Page:NIOSH Manual of Analytical Methods - 7304.pdf/8
ELEMENTS by ICP (Microwave Digestion): METHOD 7304, Issue 1, dated 25 June 2014 - Page 8 of 11
Table 3. MEASUREMENT WAVELENGTHS AND RECOVERY DATA Lower Level(4,5) Element
Wavelength (nm)
LOD (µg/ sample)
µg/ sample
N=
Percent Recovery
Ag
328.07
0.1
3.00
5
63.01
Al
308.22
2
50.25(4)
6
89.78
Al(2)
308.214
0.5
15.0
5
As
193.76
2
15.0
5
Ba
493.41
0.2
1.50
B
249.68
0.4
Be
313.04
0.008
Ca
315.89
Ca
(1)
Higher Level(5) Precision
Precision
µg/ N= sample
Percent Recovery
0.0739
300
6
3.92
0.0865
0.0565
1500
6
100.71
0.0055
115.05
0.0199
1500
6
105.17
0.0056
93.29
0.0570
1500
6
115.84
0.0174
5
107.16
0.0295
150
6
102.22
0.0104
7.50
5
86.38
0.0277
750
6
101.19
0.0082
0.152
6
102.38
0.0861
15.2
6
107.71
0.0091
151
6
94.64
0.0512
4500
6
116.25
0.0153
(4)
(Sr)
(Sr)
315.88
2
45.0
5
104.82
0.0090
4500
6
98.13
0.0066
Cd
228.80
0.2
3.00
5
109.65
0.0316
300
6
111.68
0.0152
Co
228.62
0.7
7.50
5
89.87
0.0338
750
6
114.15
0.0141
(2)
Cr
267.72
0.7
7.50
5
112.65
0.0233
750
6
118.65
0.0136
Cr(2) Cu
267.71
0.3
7.50
5
102.60
0.0048
750
6
92.98
0.0066
324.75
0.08
1.50
5
106.84
0.0364
150
6
100.42
0.0058
(2)
Cu
324.75
0.08
1.50
5
117.16
0.0361
150
6
103.13
0.0150
Fe
259.94
15
30
5
120.58
0.0405
3000
6
112.41
0.0083
Fe(2)
259.94
5
30
5
112.55
0.0489
3000
6
97.20
0.0085
K
766.49
3
100(4)
6
85.57
0.0254
3000
6
86.46
0.0260
K
766.49
100
6
99.40
0.0300
3000
6
90.02
0.0205
Li
670.78
0.06
1.50
5
97.51
0.0253
150
6
81.96
0.0378
Mg
279.08
0.9
15.0
5
105.25
0.0088
1500
6
97.47
0.0077
(2)
(4)
Mg
279.07
0.4
15.0
5
107.33
0.0043
1500
6
101.75
0.0058
Mn
257.61
0.09
1.50
5
110.24
0.0150
150
6
115.56
0.0090
Mo
202.03
0.4
4.50
5
87.79
0.0433
450
6
120.57
0.0093
Mo(2)
202.029
0.3
4.50
5
89.75
0.0215
450
6
100.44
0.0154
Na
589.00
5
75.0
6
124.56
0.0859
7500
6
83.07
0.0248
Ni
231.60
0.3
4.50
5
102.93
0.0475
450
6
110.59
0.0080
Ni(2)
231.60
0.2
4.50
5
109.91
0.0047
450
6
101.77
0.0139
P
214.92
2
30.0
5
81.82
0.0511
3000
6
107.20
0.0103
(2)
P
214.91
2
30.0
5
86.36
0.0077
3000
6
103.33
0.0174
Pb
220.35
1
15.0
5
95.85
0.0308
1500
6
100.54
0.0154
Pt
203.65
9
150
5
104.67
0.0182
15000
6
105.19
0.0088
206.84
0.7
15.0
6
25.29
0.5861
1500
6
111.95
0.0086
(2)
Sb
(3)
(1) Values reported were obtained with a Fisons ARL Accuris ICP-AES unless otherwise noted; performance may vary with instrument and should be independently verified. (2) Values reported were obtained with a Perkin Elmer Optima 3000 DV ICP-AES. (3) Elements that were evaluated and found not suitable for analysis by this method. (4) Values given (lower level) are for the 10xLOQ level due to low recoveries at the 3xLOQ level. (5) LOQ = Estimated limit of quantitation
NIOSH Manual of Analytical Methods (NMAM), Fifth Edition