Determination of total uranium content in surface seawater of the adjacent sea area of eastern Guangdong—using carbonate precipitation-laser-induced fluorescence method

Key Points

• Total uranium concentration in seawater ranged from 1.83 μg/L to 2.25 μg/L, indicating stability across seasons.
• Measurement accuracy remained within 5% deviation from reference values across multiple tests.
• Using a carbonate precipitation-laser-induced fluorescence method, high precision was confirmed through repeated analyses.
• No significant seasonal variation or pollution from human activity was found in the eastern Guangdong coastal area.