At last, the cement paste was added into the original marine clay to produce a uniform mixture (see Figure 1a). Figure 1. Sample preparation. (a) Mixture of marine clay and OPC cement. (b) The sample for strength test. (c) The samples for SEM observation. Then the samples of the ...
The toxins were separated using a Luna C18 150 × 2 mm, 5 µm column, maintained at 30 °C. Mobile phases were the same as before for the DA analysis [45]. The LC operation mode was isocratic with 70% A and 30% B at 0.18 mL min−1. Total run time was 50 min. Multiple ...