Answer Posted / sa
First, take a clean wire loop of Platinum or nickel-
chromium . They may be cleaned by dipping in hydrochloric
or nitric acid, followed by rinsing with distilled or
deionized water.
Test the cleanliness of the loop by inserting it into a
bunsen burner flame. If a burst of color is produced, the
loop was not sufficiently clean.
Ideally, a separate loop is used for each sample to be
tested, but a loop may be carefully cleaned between tests.
The clean loop is dipped in either a powder or solution of
an ionic (metal) salt. The loop with sample is placed in
the clear or blue part of the flame and the resulting color
is observed.Na+ plus gives dazzling golden yellow flame,Ka+
gives crimson red & when look through blue glass gives
purple colour. Ba salt gives apple green colour , Ca++
gives brick red colour,etc
In this way Flame test is done.
| Is This Answer Correct ? | 18 Yes | 3 No |
Post New Answer View All Answers
what is third integration
what is biorelivent dissolution media?
What is similarity factor and its use in api strength?
how you establish the LOQ?
mode of absorption in alimentary canal?
Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?
how to decide for one product require water content or LOD?
How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?
what are risk assement in the analytical qbd?
why xterra column require to use at higher ph?
Why dissolution test is not performed in all of the products
How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.
in which situation require to change rs specification?
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain
how to calibrate hplc & gc
