I am using 808 Metrohm to determine H2S in crude oil by
adding 80 ml of( 1:4 toluene and...

Question

I am using 808 Metrohm to determine H2S in crude oil by
adding 80 ml of( 1:4 toluene and isopropanol) with 20mlbuffer 7 to 25mlcrude oil sample a head of titrate it with
CdCl2 .when I switch the ratio of solvent to
1 isopropanol to 4 toluene I got heterogeneous solution (20ml) moreover
I got high H2S result .

Would you please explaining that in details.

David · Accepted Answer

I am using 808 Metrohm to determine H2S in crude oil by adding 80 ml of( 1:4 toluene and 
isopropanol) with 20ml buffer 7 to 25ml crude oil sample a head of titrate it with CdCl2 
.when I switch the ratio of solvent to 1 isopropanol to 4 toluene I got heterogeneous solution 
(20ml) moreover I got high H2S result . 
Would you please explaining that in details. 
Answer 
You added 1:4 tolune and isopropanol as a buffer system. A buffer is used to neuterlise the 
change in pH production as a result of titration.

I am using 808 Metrohm to determine H2S in crude oil by adding 80 ml of( 1:4 toluene and isopropanol) with 20mlbuffer 7 to 25mlcrude oil sample a head of titrate it with CdCl2 .when I switch the ratio...

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