Comparative Study on Two Pretreatment Processes for Chemical Phase Analysis of Gold in Geological Samples by Atomic Absorption Spectrometry
Table 5
Analysis results of phase gold.
Sample
Method
WSS
IECAS
OMBS
IMOBS
NSNS
CBS
SBS
ISS
Weighted value
Leaching rate
LZY01
I
0.211
0.222
21.856
0.024
0.213
0.215
0.272
21.585
44.598
94.92
(0.47)
(0.50)
(49.01)
(0.05)
(0.48)
(0.48)
(0.61)
(48.40)
II
0.224
0.238
0.240
0.026
0.216
0.384
22.261
21.572
45.161
96.12
(0.50)
(0.53)
(0.53)
(0.06)
(0.48)
(0.85)
(49.29)
(47.77)
LZY02
I
0.000
0.019
4.456
0.002
0.011
0.005
0.036
0.065
4.594
115.43
(0.00)
(0.41)
(97.00)
(0.04)
(0.24)
(0.11)
(0.78)
(1.41)
II
0.006
0.006
0.051
0.007
0.003
0.032
3.079
0.605
3.789
95.20
(0.16)
(0.16)
(1.35)
(0.18)
(0.08)
(0.84)
(81.26)
(15.97)
LZY03
I
0.118
0.112
12.906
0.015
0.133
0.031
0.158
11.439
24.912
95.60
(0.47)
(0.45)
(51.81)
(0.06)
(0.53)
(0.12)
(0.63)
(45.92)
II
0.125
0.194
1.163
0.014
0.115
0.792
11.153
11.817
25.373
97.36
(0.49)
(0.76)
(4.58)
(0.06)
(0.45)
(3.12)
(43.96)
(46.57)
LZY04
I
0.000
0.012
2.105
0.001
0.000
0.003
0.110
0.109
2.340
127.17
(0.00)
(0.51)
(89.96)
(0.04)
(0.00)
(0.13)
(4.70)
(4.66)
II
0.000
0.019
0.203
0.003
0.000
0.041
1.113
0.180
1.559
84.73
(0.00)
(1.22)
(13.02)
(0.19)
(0.00)
(2.63)
(71.39)
(11.55)
LZY05
I
0.000
0.019
1.566
0.002
0.000
0.003
0.016
0.004
1.610
108.05
(0.00)
(1.18)
(97.27)
(0.12)
(0.00)
(0.19)
(0.99)
(0.25)
II
0.000
0.006
0.213
0.001
0.000
0.042
1.129
0.046
1.437
96.44
(0.00)
(0.42)
(14.82)
(0.07)
(0.00)
(2.92)
(78.57)
(3.20)
LZS01
I
0.000
0.000
0.030
0.010
0.035
0.006
0.072
0.010
0.163
92.61
(0.00)
(0.00)
(18.40)
(6.13)
(21.47)
(3.68)
(44.17)
(6.13)
II
0.000
0.006
0.022
0.002
0.000
0.023
0.096
0.044
0.193
109.66
(0.00)
(3.11)
(11.40)
(1.04)
(0.00)
(11.92)
(49.74)
(22.80)
I: ultrasonic centrifugation; II: cyclotron oscillation; WSS: water-soluble state; IECAS: ion exchange and clay adsorption state; OMBS: organic matter bound state; IMOBS: iron-manganese oxide bound state; NSNS: naked or seminaked state; CBS: carbonate bound state; SBS: sulfide bound state; ISS: insoluble silicate state. Among the eight phase states, the value outside the parentheses is the content of gold in each phase, and the unit is 10−6; the value in parentheses is the ratio of the phase gold content to the weighted value, and the unit is %. The weighted value is the sum of the eight phase gold contents, and the unit is 10−6; the leaching rate is the ratio of the weighted value to the total content, and the unit is %.
