Ezzat Marzouk

4 Questions 13 Answers 0 Followers

Questions related from Ezzat Marzouk

Why soil pH is driven to be neutral under reduced conditions regardless initial pH values?

If the soil pH is alkaline or acidic, after some time under reducing condition the soil system will push its pH value to the neutral status. Do you have a clear explanation for this? Thanks.

07 July 2016 6,045 9 View

How can I extract values that are less than 10 from different values in column to be in a new column?

If I have values in column A in a spreadsheet starting from A1 to A5 as for example 1, 2, 3.5, 4, 6 and I need to extract all values less than 5 in a new column, what is the best method? And how...

10 October 2013 3,159 8 View

What is the correct approach in calculating the average pH values measured by a combined electrode?

Is it a directed ordinary mean or taking the anti-log values at first then getting the average and return to the log values again? I think if we measured it by electrode that is fair to calculate...

08 August 2013 3,422 20 View

How to use SEC-ICP-MS to characterise the metal-bonded humic acid?

I am asking for technical details of the SEC column, including the type of column used, the standard material, any protocol that could help in this issue. What are the critical points in terms of...

08 August 2013 3,593 9 View