目錄:北京易科泰生態技術有限公司>>水生態與藻類>>水質分析與監測>> RF-O2RF-O2熒光光纖氧氣測量技術——氧氣測量全面解決方案
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RF-O2熒光光纖氧氣測量技術——氧氣測量全面解決方案
RF-O2熒光光纖氧氣測量技術是基于REDFLASH光極傳感器技術的氧氣測量技術,由歐洲Pyroscience公司及Graz大學等科學家研制生產,由光極氧氣傳感器、測量儀及軟件組成,廣泛應用于環境科學、生態科學、植物科學、動物科學、海洋科學、生物醫學、生物技術、食品科學等各個領域,其主要功能特點如下
測量原理:
REDFLASH光極O2傳感器技術,利用*的O2敏感REDFLASH指示劑,通過610-630nm調制紅光激發,REDFLASH指示劑發出760-790nm紅外熒光,熒光強度隨接觸的O2分子濃度升高而發生熒光淬滅,這種熒光動態通過光纖傳輸到測量儀,測量儀靈敏地檢測其相位漂移并據此換算成O2濃度
應用領域:
技術指標:
應用案例:
案例1:法國Bordeaux大學利用FSO2 4通道熒光光纖氧氣測量儀,對Aquitaine海岸沉積樣芯耗氧進行了測量分析,以研究海洋底棲動物活動(bioirrigation)對海岸帶生態系統生態過程及生物地理化學功能(如沉積有機物的再礦化)的影響。
案例2:芬蘭Turku大學利用FSO2和430μm光極氧探針,對南瓜類囊體懸浮液光合放氧進行了測量分析。
案例3:美國Woods Hole海洋學研究所,利用RF-O2非接觸式光極氧氣傳感器(sensor spot),對海洋無脊椎動物呼吸代謝進行了測量分析,以研究其固有的生物鐘與環境脅迫的關系,這些海洋無脊椎動物體重只有0.5-50mg。圖中為翼足類軟體動物在不同濃度CO2條件下的耗氧率。
案例4:澳大利亞海洋科學研究所、瑞典Gothenburg大學等組成的科學小組,利用Pyroscience的REDFLASH氧氣測量技術,對河鱸(Perca fluviatilis)呼吸代謝進行測量分析,以研究其熱耐受性和適應性的生理機制。他們選擇波羅的海核電站附近的一個瀉湖,核電站排出的熱水進入該瀉湖,在過去30年大量魚類因為不適應水溫升高而滅絕,但河鱸卻得以繁盛,該地成為理想的研究氣候變暖對魚類種群影響的“天然實驗室”。他們測量河鱸呼吸代謝率的同時,還測量其靜脈血液在溫度升高狀態下的氧分壓,靜脈血是河鱸心臟供氧的主要來源,高溫條件下靜脈血氧氣含量被認為是其心臟功能的重要限制因子。
案例5:德國Ulm大學利用FSO2測量儀和50μm可伸縮式RFO2探針,對患者腦脊髓液(CSF)樣品溶解氧進行測量分析,以研究探討神經紊亂及神經炎等疾病的生理和診斷。
案例6:德國農業科學與景觀研究機構,利用FSO2測量儀和RFO2探針,對土壤氧氣進行測量,以評估不同種類蚯蚓在低氧條件下對土壤改良的效率。
案例7:西班牙Valladolid大學利用RFO2熒光光纖氧氣測量技術,監測葡萄酒橡木桶O2吸收——對葡萄酒品質至關重要但一直以來缺乏科學的了解。葡萄酒在橡木桶內(3-24個月)的過程溶解氧至關重要,因為O2調節了葡萄酒整個的熟化過程。
近期部分參考文獻:
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