Analyte
Unspiked
Sample
1 (ppt)
Unspiked
Sample
2 (ppt
Average
Unspiked
Spiked
Sample
1 (ppt)
RSD
(%)
Spiked
Sample
2 (ppt)
RSD
(%)
%
Recovery
Spiked
Sample 1
%
Recovery
Spiked
Sample 2
% Recovery
Range

MDL
(ppt)
Aluminum
2.1
3.2
2.6
7.0
9
7.2
11
86
91
5
5.9
Antimony
0.41
0.39
0.40
4.7
16
4.7
7
86
87
1
0.55
Arsenic
2.2
2.4
2.3
6.4
15
6.4
13
83
82
1
1.6
Barium
0.34
0.32
0.33
4.9
8
4.7
4
91
87
4
0.45
Boron
12.2
11.9
12.0
16.7
14
17.6
14
92
111
19
7.0
Calcium
2.5
2.8
2.6
6.6
7
6.9
14
80
86
6
1.4
Chromium
0.86
1.0
0.9
5.2
9
5.4
7
85
89
4
0.70
Cobalt
0.26
0.35
0.3
5.0
5
4.9
4
93
92
1
0.56
Copper
2.3
2.9
2.6
7.0
20
7.1
12
88
91
3
2.4
Iron
9.2
9.8
9.5
14.7
6
14.2
3
103
94
9
2.7
Lead
1.2
1.2
1.2
6.0
8
5.9
4
96
94
2
0.69
Lithium
0.47
0.44
0.5
5.7
9
5.0
12
104
91
13
1.2
Magnesium
0.66
0.87
0.8
5.6
5
5.5
16
96
94
2
1.1
Manganese
0.95
0.81
0.9
4.9
8
4.8
7
80
78
2
1.6
Nickel
3.0
3.0
3.0
7.1
12
7.4
15
83
89
6
1.5
Potassium
5.1
5.2
5.1
9.1
12
9.2
7
79
81
2
1.3
Sodium
4.5
4.5
4.5
9.6
3
9.9
7
103
109
6
1.8
Tin
5.7
6.1
5.9
10.8
12
10.9
8
97
100
3
2.4
Titanium
4.7
5.2
5.0
10.1
10
10.3
10
103
107
4
2.3
Vanadium
0.23
0.29
0.3
4.8
7
4.8
15
90
91
1
0.32
Zinc
5.8
6.5
6.1
11.3
11
11.5
9
103
108
5
3.0
Table VII: Summary of spike recovery and MDL data for 31% ultra-high-purity hydrogen peroxide analyzed using DRC ICP-MS technology.