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Sulfite (SO3(2-)) and thiosulfate (S2O3(2-)) are the best species for sulfur analysis because they are the main intermediates during sulfur analysis. In previously research, Differential Pulse Polarography (DPP) method have been developed for SO3(2-) and S2O3(2-) analysis. To find alternative electr...
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id-itb.:90922017-09-27T11:42:33Z#TITLE_ALTERNATIVE# MARINI (NIM 10503019), RINI Indonesia Final Project INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/9092 Sulfite (SO3(2-)) and thiosulfate (S2O3(2-)) are the best species for sulfur analysis because they are the main intermediates during sulfur analysis. In previously research, Differential Pulse Polarography (DPP) method have been developed for SO3(2-) and S2O3(2-) analysis. To find alternative electrode for SO3(2-) and S2O3(2-) analysis, mercury film electrodes on copper wire is used in this study. Squarewave voltammetry technique is used in this research. It has been found that S2O3(2-) can not be detected in all conditions studied, therefore optimization was only conducted for SO3(2-). The optimum wire diameter is 2,5 mm. Relative standard deviation for repeated measurement of 10 ppm SO3(2-) solution in acetate buffer solution pH 4,51 is 8,91% (n=20). The calibration plot for SO3(2-) solution was linear over concentration range of 10-160 ppm with detection limit of 3,71 ppm. The percent recovery for SO3(2-) is between 93,76-106,18%, showing good accuracy. text |
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Sulfite (SO3(2-)) and thiosulfate (S2O3(2-)) are the best species for sulfur analysis because they are the main intermediates during sulfur analysis. In previously research, Differential Pulse Polarography (DPP) method have been developed for SO3(2-) and S2O3(2-) analysis. To find alternative electrode for SO3(2-) and S2O3(2-) analysis, mercury film electrodes on copper wire is used in this study. Squarewave voltammetry technique is used in this research. It has been found that S2O3(2-) can not be detected in all conditions studied, therefore optimization was only conducted for SO3(2-). The optimum wire diameter is 2,5 mm. Relative standard deviation for repeated measurement of 10 ppm SO3(2-) solution in acetate buffer solution pH 4,51 is 8,91% (n=20). The calibration plot for SO3(2-) solution was linear over concentration range of 10-160 ppm with detection limit of 3,71 ppm. The percent recovery for SO3(2-) is between 93,76-106,18%, showing good accuracy. |
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Final Project |
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MARINI (NIM 10503019), RINI |
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MARINI (NIM 10503019), RINI #TITLE_ALTERNATIVE# |
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MARINI (NIM 10503019), RINI |
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MARINI (NIM 10503019), RINI |
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https://digilib.itb.ac.id/gdl/view/9092 |
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