current

I'd do this (unless you can give me more specific information on the heterocyclic ring elements):

Numerous contaminants, including water, metals, particles and heterocyclic compounds (containing nitrogen, sulphur and/or oxygen) are removed from the current of hydrocarbons to improve the quality.

Yes, that's fair enough but I'm not happy with 'current'.

I asume it's part of a larger text dealing with a description of the material being fed in to a processing or blending plant of some sort. Can we see the whole paragraph?

Of course, here it is:

Chemical characteristics and petrol content



Benzine is a complex mixture of hydrocarbons, mainly within the range C5-C10(C4-C14) and it includes alkanes (paraffins), alkenes (olefins), naphtens (cycloparaffins) and aromatics. The chart 39.1. shows the volume content of the benzine.

In terms of molecular content, benzine contain

Sorry to be a nuisance but is there are paragraph after this?

Or is there some indication of where this 'current' ( Stream/flow) is going to? Is it part of a description where the benzine is fed into some sort of processing plant?

Or is this 'current' the benzine which has been put into the gas chromatographic analysis in order to find out its composition?

Hello Alan,

There's nothing after that paragraph. This is a whole paragraph withthe title. And I have no idea what the current is.

OK

I'd put 'hydrocarbon stream' instead of current of hydrocarbon.

I still don't understand what the author is trying to say but that terminology will cover both possibilities. I don't think ' current' is suitable.

Thank you Alan.