Simultaneous Determination of Cr, As, Se, and Other Trace Metal Elements in Seawater by ICP-MS with Hybrid Simultaneous Preconcentration Combining Iron Hydroxide Coprecipitation and Solid Phase Extraction Using Chelating Resin
Table 2
Analytical results for Cr, As, Se and other trace metals in coastal seawater (Izu Oshima, the senzu coast) determined by ICP-MS with hybrid preconcentration combining iron hydroxide coprecipitation and solid phase extraction using chelating resin.
Element
Cell gas mode
m/z
Concentration
Recovery
Blank value/ μgL−1
/ μgL−1
/ μgL−1
Observed / μgL−1
RSD/%
Mean / %
RSD/%
Ti
He
47
0.027 ± 0.009
32.7
96.9 ± 0.85
0.88
n.d.
0.072
0.0074
V
He
51
1.87 ± 0.08
4.0
100.5 ± 0.99
0.99
0.001
0.0024
0.00024
Cr (III)
He
52
0.24 ± 0.02
7.4
96.3 ± 0.5
0.56
0.018
0.013
0.0013
Co
He
59
0.012 ± 0.001
7.1
88.6 ± 0.57
0.64
0.006
0.0012
0.00014
Ni
He
60
0.22 ± 0.01
5.8
105.0 ± 3.2
3.3
0.012
0.0031
0.0031
Cu
He
63
0.17 ± 0.02
10.3
104.7 ± 1.9
2.0
0.034
0.021
0.0021
Zn
He
66
1.85 ± 0.03
1.8
86.8 ± 1.9
2.2
0.077
0.058
0.0067
Ge
He
72
0.72 ± 0.04
5.2
65.5 ± 1.9
2.8
0.31
0.0018
0.00027
As (III + V)
He
75
1.34 ± 0.05
4.0
90.8 ± 0.84
0.92
0.0012
0.0024
0.00026
Se (IV)
H2
78
0.0324 ± 0.0002
0.8
71.1 ± 0.17
0.24
n.d.
0.0021
0.00029
Zr
He
90
0.055 ± 0.004
6.9
85.8 ± 2.3
2.6
n.d.
0.0072
0.00084
Cd
He
111
0.013 ± 0.002
11.7
91.5 ± 0.53
0.58
n.d.
0.0006
0.00007
Sn
He
118
0.065 ± 0.008
12.7
99.1 ± 0.57
0.57
0.0061
0.011
0.0011
Sb
He
121
0.23 ± 0.03
11.5
49.1 ± 0.39
0.80
0.0008
0.0003
0.00006
W
He
182
0.020 ± 0.001
5.1
98.6 ± 0.16
0.17
0.002
0.0029
0.00029
Pb
He
208
0.087 ± 0.01
10.4
98.9 ± 3.8
3.9
0.0023
0.0055
0.00056
U
He
238
3.0 ± 0.2
5.2
103.0 ± 0.010
0.010
n.d.
0.0011
0.00011
(a) Mean ±σ(standard deviation),n=3, The observed values with asterisk were corrected by the blank values over 10% of the observed values. (b) : instrumental detection limit. (c) : analytical detection limit. (d) Not detected.
