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現(xiàn)場抽濾法在懸浮物濁度分析中的應(yīng)用探討

發(fā)布時間:2018-09-08 10:24
【摘要】:以懸浮物濁度標定為研究對象,通過對不同分析方法得到的濃度結(jié)果與濁度儀之間相關(guān)性的分析,探索懸浮物濃度測量的較佳方案。根據(jù)實測數(shù)據(jù)的對比分析,發(fā)現(xiàn)現(xiàn)場抽濾法相較于自然焚燒法、室內(nèi)抽濾法和沉淀烘干法,具有省時間、低費用、高效率和可靠性高的特點。主要原因為室內(nèi)各類分析方法相較于現(xiàn)場抽濾會出現(xiàn)較多不確定的影響因素,包括運輸存儲過程中容器瓶壁的吸附作用、水樣微生物的滋長以及方法本身的系統(tǒng)誤差,如焚燒法操作過程,有機物在高溫環(huán)境下?lián)]發(fā),致使分析處理的研究對象與觀測儀器所測不同,導(dǎo)致產(chǎn)生比較大的誤差,F(xiàn)場抽濾法不但適合在水流比較平穩(wěn)的內(nèi)河使用,而且在流態(tài)復(fù)雜,泥沙濃度變化較大的河口地區(qū)的泥沙濃度測量中也具有的較強實用性。
[Abstract]:Taking the turbidity calibration of suspended solids as the research object, through analyzing the correlation between the concentration results obtained by different analytical methods and the turbidity meter, a better scheme for measuring the concentration of suspended solids was explored. According to the comparison and analysis of the measured data, it is found that the field filtration method has the advantages of saving time, low cost, high efficiency and high reliability compared with the natural incineration method, the indoor filtration method and the precipitation drying method. The main reasons are that there are more uncertain factors in indoor analysis methods than in field filtration, including the adsorption of vessel wall in transportation and storage process, the growth of microorganism in water sample and the systematic error of the method itself. For example, in the operation process of incineration, organic matter volatilizes in high temperature environment, which causes the research object of analysis and treatment to be different from that measured by observation instrument, resulting in relatively large error. The field filtration method is not only suitable for the steady flow of inland rivers, but also has a strong practicability in the measurement of sediment concentration in estuaries where the flow pattern is complex and the sediment concentration varies greatly.
【作者單位】: 中山大學海洋科學學院;
【基金】:國家自然科學基金項目(41376101,41676076)
【分類號】:P714
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本文編號:2230242

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