Question

Step by Step

Given the following analysis of ground water:

Ca²⁺    43.12 mg/L          SO₄^2-     13.22 mg/L

Na⁺     87.15 mg/L          Cl^-         123.89 mg/L

K⁺       3.22 mg/L           HCO₃^-   213.7 mg/L

Mg²⁺   15.22 mg/L          NO₃^-     3.23 mg/L  

Fe²⁺ 2.13 mg/L            pH       8.3

(A)   Convert all values to meq/L.

(B)    Do an anion-cation balance.

(C)   Plot the position on a trilinear diagram (below)

(D)   Make a Stiff pattern of the analysis (on regular graph paper)

(E)    Make a Schoeller diagram of the analysis (use semi-log)

Answer 1

By using the equivalent unit, we can obtain:

Cation:

Anions

then reaction error

percentage

Therefore the reaction error between cation and anion is different from each other of 0.32%

C) Plot the position on a trilinear diagram:

We have

percetage of each element

Cation

Anion

Stiff Diagram

Scholler Diagram