不同环境条件对水质总磷测定结果的影响研究

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关键词：水质；温度；色度；总磷

中图分类号：X832 文献标识码：A 文章编号：1008-9500（2025）12-0005-03

DOI： 10.3969/j.issn.1008-9500.2025.12.002

Abstract： Total phosphorus servesas a critical indicatorfor assessing water pollution levels，and accurate determination of total phosphorus concentrationis essentialfor waterqualitymonitoringandenvironmental protection.Basedonactual watersampleexperiments，thisstudyinvestigatedtheefectsofdigestiontemperature，chroma，andsampleoncentration on total phosphorus determination.The experimental findings demonstrate thatcomplete oxidation of phosphorus is achieved at 120 ΔC ，significantly enhancing measurement accuracy. Chroma interferes with total phosphorus determination， yielding elevated results in samples with higher chroma.A linear relationship exists between sample concentration and absorbance; however， whenconcentrations approach the maximum detection limit，further increases may cause saturation inthe color development reaction，thereby compromising measurement accuracy.The research results provide technical basisforoptimizing thetotal phosphorus determination method，whichcanefectively improve theaccuracyofwaterquality monitoring.

Keywords： water quality; temperature; chroma; total phosphorus

总磷是指水中所有无机磷和有机磷的总和。（剩余3058字）