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Journal of Chemistry
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2021
/
Article
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Tab 7
/
Research Article
Study on The Influence of Direct Ground Liquid CO
2
Injection on Soil Chemical Properties in Subsidence Areas under Shallow Buried Geological Conditions
Table 7
Soil pH classification table [
25
].
pH
Soil acidity and alkalinity
<4.5
Very strong acidic
4.5∼5.5
Strong acidic
5.5∼6.0
Acidic
6.0∼6.5
Weak acidic
6.5∼7.0
Neutral
7.0∼7.5
Alkalescent
7.5∼8.5
Alkaline
8.5∼9.5
Strong alkaline
>9.5
Very strong alkaline