GB/T 6911-2017Determination of sulfate in water for industrial circulating cooling system and boiler (English PDF)

1 Scope

This standard specifies the industrial circulating cooling water and boiler water sulfate determination.

This standard gravimetric method for sulfate content (SO42- meter) is not less than 10mg/L determination does not apply to the use of barium salt scale

Dispersant industrial circulating cooling water determination of sulfate; spectrophotometry for sulfate content (SO42- dollars) of 5mg/L ~

200mg/L determination; potentiometric titration for sulfate (SO42-) content of 5mg/L ~ 1000mg/L of the determination.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 601 chemical reagent standard titration solution preparation

GB/T 603 chemical reagent test methods used in the preparation of preparations and products

GB/T 6682 analytical laboratory water specifications and test methods

3 rules

Caution --- The strong acids and bases used in this standard are corrosive and should not be inhaled or come into contact with skin during use. Splashed on the body should be immediately

Flush with plenty of water, serious illness should seek medical treatment immediately.

Reagents and water used in this standard, unless otherwise specified, analytical reagents should be used and in line with the provisions of GB/T 6682 Level 3 water.

Test required standard titration solution, preparation and products, did not indicate when the other requirements, according to GB/T 601, GB/T 603 of the rules

Prepared.

4 weight method