you are given a sample of water that contains calcium and asked to quantitatively determine the amount of analyte in the sample. For this question, describe how would prepare this sample to analyze it using any two applicable instruments methods. how do you need to prepare the sample? what two methods you employ? what parameters will be required to use these methods? ( standards, solvents, equipment, etc) How will the results be determined and what detection limits can you expect with your two methods? please need help Solution 1. Ca^+2 can be determined by titrating the solution against the EDTA solution of known concentration and using EBT (Erichrome black tea) as indicator.The end point of the titration is color change from wine red to blue and thus concentration of Ca^+2 can be calculated by complexometric titration . 2.Ca^+2 concentration can also be find out by using spectrophotometer and preparing known standards of Ca+2 solutions . .

1. you are given a sample of water that contains calcium and asked to quantitatively determine the
amount of analyte in the sample. For this question, describe how would prepare this sample to
analyze it using any two applicable instruments methods.
how do you need to prepare the sample?
what two methods you employ?
what parameters will be required to use these methods? ( standards, solvents, equipment, etc)
How will the results be determined and what detection limits can you expect with your two
methods?
please need help
Solution
1. Ca^+2 can be determined by titrating the solution against the EDTA solution of known
concentration and using EBT (Erichrome black tea) as indicator.The end point of the titration is
color change from wine red to blue and thus concentration of Ca^+2 can be calculated by
complexometric titration .
2.Ca^+2 concentration can also be find out by using spectrophotometer and preparing known
standards of Ca+2 solutions .