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首頁> 美國衛(wèi)生研究院文獻(xiàn)>Sensors (Basel Switzerland) >Development of an In Situ Analyzer Based on Sequential Injection Analysis and Liquid Waveguide Capillary Flow Cell for the Determination of Dissolved Reactive Phosphorus in Natural Waters
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Development of an In Situ Analyzer Based on Sequential Injection Analysis and Liquid Waveguide Capillary Flow Cell for the Determination of Dissolved Reactive Phosphorus in Natural Waters

機(jī)譯：基于順序注入分析和液相波導(dǎo)毛細(xì)管流動(dòng)池的原位分析儀的開發(fā)用于測定天然水中的溶解性磷

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This study presents an innovative technique for the in situ analysis of aquatic biochemical elements detected through wet chemical processes. A new compact in situ phosphate analyzer based on sequential injection analysis, liquid waveguide capillary flow cell and spectrophotometry was developed, and a safe and modular electronics-chemical separation mechanical structure was designed. The sequential injection system of this analyzer was optimized, and the major functions of this analyzer were studied and estimated. With a 10 cm liquid waveguide capillary flow cell and a 6.3 min time cost of detection, the analyzer reaches a detection limit of 1.4 μg·L (≈14.7 nM, [PO ]) and a consumption of 23 μL at most for each reagent. This analyzer was operated in situ and online during two scientific research cruises in the Pearl River Estuary and northern South China Sea. The advantages of this analyzer include its simple versatile manifold, full automation, low chemical consumption and electronics-chemical separate safe structure. Long-term in situ performance of this analyzer will be validated in the future.
機(jī)譯：這項(xiàng)研究提出了一種創(chuàng)新技術(shù)，用于通過濕化學(xué)過程原位分析水生生化元素。開發(fā)了一種基于順序注射分析，液體波導(dǎo)毛細(xì)管流動(dòng)池和分光光度法的新型緊湊型原位磷酸鹽分析儀，并設(shè)計(jì)了安全，模塊化的電子-化學(xué)分離機(jī)械結(jié)構(gòu)。優(yōu)化了該分析儀的順序進(jìn)樣系統(tǒng)，并研究和估算了該分析儀的主要功能。使用10 cm的液體波導(dǎo)毛細(xì)管流動(dòng)池和6.3分鐘的檢測時(shí)間，分析儀的檢測極限達(dá)到1.4μg·L（≈14.7nM，[PO]），每種試劑的最大消耗量為23μL。該分析儀是在珠江口和南海北部的兩次科學(xué)研究航行中現(xiàn)場和在線操作的。該分析儀的優(yōu)勢包括簡單的通用歧管，全自動(dòng)，化學(xué)藥品消耗低以及電子化學(xué)藥品分開的安全結(jié)構(gòu)。該分析儀的長期現(xiàn)場性能將在未來得到驗(yàn)證。

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