ELEMENTS by Cellulosic Internal Capsule Sampler: METHOD 7306, Issue 1, dated 10 September 2015 - Page 9 of 11
TABLE 3. MEASUREMENT WAVELENGTHS (λ), DETECTION LIMITS (LOD) AND RECOVERY DATA FROM INTERLABORATORY RESULTS Element
Ag Al As Ba Be Ca Cd Co Cr Cu Fe In K La Li Mg Mn Mo Ni P Pb
WavelengthH (λ), nm
328.068 396.152 189.042 455.404 313.042 315.887 226.502 228.616 267.716 324.754 259.941 230.606 766.491 408.672 670.780 279.079 294.921 202.095 231.604 178.287 220.353
LODI (ug/sample)
0.020 0.38 0.099 0.55 0.0064 3.9 0.0052 0.0090 0.28 0.15 5.3 0.26 0.70 0.026 0.010 1.1 0.031 0.021 0.56 0.27 0.062
Low Level (ug/sample)
5.0 10.6 5.0 2.21 2.01 114 2.01 2.01 2.91 3.16 21.3 5.0 10.6 3.01 2.01 12.7 2.01 2.01 2.01 10.1 10.0
% Recovery (%RSD; NJ)
93.2 (17; 7) 95.7 (6.1; 7) 99.4 (7.3; 7) 97.0 (8.4; 8) 101 (4.4; 9) 95.8 (16; 8) 101 (3.6; 9) 103 (6.8; 9) 80.2 (16; 8) 100 (4.5; 8K) 107 (15; 9) 92.1 (33; 5) 89.0 (36; 5) 101 (8.1; 4) 93.0 (8.5; 7) 93.9 (16; 7) 99.8 (7.6; 9) 101 (6.2; 9) 108 (9.6; 9) 104 (9.0; 5) 101 (6.2; 9)
Medium level (ug/ sample)
10.1 30.9 20.2 7.3 7.0 165 7.0 7.0 7.9 15.1 41.0 14.9 15.7 10.1 7.0 27.9 7.0 7.1 7.0 24.9 25.2
% Recovery (%RSD; NJ)
83.5 (26; 7) 95.7 (3.1; 7) 103 (5.3; 8) 96.9 (2.5; 7K) 101 (6.8; 9) 97.4 (15; 8) 101 (4.0; 9) 102 (5.7; 9) 96.3 (7.2; 9) 101 (4.0; 9) 104 (5.5; 9) 90.8 (27; 5K) 98.0 (24; 6) 102 (7.2; 4) 94.9 (7.0; 7) 98.7 (9.1; 7) 100 (6.1; 9) 102 (4.8; 9) 104 (7.4; 9) 103 (8.9; 6) 100 (5.3; 9)
High Level (ug/ sample)
20.1 60.8 40.1 15.2 14.9 215 14.9 14.9 15.8 29.9 80.5 39.7 20.7 20.1 14.9 103 14.9 15.0 14.9 99 100
Commonly used wavelength; choose wavelength appropriate for your instrument settings [3,4] LOD values calculated using the responses of 7 media blanks, prepared following the microwave sample preparation in NIOSH 7302 J Mean recovery & relative standard deviation for N = number of laboratories reporting results for each element K Excludes outlier(s) (Grubbs’ test) H I
NIOSH Manual of Analytical Methods (NMAM), Fifth Edition
% Recovery (%RSD; NJ)
68.2 (52; 7) 96.2 (2.4; 7) 102 (5.8; 8) 99.9 (5.0; 8) 100 (5.1; 9) 95.8 (13; 8) 102 (1.9; 8) 102 (5.8; 9) 97.2 (3.5; 9) 100 (3.2; 9) 103 (5.4; 9) 86.2 (32; 5) 106 (20; 6) 99.9 (7.9; 4) 98.6 (5.2; 7) 101 (7.2; 7) 100 (5.7; 9) 102 (5.2; 9) 103 (7.0; 9) 102 (1.7; 5K) 100 (7.3; 9)
