Sentence examples for by standard additions using from inspiring English sources
The levels of OrA in cows' milk samples evaluated by standard additions, using 5-aminoorotic acid as an internal standard, ranged from 56 to 126 mg/L.
This procedure adds simulated measurement error to model predictions and then subtracts the total measurement error, analogous to the method of standard additions used by analytical chemists.
The concentrations of Zn II) in each capsule and after extraction by SF were determined using SWAdSV by standard additions method as described above.
The concentrations of Cd II) were determined using SWAdSV technique by standard additions method.
The relative standard deviation obtained by standard additions method is ±5% for Cd and Pb, and ±3% for copper.
The accuracy of method was verified using a real sample (spiked tap water) by standard addition calibration technique.
The accuracy of method was verified using certified reference materials (PLANTS 3 and IAEA/W-4) by standard addition calibration technique.
The developed method was also successfully used for determination of the PAHs in genuine lake and river environmental water samples by standard addition method.
Consequently, critical evaluation of the matrix effect was required; if unacceptable suppression occurred there was no alternative to quantification by use of the appropriate matrix-matched calibration standard or, when not available, by standard addition.
The real samples were spiked with standard solution of each analyte, and then were analyzed by standard addition method.
PEP quantification in yeast extracts was conducted by standard addition.
