Extraction Agent Concentration Detection Method: (titration Method)

1. Required instruments: 1 50ml conical flask, 2 10ml pipettes, and 1 red headed dropper;
2. Reagent (stored in a brown glass bottle, avoiding light and heat)
(1) Environmentally friendly concentration testing agent for gold extraction
(2) Environmentally friendly gold extractant concentration colorant
3. Detection method:
(1) Take 10ml of the tested solution and place it in a 50ml conical flask. Drop about 0.1ml of indicator and shake well (the liquid turns light yellow).
(2) Use a pipette to pipette 10ml of the testing agent for titration: while titrating, shake well while dripping, and observe the color change of the liquid. The pink color is shown as the titration endpoint, and read the amount of testing agent consumed (i.e. milliliters).
(3) Conversion result: concentration of gold extraction agent= ×%