Beer Lambert Law Spectrophotometer
DESPERATELY NEED HELP?
It is only the points 3 and 4 that the response to the need to thank Determination of protein concentration direct absorption? The Beer Lambert law refers to the absorbance, A, of a substance to a maximum concentration, C, as follows: A = εcL where L is the length of the road in this experiment will determine the value of ε of lysozyme, by measuring the maximum absorbance at 280 nm of a solution of lysozyme concentration unknown using the formula above. Assume that the path length L has a value of 1 cm (i) The spectrophotometer was calibrated to zero and the distilled water in the cell quartz at a wavelength of 280nm (ii) An aqueous solution of unknown concentration was measured lysozyme value of the maximum at 280 nm of 0.65 (iii) Calculation initial molarity of the solution of lysozyme (iv) Convert the concentration of lysozyme solution to mg dm -3 mol dm-3 useful information: Ε280 of lysozyme is 3.65 x 104 dm3mol-1 cm-1 relative molecular mass (RMM) of lysozyme = 14 310 Daltons
III) Molarity = c to solve for it. c = A / eL = 0.65 / (3.65×10 ^ 4 dm ^ 3/molxcm) x1cm iv) Take the answer above is multiplied by 14 310 dalton / mol, and multiplying by 1.66 × 10 ^ -24 g / daltons, and then multiply by 1000000ug / g. I have no calculator at hand, so calculate yourself.
67 UV/Visible Spectrophotometer Demo