When the result was below the minimum detection limit for the assay, the minimal detectable concentration was used for the analyses.
Simulation results show that the minimal detectable concentration of biological aerosols increases with detection range at different rates for different solar zenith angles, and that the uncertainties of the minimal detectable concentrations increase sharply with ranges.
The concentrations of IL-1β, IL-2, IL-4, IL-5, IL-10, IL-17, IFN-γ, TNF-α, eotaxin, MIP-1α, RANTES, EGF and bFGF were under the detection level in all the examined samples (the minimal detectable concentration is listed in Table 2 4).
The minimal detectable concentration based on the lowest discernable concentration from zero is 10 ng/mL.
And the minimal detectable concentration was down to 5.0 × 10−8 M on the electrode with 13 bilayers buildup.
In the day-time, aerosols emitting intrinsic fluorescence wavelengths are expected to be detectable at larger distances, with a relatively large uncertainty of the minimal detectable concentration.
The minimal detectable concentrations for ET-1 and hsCRP were 0.41 pg/ml and 0.02 μg/ml.
The minimal detectable concentrations are 3 pg ml-1 for TNF-α, 2 pg ml-1 for IL-6, and 1 pg ml-1 for IL-10.
The standard curve ranges for nitrite and nitrate were respectively 0 200 and 0 100 nmol/ml and the minimal detectable concentrations were respectively 0.22 and 0.54 nmol/ml.
The minimum detectable concentration by visual detection was ~500 nmol.
The minimum detectable concentration was 0.1 μg/ml.
