Sentence examples for acidic samples from inspiring English sources

Acidic samples were enriched in acetic acid and formic acid, while neutral/basic samples were enriched in acetate and formate.

Ammonium hydroxide was used to neutralise formic acid (pH adjusted to 5.5) in acidic samples and volatile ammonium formate was removed with water addition using same repeated SpeedVac cycles.

Acidic samples favored the reaction of aromatic ring methylation with methane whereas deep oxidation of CH4 prevailed on NaHZSM-5.

Acidic samples were neutralized by the addition of CaCO3 before analysis.

The concentrated neutral and acidic samples were fractionated using size exclusion chromatography (FPLC Amersham-Biosciences, Akta system 890) with an XK 260 × 1000 mm column (GE Healthcare) packed with P2 gel (200 400 mesh, separation range of 100 1800 MW, Biorad Laboratories, Hercules, CA, USA).

If only chloride is present, the drying procedure could result in a more acidic sample (hydrochloric acid), which – unlike acetic acid – has the potential to liberate sulfide from zinc sulfide.

However, the dissolubility of lignin in the alkaline environment was higher than that in the acidic environment, so the lignin after sulfonate was much easier to dissolve in aqueous alkali, causing lower sulfonic acid group in the alkaline sulfite treated sample (0.039 mmol/g) than in the acidic sample (0.094 mmol/g).

Polysaccharide extractions by 1) acidic sample solution with agitation, 2) flowing acidic sample solution, 3) static magnetic field combined with flowing acidic sample solution, and 4) rotary magnetic field combined with flowing acidic sample solution were conducted at pH level of 2 4, temperature of 30 50 °C, and treatment time of 0 180 min.

The extraction by use of rotary magnetic field combined with flowing acidic sample solution resulted in the highest polysaccharide yield.

During the catalytic tests it was observed that the most acidic sample (SZ8) had the highest catalytic activity for simultaneous esterification and transesterification, resulting in a 59.4% yield of ethyl esters.

Under soft electrokinetic migration conditions, methadone was transported from an acidic sample solution (pH 4.0), through the NPOE immobilized in the pores of the porous polypropylene sheet membrane, and into 25 µL of 10 mmol L−1 HCl acceptor solution with a stirring rate of 1000 rpm and 700 rpm after 15 min and 20 min for LV-ESSM-LLME and LV-EME, respectively.