The following is HPLC data. Using the standard curve determine the concentration of caffeine in each sample in µg/µl: Sample Peak area Volume of sample Amount of caffeine µg/ µl 1 1305490 1 µl 2 7836463.3 1 µl 3 3476413.7 1 µl 4 2936950.7 1 µl 5 15452894 1 µl 6 958353.7 1 µl 7 592743.3 1 µl 8 557099 1 µl 9 653410.7 1 µl 10 734443.7 1 µl
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The following is HPLC data. Using the standard curve determine the concentration of caffeine in each sample in µg/µl:
|
Sample |
Peak area |
Volume of sample |
Amount of caffeine µg/ µl |
|
1 |
1305490 |
1 µl |
|
|
2 |
7836463.3 |
1 µl |
|
|
3 |
3476413.7 |
1 µl |
|
|
4 |
2936950.7 |
1 µl |
|
|
5 |
15452894 |
1 µl |
|
|
6 |
958353.7 |
1 µl |
|
|
7 |
592743.3 |
1 µl |
|
|
8 |
557099 |
1 µl |
|
|
9 |
653410.7 |
1 µl |
|
|
10 |
734443.7 |
1 µl |
|
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- The standard curve to determine the amount of betacyanin is shown below. You extracted a red pigment from a beet disc (the mass of a disc is 2 g) using 10 ml of 20% ethanol solution. You measured absorbance of the solution above the beet disc every minute for a total time of 20 minutes. The increase in absorbance was linear during a period of time from 1 min to 10 min. The absorbance at 10 min was 0.8. Calculate the amount of betacyanin extracted from 1g of a beet tissue per minute. Explain your calculations. You can use Excel or a calculator.In the experiment performed for the determination of cholesterol, the function of the calibration curve obtained using 25-400mg/dL standard cholesterol solutions was determined as y= 0.0009x. If the absorbance of the serum sample is determined as 0.28, what is the amount of cholesterol in the sample, in mg/L?Solution Absorbance mg/ml aspirin Standard solution - 1.6 mg/mL A 0.638 0.08 mg/mL B 0.504 0.064 mg/mL C 0.376 0.048 mg/mL D 0.259 0.032 mg/mL E 0.126 0.016 mg/mL A = -log T where T = %T ÷ 100 Construct a callibration curve using the above data. Absorbance should be on the vertical axis and "mg/mL of acetylsalicylic acid" on the horizontal axis. The line should go through the origin. Using the data provided, the graph you have generated, and the procedure that was used to generate the solutions which were examined by spectroscopy, calculate the amount of acetylsalicylic acid per tablet. Commercial tablet 1 labelled as 100 mg enteric coated Absorbance = 0.16 Commercial tablet 2 labelled as 300 mg Absorbance = 0.45 Student prepared tablet from practical 5 Absorbance = 0.19 Using the data provided, the graph you have generated, and the procedure that was used…
- From the following data, find the % (w/w) cream of tartar (KHC4H406, MM=188): Wt of sample = 1.4160 g NaOH titrant used = 20.87 mL HCI used for back titration = 1.27 mL 1.00 mL HCI 1.12 mL NaOH 1.00 mL HCI A 0.01930 g CaCO3 89.08% (w/w) 87.12% (w/w) O 47.75% (w/w) O 95.59% (W/w)a) What are the methods used for cholesterol determination? Explain the basis of the method you used in your experiment by writing.b) In the experiment conducted for the determination of cholesterol, the function of the calibration curve obtained using standard cholesterol solutions of 25-400mg/dl was determined as y= 0.0009x.Since the absorbance of the serum sample was determined as 0.28, how many mg/L is the amount of cholesterol in the sampleA cholesterol screening has reported Toms blood serum contains 50mg/dal HDL and 180 mg/dal LDL and a total cholesterol of 255. Are these values in the normal range?
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- The results observed in a patient admitted to an emergency department with confusion and oliguria were reviewed (reference ranges are given in brackets): Sodium Potassium Urea Creatinine Alkaline phosphatase Alanine aminotransferase Albumin Bilirubin Calcium 146 mmol/L 7.2 mmol/L 18.5 mmol/L 256 μmol/L 319 IU/L 32 IU/L 42 g/L 13 μmol/L 2.47 mmol/L (135-145) (3.5-5.0) (3.5-6.6) (70-150) (95-320) (a) What is the electrolyte abnormality in this patient? (b) What do the data suggest? (c) What action should you take? (5-42) (35-50) (<17) (2.12-2.62) The sample was not visibly haemolysed and was centrifuged and analysed in the labora- tory within one hour of being collected.Siturul alORK ING )A mother brings her 251b child Into the ER with q very high fevero she has already ad ministered l2 4sp of Tylenol at home. She has brought the bottle with her and the label states: Acetamaino phere syrmp 325 mg / 5mLo Administer 10-15 mg /89 every 4 hrs as needed . How many milligrams oL Tylenot has she givern? Was this asafe dose to give the child?Your 67 YO 195lb, 5ft 10in male patient diagnosed with testicular cancer has been prescribed ifosfamide 1200mg/M2/day IV for 5 days. You calculate the BSA using the mosteller method as being 2.09m2. Ifosfamide is available in 60mL vials contianing 3g of drug. a) How many mL will you administer each day?