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Topic: determination of Cl-, NO3- and SO42- in water (IC)  (Read 793 times)

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Offline xshadow

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determination of Cl-, NO3- and SO42- in water (IC)
« on: May 30, 2021, 04:34:51 AM »
HI
I wonder if there are other analytical techniques used for determination of salts in water other than ionic chromatography (IC) ...

Thanks

Offline Borek

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Re: determination of Cl-, NO3- and SO42- in water (IC)
« Reply #1 on: May 30, 2021, 05:10:33 AM »
A lot depends on the concentration, but nothing stops you from you using classical methods, like gravimetry and titration.
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Offline xshadow

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Re: determination of Cl-, NO3- and SO42- in water (IC)
« Reply #2 on: May 31, 2021, 06:05:23 AM »
A lot depends on the concentration, but nothing stops you from you using classical methods, like gravimetry and titration.

Using tritation are Cl- NO3-  titrated  separately ??
thanks :)

( anyway concentration around 3/3.5 mg/l )

Offline Orcio_Dojek

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Re: determination of Cl-, NO3- and SO42- in water (IC)
« Reply #3 on: May 31, 2021, 09:09:26 AM »
@xshadow

- Cl- - titration with AgNO3 (with K2CrO4 as indicator)
- SO42- - precipitation to BaSO4 (gravimetry)
- NO3- - formation of nitrosalicylic acid which give intense yellow colour (spectrophotometry)
« Last Edit: May 31, 2021, 09:49:36 AM by Orcio_Dojek »

Offline Borek

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Re: determination of Cl-, NO3- and SO42- in water (IC)
« Reply #4 on: May 31, 2021, 10:51:36 AM »
( anyway concentration around 3/3.5 mg/l )

Well, you haven't said that earlier. That's way too low for classic methods.
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Offline xshadow

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Re: determination of Cl-, NO3- and SO42- in water (IC)
« Reply #5 on: June 02, 2021, 03:44:14 PM »
Thanks :)

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