perchloric acid

Kunkul, "Dissolution kinetics of ulexite in perchloric acid solutions," International Journal of Mineral Processing, vol.

Methanol, perchloric acid and acetonitrile were all attempted and methanol and perchloric acid were finally adopted because of their high extraction efficiency and less interference.

Besides reporting a value immediately, another advantage of using handheld lactate meters over precipitation by perchloric acid is that the instruments only require a small drop of hemolymph sample to determine L-lactate levels.

An excellent peak-response and reproducibility of the signals in solutions of perchloric acid enabled us to select it as a best supporting electrolyte for the sensors working in current experiment.

Samples were prepared as follows: 100 [micro]L of plasma or weighted tissue specimen was pretreated with the mixture of nitric acid and perchloric acid (20: 1, v/v) overnight and heated at the temperature of 180-200[degrees]C until samples were completely digested, that is, until the solutions were colorless and clear.

METHODS: Serum samples were deproteinized by 5% perchloric acid and separated on an Atlantis C18 column (4.6 x 150 mm, 5 [micro]m) with the mobile phase consisting of 0.1 mol/l KH(2)PO(4) and methanol (85:15, V/V).The eluates were monitored by the fluorescence detection with programmed wavelength.

Stock of 1,4-DHP standard solutions was prepared fresh daily by dissolving 50 mg of each of the min 2.0 mL of perchloric acid (70%, 11.6 M) using 100 mL calibrated flask; the contents of the flask were swirled then completed to the volume with diluted aqueous 1.0 M perchloric acid.

Samples of fresh leaves (0.5 g) were homogenized in 1 mL of 5% (v/v) perchloric acid (PCA) and incubated at 4 [degrees]C for 1 h.

This was achieved by digesting the samples using 5 mL (2:1)of 69.40% w/w nitric acid and 90.00% w/w perchloric acid (Oderinde et al., 2008).

Metal perchlorates were prepared from the metal oxides, hydroxides or carbonates by adding required amount of perchloric acid and then crystallizing it.

The precipitate was suspended in 1.5 ml 0.5 N perchloric acid (PCA) and heated to 70C[degrees] for 20 minutes to hydrolyze DNA.