Field Testing of an Optical in Situ Nitrate Sensor in Three Irish Estuaries

IF 0.6 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Biology and Environment-Proceedings of the Royal Irish Academy Pub Date : 2022-01-01 DOI:10.3318/BIOE.2014.02

S. O’Boyle, P. Trickett, Adam Partington, C. Murray

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引用次数: 4

Abstract

Abstract:ABSTRACTIn situ measurements of nitrate (NO3) were made using a submersible ultraviolet nitrate sensor (SUNA) in three Irish estuaries (Bandon, Blackwater and Lee) in January and February 2012. Measurements were compared against discrete water samples analysed in the laboratory. There was excellent agreement between the SUNA and laboratory measurements, with the variation in in-situ nitrate measurements explaining nearly 100% of the variation in laboratory measurements (r2 = 0.99, with a negative bias of ∼10%). In each estuary there was a conservative mixing relationship between salinity and nitrate, indicating that the main source of nitrate to these estuaries in winter is from the main inflowing river. The highest nitrate concentration of 235.2µM at salinity 0.7 was found in the Lee Estuary and the lowest concentration of 7.5µM at salinity 34.6 was found in Cork Harbour. The successful demonstration of this technology in Irish estuaries provides a powerful example of how future developments in this field will allow the real-time assessment of environmental conditions in these environments.

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光学原位硝酸盐传感器在三个爱尔兰河口的现场测试

摘要/ Abstract摘要:2012年1月和2月，利用水下紫外硝酸盐传感器(SUNA)在爱尔兰三个河口(Bandon、Blackwater和Lee)进行了硝酸盐(NO3)的原位测量。测量结果与实验室分析的离散水样进行了比较。SUNA和实验室测量结果非常吻合，原位硝酸盐测量值的变化几乎可以解释实验室测量值的100%的变化(r2 = 0.99，负偏差为~ 10%)。各河口盐度与硝酸盐呈保守混合关系，说明冬季各河口硝酸盐的主要来源为入流干流。在盐度为0.7时，利河口硝酸盐浓度最高，为235.2µM;在盐度为34.6时，科克港硝酸盐浓度最低，为7.5µM。这项技术在爱尔兰河口的成功演示为该领域的未来发展如何能够实时评估这些环境条件提供了一个强有力的例子。

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来源期刊

Biology and Environment-Proceedings of the Royal Irish Academy 环境科学-环境科学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： The journal aims to offer a broad coverage of the subject area, including the following: - biology and ecology of the Irish flora and fauna - microbial ecology - animal, plant and environmental physiology - global change - palaeoecology and palaeoclimatology - population biology; conservation of genetic resources - pollution and environmental quality; ecotoxicology - environmental management - hydrology - land use, agriculture, soils and environment. Submissions on other relevant topics are also welcome, and papers of a cross-disciplinary nature are particularly encouraged.