Discussion
Why is standard additions used in atomic absorption?
Answer: A
Adding known amounts of analyte to portions of the sample means the standards experience exactly the same viscosity, ionisation and chemical environment as the sample does, so a matrix effect applies equally to both and cancels. It takes longer, still needs a blank, and does not extend linearity. Calibrating inside the thing being measured is the general answer wherever the surroundings affect the measurement. Working one numerical case through both cases side by side fixes the distinction better than any rule of thumb.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development