61. Option 2 A sample of animal tissue weighing m g was

  • USD
    • RUB
    • USD
    • EUR
Affiliates: 0,01 $how to earn
i agree with "Terms for Customers"
Sold: 0
Uploaded: 05.08.2019
Content: 61-2.rar 99,79 kB

Product description

61. Option 2
A sample of animal tissue weighing m g was burnt in a muffle furnace, the residue was dissolved in HCl and diluted with a solution of lanthanum salt to 5.00 ml to eliminate the interfering influence of phosphate ions.
Equal volumes of standard calcium solutions containing С0 = 0 were added to four equal portions of the analyzed solution; C1 = 2.0; C2 = 4.0; C3 = 8.0 µg / ml Ca and the same amount of lanthanum salt as in the analyzed solution. The atomic absorption spectrophotometer measured the optical density of the analytical line of calcium (422.67 nm)
Calculate the concentration of calcium (mg / kg) in the following samples, using the construction of the calibration curve using the method of additives:
Option 2
m = 0.20 g
Atomic absorption
Ax / 2 = 0.075
A (x + C1) / 2 = 0.150
A (x + C2) / 2 = 0.226
A (x + C3) / 2 = 0.380

Additional information

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.


No feedback yet.
In order to counter copyright infringement and property rights, we ask you to immediately inform us at support@plati.market the fact of such violations and to provide us with reliable information confirming your copyrights or rights of ownership. Email must contain your contact information (name, phone number, etc.)

This website uses cookies to provide a more effective user experience. See our Cookie policy for details.