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Subsequently, the SAs trapped on the alumina were eluted with 0.3% acetic acid aqueous solution and determined by liquid chromatography tandem mass spectrometry.
Adsorbed Pb2+ was eluted with HCl, followed by complexion with dithizone in ethanol water solution and determined by UV visible spectrophotometry in a continuous flow system (FI).
The ammonia was extracted with a 2 N potassium chloride (KCl) solution, and determined by spectrophotometric nesslerization at 445 nm; the corresponding calibration curve was created using an ammonium chloride (NH4SO4) solution [56].
We also used principal components analysis (PCA) of the final clustering solution, and determined the bimodality index for the first principal component.
We added sulfuric acid as a stop solution and determined the amount of NGF by optical density using a microplate reader set at 450 nm (VMax microplate reader; Molecular Devices, Sunnyvale, CA, USA).
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We also study the properties of the equilibrium solution and determine conditions under which it is unique, symmetric, and Pareto-optimal.
The second method uses the derivatives of the approximate solution and determines the element lengths by equidistributing the estimated error in an iterative procedure.
The method consists essentially of transforming all nitrogen in a weighed sample into ammonium sulfate by digestion with sulfuric acid, alkalizing the solution, and determining the resulting ammonia by distilling it into a measured volume of standard acid, the excess of which is determined by titration.
The corrosion resistance of a plasma-oxidized Ti 6Al 4V alloy sample was evaluated by immersing the sample in a lactic acid solution and determining the amounts of eluted elements in the immersion-test solution.
The employed bee goes to a solution and determines a neighbor source, as shown in Eq. (2), then evaluates its quality of solution.
By combining SLS with DLS one can investigate the dynamics of growth of aggregates in solution, and determine the relation between the mass and size of a cluster.
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