## 3 Results and Discussion
### Analysis of Water Retention of Non-Ionic Fluorinated Dust Suppressants
#### 3.2.2 Analysis of Segmental Weight Loss Rate Variation of Non-Ionic Fluorinated Solutions
The lower average water loss rates for these concentrations further support their superior water retention capabilities. Analyzing water loss during each time period indicates that the time period with the least water loss in the solution is 24-48 h. This time period suggests that specific molecular functional groups in the FS-34 solution may contribute to better water retention during this interval, and may have properties that reduce evaporation or enhance water-binding interactions. Moreover, the concentration of the FS-34 solution with the best water retention is 0.03%, and the water retention time can be controlled within 48 h to ensure better water retention performance. The concentrations linked to the least water loss in each time period (0-12 h, 12-24 h, 24-36 h, 36-48 h, and 48-60 h) imply that different molecular functional groups may play roles in water retention at different stages, likely due to unique properties or interactions with water molecules that influence evaporation rates during specific time intervals. The minimum water loss concentration at 60 h is 0.2%. The water loss of the FS-50 dust suppression solution is observed at various concentrations and time intervals. An increase in concentration does not significantly alter the overall water loss at 60 h. The maximum water loss is observed at a concentration of 0.06%, with a total water loss of approximately 16.4639 g. Conversely, the minimum water loss is observed at a concentration of 0.3%, with a total water loss of around 12.3719 g. These findings suggest that different molecular functional groups present in the FS-50 solution at varying concentrations may affect water retention properties. Specifically, the functional groups at higher concentrations may contribute to increased water loss, while those at lower concentrations may enhance water retention. Notably, most concentrations of solutions (excluding 0.05%) have the highest water loss during the 24-36 h time period. The concentration of the solution with the highest water loss varies at different time periods: 0.04% from 0 to 12 h, 0.01% from 12 to 24 h, 0.04% from 24 to 36 h, 0.06% from 36 to 48 h, and 0.02% from 48 to 60 h. Thus, different molecular functional groups may influence water retention during different stages and may have properties that promote or inhibit evaporation rates during specific time intervals. Based on a comprehensive analysis, the concentration of FS-50 solution with the best water retention is determined to be 0.3%. 3.2.3. Analysis of the Variation in Total Weight Loss Rate of Non-Ionic Fluorinated Solutions  
In the water retention experiments of FS-30 solution, the total mass lost by the solution fluctuates as the solution concentration increases, reaching a minimum at concentrations of 0.01%, 0.03%, 0.05%, and 0.2%. The least total mass lost is 10.407 g at a concentration of 0.05%, followed by a total mass loss of 10.4036 g at a concentration of 0.2%. The most total mass lost is 13.4653 g at a solution concentration of 0.08%. At this concentration, the hydrophobic functional groups are moderately concentrated, but not as densely packed as at 0.05% and 0.2%. As a result, the interaction between the solution molecules and water molecules is weaker compared to 0.05% and 0.2%. This weaker interaction allows for a relatively higher loss of water from the solution, resulting in the highest total mass lost among the concentrations tested. The table shows that the best water retention is achieved at solution concentrations of 0.05% and 0.2%, where the least mass is lost, while the worst water retention is achieved at a concentration of 0.08%, where the most mass is lost. As can be seen in Figure 7, the total mass lost from the solution in the water retention experiment fluctuates up and down in the form of increasing solution concentration, reaching a trough at solution concentrations of 0.03%, 0.08% and 0.1%.