Integration of ion exchange and bacterial denitrification shows improved nitrogen isotope analysis in freshwater samples, indicating better accuracy.
The bacterial denitrification method ( Pseudomonas aureofaciens ) is a widely used pretreatment technique for nitrate (NO 3 ⁻) and nitrite (NO 2 ⁻) nitrogen and oxygen isotope analysis, but concurrent reduction of both species to...
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Hu et al. (2026) studied this question.
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