Acid-Base Accounting (ABA)
nounPronunciation: /ˈæsɪd beɪs əˈkaʊntɪŋ/
A laboratory analytical protocol that quantifies sulfide minerals (acid-generating potential) and carbonate minerals (acid-neutralizing potential) in mine waste to predict long-term water chemistry. The net acid-generating or acid-neutralizing capacity guides waste placement decisions and treatment system design.
Plain English
A lab test that measures how much acid-producing and acid-neutralizing minerals are in mine waste to predict if water will become acidic.
Etymology & History
Usage
"Acid-base accounting results determined that the waste rock contained sufficient buffering minerals to maintain neutral pH without active treatment."
Style guide notes: Spell out 'Acid-Base Accounting' on first reference; ABA acceptable thereafter in technical contexts.
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Related Terms
Frequently Asked Questions
What does a positive acid-base accounting result mean?
Positive ABA indicates acid-generating potential exceeds neutralization capacity, requiring waste segregation, covers, or passive/active treatment systems.
How is acid-base accounting conducted?
Samples are titrated to measure total sulfur (acid potential), inorganic carbon (neutralizing potential), and net acid-generating capacity in laboratory settings.
Why Test Candidates on This?
ABA proficiency is critical for waste classification, treatment design, and regulatory compliance in mine reclamation projects.
Required skill level: Mid