Bromine content of brominated butyl rubber(BBR)was determined by 1H-nuclearmagnetic resonance(1H-NMR),wavelength-dispersive X-ray fluorescence spectrometry(XRF)and chemical titration respectively.

The method, using combination of gas chromatography (GC) and chemical titration, could determine respectively contents of alcohol and magnesium ion in the HDC catalyst carrier, and then ratio of alcohol and magnesium in the carrier could be obtained.

The average substitution degree of hydroxypropyl β cyclodextrin could be determined based on a chemistry titration method which could be done in an ordinary laboratory.

The results show that the relatively strong cloud development (with the high updraft velocity)can strength the difference of cloud droplet chemistry resulting from the nucleation of aerosols and the condensational growth of cloud droplets.

Objective To solve the problem of additional airway resistance from oxygen supply tube and humidity liquid dropping tube in trachea pipe for patients with trachea dissection and intubatton along with the fixation of respiration detector.

The experiments were carried out on a combustion research facility (CRF) and chemical titration was used to measure the NH3 slip of extracted gas that goes out from the rear flue.

The content of hydrogen chloride gas out of secondary converter was determined by chemical titration and gas chromatography.

1-2000, we determinate sodium hydroxide and sodium carbonate of industrial sodium hydroxide with traditional chemical titration.