Table 2.
Measurement Strategies for background distinction (only articles with original measurements)
| With/without activity | With/without nanomaterial | |
|---|---|---|
| Time series analysis | [36-41] | [42]2,3 |
| Time series and, or only spatial analysis | [2]2, [3]2, [33]2,3, [36]1, [38]1, [43-52]2, [53]2,3, [54]2,3, [55]2,3 | |
1: Only in some cases
2: Additional background distinction by chemical analysis (filtration sample or single particle analysis)
3: Additional TEM or SEM analysis
4: Nearly clean room conditions: [4], not in table