Difference between uv detector nd RI DETECTOR? wt s the difference between OVI

Difference between uv detector nd RI DETECTOR?
wt s the difference between OVI Solvents nd residual
solvents incase of GAS CHROMATOGRAPHY? nd wt s its
detection limit?

Question Posted / sujana

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Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual..

Answer / kadam

UV detector detects only those analytes which has UV
absorbence. Where as RI detects maximum analyts with diff. RI.

OVI solvent is nothing but organic volatile impurities. And
residual solvents are the solvents resides with analyte
after crystallization/ purification.

Is This Answer Correct ?

11 Yes

6 No

Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual..

Answer / devendra birla syncom formulat

OVI measuring by using water as a diluent for standard and test preparation. OVI is nothing but it is also residual solvent combine with analytes durring its purification. In other word residual solvents may be varry by different manifactrures it depend on their manifacturing process so we can say that the Residual solvents are part of OVI.

Is This Answer Correct ?

2 Yes

3 No

Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual..

Answer / i.kizar ahamed

Organic compounds whichever is having conjugation can be
detected by UV DETECTOR. (ELECTRONIC TRANSISTION SHOULD BE
POSSIBLE)

For inorganic compound RI detector is uesd .

OVI :Organic volatile impurities

Based on the toxicity solvents has classified as
class1,class2,class3.
Class 1 solvents are
Benzene 2 ppm
Carbon tetrachloride 4 ppm
1,2-Dichloroethane 5 ppm
1,1-Dichloroethene 8 ppm
1,1,1-Trichloroethane 1500 ppm

Organic volatile impurities:

Chloroform ,1,4 Dioxane,MDC ,Trichloromethane