Taking the soluble copper content in water quality samples as the research object, a mathematical model was established and flame atomic absorption spectrophotometry was used to analyze the ...

STEP 1 - Dissolution Pour some about 25 mL of concentrated nitric acid into a beaker. Toss in a silver/copper quarter. You'd better do this in a fume hood because ... Assuming you haven't died from ...

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Copper mining is crucial for modern infrastructure ... require large-scale excavation and chemicals such as sulfuric acid, which contaminate rivers, poison soil, and pollute the air.