ELEMENTS by Cellulosic Internal Capsule Sampler: METHOD 7306, Issue 1, dated 10 September 2015 - Page 10 of 11
Table 3 continued from page 9 TABLE 3. MEASUREMENT WAVELENGTHS (λ), DETECTION LIMITS (LOD) AND RECOVERY DATA FROM INTERLABORATORY RESULTS Element
Sb Se Sn Sr Te Ti Tl V W Y Zn Zr
WavelengthH (λ), nm
206.833 196.090 189.991 407.771 214.281 334.941 190.864 311.071 207.911 371.030 213.856 339.198
LODI (ug/sample)
0.11 0.14 0.065 0.014 0.22 0.042 0.046 0.0091 0.055 0.0039 0.69 0.0099
Low Level (ug/sample)
5.0 3.0 2.01 2.01 3.0 2.01 3.0 3.02 10.1 2.01 5.2 2.01
% Recovery (%RSD; NJ)
99.1 (6.7; 8) 112 (15; 6) 98.7 (26; 4) 100 (1.9; 6K) 104 (18; 5) 105 (5.7; 7) 102 (7.1; 6) 101 (5.7; 9) 83.0 (12; 5) 101 (3.8; 5) 101 (6.0; 9) 101 (6.2; 5)
Medium level (ug/ sample)
25.1 15.1 7.0 7.1 12.6 7.0 10.1 7.0 25.1 7.1 25.1 7.0
% Recovery (%RSD; NJ)
99.0 (5.7; 9) 109 (8.7; 8) 96.9 (18; 6) 102 (7.5; 7) 103 (7.7; 5) 101 (10; 7) 99.6 (5.8; 7) 102 (6.2; 9) 97.6 (12; 5) 102 (5.9; 5) 101 (4.9; 9) 99.5 (9.2; 6)
High Level (ug/ sample)
40.2 30.1 14.9 15.0 20.1 14.9 20.1 14.9 40.2 15.0 59.7 14.9
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)
100 (3.6; 8K) 104 (10; 8) 103 (5.0; 5K) 101 (6.1; 7) 101 (12; 5) 103 (3.4; 6K) 98.3 (7.5; 7) 102 (5.8; 9) 96.4 (16; 5) 101 (4.8; 5) 101 (4.8; 9) 93.1 (19; 6)
