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1. The effects of the initial concentration of ammonium sulfite, the reaction temperature, the air flow rate, the concentration of catalyst of cobalt sulfate are investigated.

2. Sodium sulfite ( Na 2 SO 3 ) is a reducing agent used to pulp paper and in photography.

3. The inhibition of pyrocatechol on sulfite oxidation was investigated by oxygen removal and air oxidation tests.

4. And the results were anhydrous sodium sulfite 0.2%, sodium lauryl sulfate 7%, fatty alcohol polyoxyethylene lauryl ether sulfate sodium 12% and dodecyl betaine 4%.

5. To study the determination of sulfite in food by pararosaniline hydrochloric spectrophotometry, then according to the sample characteristic, the treatment select soak, ultrasonic and distill.

6. The action of sodium sulfite is similar to that of cysteine.

7. We investigate the bleaching of neutral sulfite reed pulp by peroxy acetic acid ( PAC ).

8. Ammonia sulfite pulping of corn stalk was studied in this paper.

9. Pollution loadings and physicochemical characteristics of low - sulfite SCMP effluent were determined.

10. The effect of the sodium sulfite concentration on cobalt removal was investigated.

11. Softwood sulfite pulp is light colored and contains a comparatively small amount of lignin.

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12. A result shows that alkaline sodium sulfite with anthraquinome process is adaptable for linum usitatissmum minn to produce kraft paperboard pulp.

13. By selecting sodium sulfite as dechlorinating agent, photobacteria method was used to investigate the effect of dechlorination on reduction of biotoxication incurred by residual chlorine.

14. Using waste liquor of sulfite process as main material and complexing different kind of metal positive ions , the corresponding lignosulfonate(LSS)are prepared.

15. The preparation methods of hexadecylguanidium sulfite from hexadecylamine and aminoiminomethanesulfonic acid was studied.

16. The eluant of gold is 1 % sodium sulfite solution or 2 % thiourea solution.

17. An optimum technology of extra, ting gold from halogenide medium with emulsion liquid membrane of trioctvle amine-kerosine-sodium sulfite was studied.

18. The results indicated that bagasse pulps with high yield, good strength and bleachability can be produced by neutral or alkaline potassium sulfite pulping.

19. Fluorocarbon alkyl sulfosuccinate monoester surfactants was synthesized on the basis of carochefluorohepnonyl, maleic anhydride and anhydrous sodium sulfite as starting materials.

20. The modification has been made on the black wattle tannin adhesive with sodium sulfite and the MUF concentrate so as to prepare out a tannin adhesive with good water-proof and better glue properties.

21. Because of their larger size and structure, gypsum crystals settle and dewater better than calcium sulfite crystals, reducing the required size of by-product handling equipment.

22. It is noted that the preparation and utilization condition for fuchsin-sodium sulfite can influence the stability of the reagent and the sensitivity of rapid detection for formaldehyde.

23. Therefore, it is feasible to substitute conventional alkaline deinking by near-neutral sulfite deinking in paper plant.

24. The influence of the compound fertilizer which is made of the ammonification of ammonia sulfite pulp black liquid on the soil urease activity.

25. The sulfur emissibility during burning cement clinker with calcium sulfate, calcium sulfite gypsum and desulphurize slag that consist of CaSO3 separately were studied in laboratory electric stove.

26. The test results provided important evidences for the free radical chain mechanism of sulfite oxidation and an effective method for preventing sulfite failure in storage.

27. The test results provided important evidences for the free radical chain mechanism of sulfite oxidation and an effective method to prevent sulfite from failure in storage.

28. The test results provide an important evidence for the free radical chain mechanism of sulfite oxidation and also an effective method for preventing sulfite failure during its storage.

29. This paper illustrates the reaction of larch bark tannin extracts with sulfite and sodium hydroxide and the tests of its solution viscosity, MW-distribution and thin-layer chromatography.

30. The pollution of sulfur dioxide is eliminated completely and the sulfur resource is utilized effectively by the way of producing sulfur, liquid sulfur dioxide, sodium sulfite and sodium pyrosulfate.