BBC

Testing for negatively charged ions

Unlike the other tests described on this page, the test for carbonate ions works whatever acid is added. Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first.
BBC

C4 - Identify the ions in an ionic compound

Cations can be identified with flame tests or precipitate tests using sodium hydroxide and ammonia solutions. Anions (halide, sulfate, and carbonate ions) can be identified using precipitate tests or ...
JSTOR Daily

Sulphate in Bog Waters: A Comparison of Ion Chromatography with Mackereth's Cation-Exchange Technique and a Revision of Earlier Views on Cause of Bog Acidity

(1) Sulphate was measured by ion chromatography and by Mackereth's cation-exchange technique in bog waters of variable colour and dissolved organic matter. Mackereth's technique yielded considerably ...
Stockhouse

BQE Water Completes Performance Test for Plant that Simultaneously Removes Sulphate and Selenium at a US Mine

VANCOUVER, BC, May 24, 2023 /CNW/ - BQE Water Inc. (TSXV: BQE), a leader in the treatment and management of mine impacted waters, has successfully completed the performance test of the first ...