תוצאות חיפוש - WENG Di
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Effects of organic acids on adsorption characteristics of Cadmium on soil minerals
יצא לאור 2003-03-01קבל טקסט מלאEffects of organic acids on adsorption characteristics of Cadmium on soil minerals were studied, the results showed: Effects of organic acids on the adsorption of cadmium on the minerals were almost similar, i. e. amount of adsorbed cadmium increased with increasing the concentration of low molecula...
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FAAS determination of Cu, Fe, Zn, Pb, Cd in tea-leaves using suspension sampling with ultrasonic agitation
יצא לאור 2003-09-01קבל טקסט מלאTo determine the copper, iron, zinc, lead and cadmium content of tea-leaves, leaf samples were powdered and sieved after being hot-dried at (80±2)℃ for 4 hours. Then,5 mL 0.15% agar solution was added and mixed thoroughly with the samples by ultrasonic agitation. and the prepared suspension of sampl...
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Effects of organic acids on adsorption isotherms of cadmium in red soils
יצא לאור 2003-09-01קבל טקסט מלאEffects of organic acids on adsorption isotherms of cadmium in soils were studied leading to the following results. The adsorption isotherms of cadmium in soils containing organic acids could be fitted into the Langmuir equation with correlation coefficients always above 0.98. The strengths of influ...
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Experimental study on method for rapid determination of COD in wastewater effluents by mercury-free open-tube
יצא לאור 2003-03-01קבל טקסט מלאA mercury-free and open-tube method was given for determining COD rapidly, which was reliable, simple and safe. The method employs K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> as oxidant in a medium of H<sub>2</sub>SO<sub>4</sub>-H<sub>3&...
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