Speciation Analysis of Arsenic Compounds by High-Performance Liquid Chromatography in Combination with Inductively Coupled Plasma Dynamic Reaction Cell Quadrupole Mass Spectrometry: Application for Vietnamese Rice Samples
Table 2
Concentration (μg·kg−1 dried weight, mean value ± SD, ) of arsenic species and total arsenic in rice samples.
No.
Sample ID
AsB or unretained species
As(III)
DMA
MMA
As(V)
Total iAs
Total
Total
1
R1
41.04 ± 1.22
132.23 ± 4.27
133.01 ± 4.80
2.71 ± 0.08
53.62 ± 5.59
185.85 ± 7.03
362.84 ± 17.91
407.24 ± 39.56
2
R2
106.26 ± 3.17
101.35 ± 3.27
63.71 ± 2.30
2.99 ± 0.09
51.55 ± 5.38
152.9 ± 6.3
325.89 ± 11.94
353.24 ± 19.75
3
R3
30.29 ± 0.9
100.24 ± 3.23
38.47 ± 1.39
<LOD
1.13 ± 0.12
101.37 ± 3.23
170.62 ± 5.3
154.42 ± 12.04
4
R4
18.62 ± 0.56
99.36 ± 3.21
22.57 ± 0.81
2.83 ± 0.09
0.59 ± 0.06
99.95 ± 3.21
143.25 ± 4.64
140.11 ± 10.93
5
R5
15.9 ± 0.47
104.14 ± 3.36
59.44 ± 2.14
<LOD
0.43 ± 0.05
104.57 ± 3.36
180.26 ± 5.95
179.73 ± 14.02
6
R6
12.77 ± 0.38
8.97 ± 0.29
30.86 ± 1.11
<LOD
105.2 ± 10.97
114.17 ± 11
157.03 ± 12.19
148.5 ± 11.58
7
R7
<LOD
99.02 ± 3.19
36.39 ± 1.31
<LOD
38.9 ± 4.06
137.92 ± 5.2
174.31 ± 8.38
189.5 ± 14.78
8
R8
<LOD
12.03 ± 0.39
30.52 ± 1.10
<LOD
100.6 ± 10.49
112.63 ± 10.5
143.14 ± 11.77
153.94 ± 12.01
9
R9
<LOD
79.47 ± 2.56
14.73 ± 0.53
<LOD
39.43 ± 4.11
118.9 ± 4.84
133.63 ± 6.95
142.68 ± 11.13
10
R10
<LOD
111.63 ± 3.6
17.68 ± 0.64
<LOD
65.73 ± 6.86
177.36 ± 7.75
195.04 ± 10.84
236.01 ± 18.41
11
R11
<LOD
93.94 ± 3.03
33.05 ± 1.19
<LOD
34.55 ± 3.6
128.49 ± 4.71
161.53 ± 7.56
169.83 ± 13.25
12
R12
<LOD
75.8 ± 2.45
8.71 ± 0.31
<LOD
63.39 ± 6.61
139.19 ± 7.05
147.91 ± 9.18
156.36 ± 12.2
13
R13
<LOD
94.63 ± 3.05
13.90 ± 0.50
<LOD
71.68 ± 7.48
166.31 ± 8.1
180.21 ± 10.82
187.56 ± 14.63
14
R14
<LOD
86.52 ± 2.79
46.66 ± 1.68
<LOD
71.03 ± 7.41
157.55 ± 7.9
204.21 ± 11.68
211.93 ± 16.53
15
R15
<LOD
84.35 ± 2.72
20.01 ± 0.72
<LOD
42.78 ± 4.46
127.13 ± 5.2
147.31 ± 7.73
151.02 ± 11.78
16
R16
<LOD
68.55 ± 2.21
26.16 ± 0.94
<LOD
52.14 ± 5.44
120.69 ± 5.9
146.85 ± 8.38
154.36 ± 12.04
17
R17
<LOD
93.5 ± 3.02
25.82 ± 0.93
<LOD
64.99 ± 6.78
158.49 ± 7.4
184.31 ± 10.52
191.87 ± 14.97
18
R18
<LOD
98.7 ± 3.18
41.72 ± 1.50
<LOD
129.31 ± 13.49
228.01 ± 13.9
269.73 ± 18.02
283.11 ± 22.08
19
R19
<LOD
84.55 ± 12.07
21.02 ± 2.37
<LOD
29.07 ± 0.76
113.62 ± 12.1
134.64 ± 12.3
283.90 ± 22.23
20
R20
<LOD
86.69 ± 12.38
10.88 ± 1.23
<LOD
43.53 ± 1.14
130.22 ± 12.4
141.1 ± 12.5
176.50 ± 13.82
21
R21
<LOD
57.19 ± 8.16
8.22 ± 0.93
<LOD
16.70 ± 0.44
73.89 ± 8.2
82.11 ± 8.2
124.60 ± 9.76
22
R22
<LOD
64.51 ± 9.21
21.27 ± 2.40
<LOD
0.98 ± 0.03
65.49 ± 9.2
86.76 ± 9.5
152.20 ± 11.92
23
R23
<LOD
78.20 ± 11.16
10.92 ± 1.23
<LOD
1.02 ± 0.03
79.22 ± 11.2
90.14 ± 11.2
150.70 ± 11.80
Total inorganic arsenic was calculated by sum of arsenite and arsenate; total arsenic was calculated by sum up five species; total arsenic was determined by acidic digestion in the microwave oven and measured by total analysis.
