River water, peroxide determination

Risk labels, lATA/ICAO, 751-3 Risk phrases, 621, 748, 749 River water, peroxide determination, 642 RNA, ozone disinfection, 616 ROS see Reactive oxygen species Rose Bengal sensitized photooxidation, 890 Rotational barriers, regioselective allylic hydroperoxide formation, 836, 847-9 Rotational isomers, peroxynitrous add, 8-9 Rotational spectra, ozonides, 721, 722-3 RP-HPLC, hydrogen peroxide determination, 627... 

Sodium perborate, hydrogen peroxide determination, 652 Soil, analysis of peroxides, 608 Solar radiation, peroxides in river water,... 

Yamane et al.[13] determined cobalt in sea water and river waters with a catalytic spectrophotomeiric method after on-line preconcentration using a column packed with quinolin-8-ol immobilized on silica gel. The tartrate eluate from the preconcentraiion had to pass through a second column packed with a strongly acidic cation exchanger to remove iron(III) and manganese(II) which interfere in the catalytic reaction of oxidation of protocatechuic acid by hydrogen peroxide. An extremely low detection limit of 0.005 /ig 1 was obtained. However, the sampling frequency was less than 2 h . ... 

Zolotov et al. [18] developed a suppressed IC method for the simultaneous determination of Se03 and Se04 in the presence of F , CT, N03, H P04 and S04 ". The separation took about 30 min. The method was applied to river and tap water. Sensitivity and precision were good. Hydrogen peroxide was used in the sample pretreatment to decompose organoselenium compounds so that total selenium could be determined. 

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