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