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- W2385571724 abstract "Sulfate ion in the sample solution was precipitated as BaSO_4 by a definite amount of barium chromate suspension. After boiling and adjusting the acidity with ammonia water (1+2), the solution mixture is centrifuged for 1min at the rate of 1500 revolutions per minute. The absorbance of CrO~(2-)_4 in the supernatant layer was taken at 420nm with 1cm absorption cell. Beer′s law holds in the range of 0～6mg of SO~(2-)_4 ion per 50ml of solution. The detection limit of the method is found to be 0.48μg·ml~(-1). RSD′s ( n =8) obtained is 5.38% for 0.50mg of SO~(2-)_4 and 1.03% for 2.00mg of sulfate ion. Average recovery is 99.5%. This method has been applied to the analysis of raining water, ground water and waste water." @default.
- W2385571724 created "2016-06-24" @default.
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- W2385571724 date "2003-01-01" @default.
- W2385571724 modified "2023-09-23" @default.
- W2385571724 title "INDIRECT PHOTOMETRIC DETERMINATION OF SULFATE IN WATER AND WASTE WATER" @default.
- W2385571724 hasPublicationYear "2003" @default.
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