The content of petroleum pollutants in environmental water is one of the indicators reflecting water quality. This article employs a three-wavelength quantitative method to test the oil content in water,which offers convenience in sample testing and ensures accurate data.The ……

The content of free silicon dioxide is a crucial component in the determination of dust pollutants in the air. In this study, the standard curve method was employed to measure the silicon dioxide content,demonstrating a simple procedure and achieving satisfactory recovery rat……

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