The Study About Degradation And Adsorption Of Naphthalenesulfenesulfonate In Entironment By Solid Phase Extraction-Ion Suppression Chromatography

In the recent years, considerable attention has been paid to the human exposure to Naphthalenesulfenesulfonate Compounds, one of environmental contamination. So studying high detection is very important to solve their remanet in water and soil. This paper studysα-sodium naphthalene sulfonate andβ-sodium naphthalene sulfonate. The Solid Phase Extraction (SPE) -- Ion Suppression Chromatography (ISC) is a new sample detection technique. Using this technique detects their persistence in the water and the soil was the mostly intent.The main conclusions were as follows:1. The best Ion-Suppression Chromatographic conditions in detectingα-sodium naphthalene sulfonate andβ- sodium naphthalene sulfonate were UV detection wavelength of 275nm, mobile phase of water(pH=4)-methanol at 90:10(v/v), mobile phase flow rate of 0.7mL/min, column temperature of 40 oC, the column used was ODS, were used to determine the isomeric naphthalenesulfenesulfonate in the environment.2. 3M Empore 6mL C18 was selected as the best solid phase for extracting trace naphthalenesulfenesulfonate compounds in water samples. In addition, most of the influencing factors were studied and optimized. Tetrabutyl ammonium bromide (TBA·Br) as ion-pair reagent should be acceded to the solution at 0.002 mol/L. The result showed that Tetrahydropyrane was the preferred elution solvents for the absorbed naphthalene- sulfenesulfonate compounds. The recoveries ofα-sodium naphthalene sulfonate andβ- sodium naphthalene sulfonate are 85%-92% when 3.0mL elution solvent was selected, the flow rate of sample loading was 5mL/min, the acid of samples at the range of 5~6 and the concentration of potassium chloride in the water was 5 g/L. the variation of recoveries as a function of the volume of elution solvent used can be determined. If additting 0.7% methanol into the sample, it could greatly improve the recoveries.3. The degradation of the isomericα-sodium naphthalene sulfonate andβ- sodium naphthalene sulfonate was investigated in the water. The results showed that hydrolysis of the isomericα-sodium naphthalene sulfonate andβ- sodium naphthalene sulfonate compounds depended on both the temperature and the pH. The rate of photo degradation was slower in the river's water than pure water under sunlight, this show the degradation was restrained by the else substance in river. When acetone was added, the rate was even more fast. However, the rate of photo degradation was much faster than those, when it was under UV lamp, the degradation's rate is about one hour.4. Research on the adsorption ofα-sodium naphthalene sulfonate andβ- sodium naphthalene sulfonate in four different types of soil in Changchun region showed that the content of organic carbon was the major factor of adsorption in the soil. From the organic carbon adsorption constant, middling transference,α-sodium naphthalene sulfonate andβ- sodium naphthalene sulfonate had high transference, and these showed that they had batter...