In this case, the composition of the injected water (column inlet) was specified using the actual measured pH and species concentrations in the influent reservoir, but correcting the total dissolved carbonate concentration to yield ion charge balance (Table 1).
Gas chromatography/mass spectrometry (determinations performed at the Institute of Toxicology, Ministry of Health, Tenerife) was also used to determine the actual concentrations of THC in the final solution inoculated to the patients.
The actual concentrations used for each component are detailed in Table 1.
A LC MS/MS [4000QTrap (Applied Biosystems, Gent, Belgium) operated with electrospray ionization in the positive ion mode (ESI)] was used for the determination of the actual concentrations of the pesticide.
A standard curve using mouse myeloma protein of the IgG1 (LO-IMEX) isotype was used to obtain the actual concentration.
Other guidelines explicitly indicate what concentrations to avoid, but do not recommend the actual concentrations to use [ 11– 13].
Wherever possible, data to assess relative potencies were used only from studies in which the actual concentrations of estrogen dosed had been analytically verified.
In this paper fifteen theoretical probability distribution functions, were used to fit the actual concentration frequency distributions of CO, NO2, O3, SO2, and Black Smoke (BS) in Athens, Greece for a 23-year period.
(1) RF = Are a compound / weight of the compound injected Are a IS / weight of IS injected The response factor was then used to calculate the actual concentration of the compounds in the sample.
While our calculated IC50 values for CAS after 24 hours are a few fold higher than other cell-based assays (e.g., luciferase) performed at 48 72 hrs, these population-based readouts will also be highly dependent on the actual concentrations of R1881 used for the competition [28].
