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11 Nov 2019
4 standards of toluene were analyzed using gas chromatography, the areas measured for each concentration are in the table below. Then the three samples A, B, and C of unknown concentration of toluene were analyzed and measured areas were 80, 120 and 160, respectively. What is the concentration of toluene in those samples? A mixture containing 12.8 mu M analyze (X) and 44.4 mu M of internal standard (IS) gave a chromatographic peak area of 306 for X and 511 for IS. A second solution containing an unknown quantity of X plus 55.5 mu M of IS had peak areas of 251 for X and 563 for IS. Find the concentration of X in the second solution. The following values were found for the palladium standard when an instrumental assay was employed. The instrument reading for a sample with unknown Pd was 56.0 units. Plot calibration curve and find the concentration of the sample.
4 standards of toluene were analyzed using gas chromatography, the areas measured for each concentration are in the table below. Then the three samples A, B, and C of unknown concentration of toluene were analyzed and measured areas were 80, 120 and 160, respectively. What is the concentration of toluene in those samples? A mixture containing 12.8 mu M analyze (X) and 44.4 mu M of internal standard (IS) gave a chromatographic peak area of 306 for X and 511 for IS. A second solution containing an unknown quantity of X plus 55.5 mu M of IS had peak areas of 251 for X and 563 for IS. Find the concentration of X in the second solution. The following values were found for the palladium standard when an instrumental assay was employed. The instrument reading for a sample with unknown Pd was 56.0 units. Plot calibration curve and find the concentration of the sample.
Keith LeannonLv2
11 Nov 2019