Discussion
Why is a graphite furnace more sensitive than a flame?
Answer: C
In a flame most of the aspirated sample is lost to waste and the rest passes through the beam in an instant, whereas a furnace holds the entire few microlitres in the light path for around a second. Temperature is comparable, the lamp is the same, and only absorption is measured. Increasing the time an analyte spends in the measurement, rather than the amount of it, is what buys two or three orders of magnitude in detection limit. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.
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