For the major element analysis, potassium (K), magnesium (Mg), calcium (Ca), phosphorus (P), and sodium (Na) samples were diluted 1 300 prior to analysis.
148 batches of different concentrations diclofenac sodium samples were divided into three groups: 80 training samples, 46 validation samples and 22 test samples.
O-PLS method was applied to remove systematic orthogonal variation from original NIR spectra of diclofenac sodium samples, and the filtered signal was used to establish ANN model.
Table 2 Statistical analysis of sodium samples Sample Mean mmol/l SD Blood gas analyzer 131.2 7.3 Auto-analyzer 136.4 6.5.
To assess the improvement in cation exchange capacity following treatment with sodium, samples of MMT were subjected to an identical procedure and used as controls.
Blood samples were collected into tubes containing ethylenediaminetetraacetic acid (EDTA) (hematology samples), sodium citrate (coagulation samples), or no anticoagulant (serum chemistry samples).
The alkaline decomposition of a synthetic sodium arsenojarosite sample with formula [Na0.87(H3O)0.13]Fe2.50[(SO4)1.95(AsO4 0.05][(OH 4.45(H2O 1.55] was studied in NaOH and Ca(OH 2 media.
Aqueous solutions of dextran (core solution), sodium alginate (sample solution) and CaCl2 (sheath solution) were extruded simultaneously from the inner, intermediate and outer cylinders, respectively.
The organic layer was retained and furtherwashed with deionized water until neutral reaction and dried with sodium sulphate.The sample was reduced nearly to dryness using a vacuum rotary evaporator andre-dissolved in 1 mL acetonitrile-methanol (70 30 v/v).
After 48 h, cells were lysed in 1× sodium disulfide sample buffer (12.5% 50 mM Tris-HCL (pH 6.8), 10% glycerol, 2% sodium disulfide, 5% 2-mercaptoethanol, 0.01% bromophenol blue) and samples electrophoresed through 10% polyacrylamide gels.
Optodes modified with Q+B− show practically the same response to pH at distinctively different concentrations of sodium in samples.
