Fig. 1. Sample collection position and photos of samples
(a): Weathering at the bottom of Yardang near the No.2 water source of Dahaidao; (b): Sample collection position; (c): Photos of samples
Fig. 2. Photos of three samples under orthogonal polarization and single polarization
061-1, 061-2: 100X; 061-3: 250X
Fig. 3. X-ray diffraction patterns of 061-1 (a), 061-2 (b) and 061-3 (c)
Fig. 4. Pore size distribution of three samples
Fig. 5. SEM photos of salt crystallization of three samples
Fig. 6. FTIR spectra of salts from three samples
Fig. 7. Raman spectra of salts from three samples
(a): 061-1; (b): 061-2; (c): 061-3
样品名称 | 样品位置 | 石英 | 斜长石 | 微斜长石 | 方解石 | 石膏 | 石盐 | 粘土矿物 |
---|
蒙脱石 | 伊利石 | 绿泥石 |
---|
061-1 | 第一层 | 44 | 29 | 7 | 3 | 1 | - | 15.6 | 0.2 | 0.2 | 061-2 | 第二层 | 44 | 18 | 10 | 6 | - | 3 | 17.6 | 0.8 | 0.6 | 061-3 | 第三层 | 30 | 21 | 11 | 5 | - | - | 28.7 | 2.3 | 2.0 |
|
Table 1. XRD semi quantitative analysis results of three rock samples(%)
样品编号 | 样品位置 | 离子相对含量/(mg·L-1) |
---|
Na+ | K+ | Ca2+ | Mg2+ | Cl- | S | N |
---|
061-1 | 第一层 | 3.12 | 0.036 4 | 0.162 | 0.015 4 | 0.608 | 3.26 | 0.231 | 061-2 | 第二层 | 12.88 | 0.144 | 9.16 | 0.854 | 22.92 | 0.164 | 0.632 | 061-3 | 第三层 | 2.64 | 0.029 5 | 0.128 | 0.0137 | 1.86 | 0.559 | 0.846 |
|
Table 2. Ion chromatography analysis results of three samples(mg·L-1)
编号 | N | O | Na | Mg | S | Cl | Ca |
---|
1 | - | 16.9 | 26.2 | - | 1.8 | 55.1 | - | 2 | - | 45.9 | 27.9 | - | 26.2 | - | - | 3 | 4.1 | 50.4 | 29.5 | - | 16.0 | - | - | 4 | 5.5 | 46.0 | - | 0.7 | - | 23.0 | 24.8 | 5 | 5.4 | 47.4 | - | 2.6 | - | 24.2 | 20.5 | 6 | - | 51.6 | 4.0 | - | 20.6 | - | 23.8 | 7 | - | 3.1 | 33.0 | - | - | 63.9 | - | 8 | 15.0 | 50.5 | 28.0 | - | - | 6.4 | - |
|
Table 3. EDS analysis results of salt crystallization of three samples(Wt%)
物质名称 | 反对称伸缩 | 对称伸缩 | 面外弯曲 | 面内弯曲 | 不对称变角振动 | 对称变角振动 |
---|
标准NaNO3 | 1 379, 1 353 | | 837 | | | | 标准Ca(NO3)2·4H2O | 1 437, 1 367 | 1 047 | 815 | 748 | | | 标准无水Na2SO4 | | 1 118 | | | 635, 610 | 474 | 061-1(N) | 1 384, 1 360 | | 834 | | | | 061-2(N) | 1 429, 1 384 | 1 050 | 820 | 750 | | | 061-3(N) | 1 360 | | 834 | | | | 061-1(S) | | 1 115 | | | 639, 651 | 460 |
|
Table 4. The infrared spectra of characteristic peaks of NO3- and SO42-in salts were extracted by 055 corresponds to the characteristic peaks of standard salt
物质名称 | 反对称伸缩 | 对称伸缩 | 面内弯曲 | 不对称变角振动 | 对称变角振动 |
---|
标准NaNO3 | 1 388 | 1 071 | 729 | | | 标准Ca(NO3)2·4H2O | 1 419 | 1 059 | 744 | | | 标准无水Na2SO4 | 1 101, 1 132, 1 153 | 994 | | 620, 632, 647 | 449 | 标准硬石膏CaSO4 | 1 112, 1 128, 1 160 | 1 016 | | 608, 627, 675 | 417, 499 | 061-1(N) | 1 384 | 1 066 | 722 | | | 061-2(N) | | 1 049 | 742 | | | 061-2(N) | 1 084 | 1 066 | 723 | | | 061-1(S) | 1 128 | 995 | | 625, 634 | 455 | 061-2(S) | | 1 016 | | 636 | 452 | 061-3(S) | | 1 003 | | 625 | 416, 495 |
|
Table 5. The Raman spectra of characteristic peaks of NO3- and SO42- in salts were extracted by 055 corresponds to the characteristic peaks of standard salt