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Conversion of Fe2O3 into Fe (ppm/ppb)

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  • Conversion of Fe2O3 into Fe (ppm/ppb)

    I have 4.4% of Fe2O3 (as measured by XRF) can anybody help me to convert it into Fe in ppm or ppb.

    Thanks
    Regards
    Farooq

  • #2
    Re: Conversion of Fe2O3 into Fe (ppm/ppb)

    Originally posted by hilalfarooq2
    I have 4.4% of Fe2O3 (as measured by XRF) can anybody help me to convert it into Fe in ppm or ppb.

    Thanks
    Regards
    Farooq
    Hi, what is your Fe2O3 in, is it soil, or is it made up in a solution?

    Comment


    • #3
      Re: Conversion of Fe2O3 into Fe (ppm/ppb)

      molecular weight Fe2O3=159.69g
      molecular weight Fe=55.845g
      4.4%=44000 ppm
      159.69----------55.845*2 g Fe
      44000-----------x

      x=44000*55.845*2/159.69
      x=30774.38 ppm Fe

      Comment


      • #4
        Re: Conversion of Fe2O3 into Fe (ppm/ppb)

        Hi Elena, sometimes questions like this have been asked before, but it has turned out that the questioner has a lab result from a sample that has been dissolved up, and run against a set of standards. This is why we can always do with a bit more info.

        Comment


        • #5
          Re: Conversion of Fe2O3 into Fe (ppm/ppb)

          Originally posted by Mrs X
          Hi, what is your Fe2O3 in, is it soil, or is it made up in a solution?
          This is in the soil sample and measured by non-distructive method.

          Comment


          • #6
            Re: Conversion of Fe2O3 into Fe (ppm/ppb)

            Originally posted by hilalfarooq2
            This is in the soil sample and measured by non-distructive method.
            In post #3, Elena gave the correct method.

            Comment


            • #7
              Re: Conversion of Fe2O3 into Fe (ppm/ppb)

              Hi Gents,

              To convert Fe2O3 to Fe divide by 1.4298.

              To convert % to PPM multiply by 10000.

              It is that simple.

              He is obviously analysing iron ore by XRF fusion or PP.

              Comment


              • #8
                Re: Conversion of Fe2O3 into Fe (ppm/ppb)

                Originally posted by Danny of guild View Post
                Hi Gents,

                To convert Fe2O3 to Fe divide by 1.4298.

                To convert % to PPM multiply by 10000.

                It is that simple.

                He is obviously analysing iron ore by XRF fusion or PP.
                Hi...would you please late me know how you work out To convert Fe2O3 to Fe divide by 1.4298.
                I mean how you work out to get 1.4298

                Thanks

                Comment


                • #9
                  Re: Conversion of Fe2O3 into Fe (ppm/ppb)

                  Originally posted by Danny of guild View Post
                  Hi Gents,

                  To convert Fe2O3 to Fe divide by 1.4298.

                  To convert % to PPM multiply by 10000.

                  It is that simple.

                  He is obviously analysing iron ore by XRF fusion or PP.
                  Hi...would you please late me know how you work out To convert Fe2O3 to Fe divide by 1.4298.
                  I mean how you work out to get 1.4298
                  can you email it to aj4u2000@hotmail.com ...I don't know how to get the answer back from this site.
                  Thanks

                  Comment


                  • #10
                    Re: Conversion of Fe2O3 into Fe (ppm/ppb)

                    Originally posted by Unregistered View Post
                    Hi...would you please late me know how you work out To convert Fe2O3 to Fe divide by 1.4298.
                    I mean how you work out to get 1.4298

                    Thanks
                    It is worked out from the atomic weights of the elements, and calculated as a proportion:

                    Atomic weight Fe = 55.847g/mol, atomic weight oxygen = 15.999g/mol

                    2 x 55.847 + 3 x 15.999 = 159.691grams per mole (g/mol)

                    The iron proportion is (2 x 55.847)/159.691 = 0.6994. The reciprocal is 1.430, so you can either divide by 1.430 or multiply by 0.6994 to get the weight of iron in iron oxide.

                    Note however, iron oxide is rarely pure Fe2O3, there are usually other oxide species and hydroxides present.

                    Comment


                    • #11
                      Re: Conversion of Fe2O3 into Fe (ppm/ppb)

                      Iím really really thankful to you, I really speechless and I canít how to express my thanks to you.
                      Thanks again and have nice day, please keep in touch
                      Aj
                      Aj4u2000@hotmail.com

                      Comment


                      • #12
                        Re: Conversion of Fe2O3 into Fe (ppm/ppb)

                        Hi this is Aj again and thanks for the last respond..... I would to ask you if you can help me to understand and use the g/mol for exp I have bottle of 85% substance liquid or solid given info in g/mol and I need to prepare for exp 100ml or 10%.
                        Plwase And some equation I can use for the future in the lap when I need to prep something.
                        have nice day
                        Aj

                        Comment


                        • #13
                          Re: Conversion of Fe2O3 into Fe (ppm/ppb)

                          Originally posted by Unregistered View Post
                          Hi this is Aj again and thanks for the last respond..... I would to ask you if you can help me to understand and use the g/mol for exp I have bottle of 85% substance liquid or solid given info in g/mol and I need to prepare for exp 100ml or 10%.
                          Plwase And some equation I can use for the future in the lap when I need to prep something.
                          have nice day
                          Aj
                          Hi AJ, sounds like you need to be doing an introductory lab prep course.

                          If your material is 85 % pure, and you need to make up 100mL of 10% (w/v), you NEED 10g of your material, which is 85% pure.

                          Weigh out 100%/85% x 10g = 11.76g of your impure material.

                          Making solutions of varying molarity is more complicated, but for a 1M solution, you would need to accurately weigh out approximately 1 Mol to accurately make up 1L of this solution. You then calculate the concentration acurately from the actual amount you weigh out. If you wanted 100mL of 1M solution, you would accurately weigh out approximately 0.1 mol. etc etc etc.

                          Comment


                          • #14
                            find out 1.4298

                            (atomic mass of fe * 2) + ( atomic mass of O * 3) /atomic mass of fe * 2 =1.4297

                            Comment

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