.117
0.128
25.0
Sr
20
2.01 to 15.0
0.00930
0.011
0.051
10.2
Te
15
3.0 to 20.1
0.0256
0.063
0.081
16.6
Ti
20
2.01 to 14.9
0.0305
0.032
0.059
13.1
Tl
20
3.0 to 20.1
0.00128
0.030
0.058
11.4
V
27
3.02 to 14.9
0.0143
0.020
0.054
10.9
W
15
10.1 to 40.2
-0.0240
0.010
0.051
11.0
Y
15
2.01 to 15.0
0.00971
0.020
0.054
10.7
Zn
27
5.2 to 59.7
0.00873
0.013
0.052
10.3
Zr
17
2.01 to 14.9
-0.0206
0.033
0.060
12.4
n = total number of results reported for each element by up to 9 participating laboratories minus outliers (Grubbs’ test, 1% confidence level) L
M
N
Sr = precision [17] ŜrT = overall precision =
2
S r +(0.05)2 ; same as total precision as defined in [18,20]
NIOSH Manual of Analytical Methods (NMAM), Fifth Edition