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Topic: What gravimetric analysis have you tired?  (Read 12976 times)

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Offline Alberto_Kravina

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What gravimetric analysis have you tired?
« on: May 02, 2006, 04:12:38 PM »
I haven't performed many gravimetric analysis yet ;), here a small list of the ones that I performed:

1.)Determination of w(FeSO4) of FeSO4p.a.
Result: 99.2%
Result with Reinhard-Zimmermann method: 99.01%

2.)Determination of w(Fe) of magnetite.
Result: 68.23%
Result with Reinhard-Zimmermann method: 65.03%. :(  :-[

3.)Determination of w(FeSO4) of an iron sulfate used to preciptate phosphates in water purification plants.
Result: w(FeSO4) = 88.68%
Result with Reinhard-Zimmermann method: 88.21%

4.)Determination of w(Fe) of steel.
Result: 98.79%
Result with Reinhard-Zimmermann method: 98.50%

5.)Determination of w(NaCl) of NaClp.a.
Result: 99.45%
Result with Mohr method: 99.91%

6.)Determination of Beta(NaCl) of seawater.
Result: 30,16 g/L
Result with Mohr method: 28.93g/L

7.)Determination of w(NaCl) of thawing salt.
Result: 94.78%
Result with Mohr method: 95.00%

8.)Determination of w(NaCl) of a mixture of NaCl and Na2SO4
Result: 40,56%
Result with Mohr method: 40.06%

9.)Determination of w(Ni(NO3)2) of Ni(NO3)2p.a.
Result: 99.30%

10.)Determination of w(Ni) of a Chromium-Nickel steel.
Result: 14,68%

11.)Determination of w(CaCl2) of CaCl2p.a.
Result: 99.10%

12.)Determination of w(CaCO3) in a sample of marmor (I stole the sample from my dad's mineral collection ;D, Don't tell him I did ....shhhhh.... ;) )
Result: 92,16%
I analyzed the same sample with acid-base titration (back titration): Result: 92.68%

13.)Determination of w(CaSO4*2H2O) in a mineral.
Result: 90,34%

14.)Determination of w(K2O) of a fertilizer.
Result: 12,6%

15.)Determination of w(Na2SiO3) of a sodium silicate solution.
Result: w = 5,30%

16.)Determination of w(Pb(NO3)2) of Pb(NO3)2 p.a.
Result: 98.54%

17.)Determination of w(C) of a sample of coal.
Result: 99.10%

18.)Determination of w(Al) of a sample of Bauxite.
Result: 49.91%

19.)Determination of w(MgO) of a sample containing MgO
Result: 54.65%

Well, that's all, but I think that it's enough ;)

I would be curious to know which ones you performed...

Edit: added resluts with Mohr/Reinhard-Zimmermann method
« Last Edit: May 20, 2006, 11:35:08 AM by Alberto_Kravina »

Offline kevins

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Re: What gravimetric analysis have you tired?
« Reply #1 on: May 16, 2006, 11:03:18 PM »
Determination of gypsum purity (CaSO4*2H2O) in FGD product.
Result= <99%.

Determination of S in coal by BaCl2
Result = 0.3%

Determination of suspend solid in water and waste water

  :)

Offline billnotgatez

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Re: What gravimetric analysis have you tired?
« Reply #2 on: May 19, 2006, 03:59:36 AM »
Did you mean: Mohr method

Offline Alberto_Kravina

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Re: What gravimetric analysis have you tired?
« Reply #3 on: May 20, 2006, 11:36:22 AM »
Bill: Yes, thanks for making notice me this typing mistake, already corrected :)

Offline mookxi

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Re: What gravimetric analysis have you tired?
« Reply #4 on: June 02, 2006, 02:14:41 AM »
Determination of sulfur as sulfate in lawn food, only just one  :P

Offline elmyhalily13

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Re: What gravimetric analysis have you tired?
« Reply #5 on: February 18, 2007, 02:17:16 AM »
Hello fellas... I haven't try many gravimetric analysis before. What i have tried is only the Mohr method. Does anyone knows how many methods are there for gravimetric analysis?

Offline alhemicar

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Re: What gravimetric analysis have you tired?
« Reply #6 on: March 26, 2008, 02:27:43 PM »
I tried Ni and Zn together,
Ba,
Fe.

I'm not so impressed with gravimetric analysis  ;D

Offline sarang_pen

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Re: What gravimetric analysis have you tired?
« Reply #7 on: January 04, 2010, 12:17:19 AM »
hi...
I want to know How to determine AL-IN bauxite

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