Dejan Urbancok

7 Questions 9 Answers 0 Followers

Questions related from Dejan Urbancok

Dioxins (PCCD/F) analysis in the air, on LC-MSMS?

Any experience and references on this subject would be great! Especially clean up procedure! Thank you!

03 May 2016 5,215 6 View

What is a solvent of choice for analysis of PCBs by GC-MS?

I wonder which solvent is the best to use for making standards, and in the sample prep. procedure for Analyzing PCBs in the AIR by GC-MS? Available stock standard solutions are in Hexane and...

20 July 2015 7,797 17 View

Could anyone tell me the equation for calculating PAHs in the air by using linear external calibration with results in ng/m3?

Could anyone tell me the equation for calculating PAHs in the air by using linear external calibration with results in ng/m3? Thank you!

24 June 2015 7,250 5 View

How do I desiccate filters when PM10 Sampling of PAHs?

Please could anyone share their experience how you desiccate filters after sampling. Do you apply vacuum, i am worried will I have some losses from the filters due to vacuum. Thank you!

29 May 2015 8,413 2 View

Anyone familiar with PAHs extraction from PM10 filters?

What I do is I cut filter in small pieces, add 10 ml of DCM sonicate and shake. What I wonder is I cannot squeeze more than 6 ml of extract from the filter which is 60% of the initial 10 ml. After...

16 April 2015 6,280 11 View

How do I develop an internal standard for PAHs analysis using SIM GC-MS?

I have problems to separate internal standards from my 16 target PAHs . I am using mixture of 5 IntStd according to EPA methods TO-13A. 1.Do I have to use all 5 internal standards to calculate...

23 March 2015 1,701 4 View

Could anyone tell me how many replicates of one set point is needed to be run for constructing the calibration curve using GC-MS ?

I am getting various answers is there some general standard for GC-MS

09 March 2015 9,270 17 View