Water quality determines protist taxonomic and functional group composition in a high-altitude wetland of international importance

An, Ruizhi; Liu, Yang; Pan, Chengmei; Da, Zhen; Zhang, Peng; Qiao, Nanqian; Zhang, Feng; Ba, Schölkens

doi:10.1016/j.scitotenv.2023.163308

Cited by 9 publications

(2 citation statements)

References 42 publications

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“…We now demonstrate the utility of the compensation methods described above to the salinity measurement. Salinity measurements are important in many areas of environmental and marine science such as global warming, − ecological variations, − and biotic activities. − The refractive index of seawater changes by Δ n ≈ 2 × 10 –3 /% salinity, so the demonstrated sensitivity of a GMR sensor in the low 10 –5 range allows the determination of salinity with high accuracy. Salinity measurements are typically conducted in the field and involve mechanical vibrations and temperature fluctuations; hence, salinity measurements are ideally suited to showcasing the benefit of the compensation methods introduced here.…”

Section: Resultsmentioning

confidence: 99%

“…We now demonstrate the utility of the compensation methods described above to the salinity measurement. Salinity measurements are important in many areas of environmental and marine science such as global warming, 34 − 36 ecological variations, 37 − 39 and biotic activities. 40 − 42 The refractive index of seawater changes by Δ n ≈ 2 × 10 –3 /% salinity, 43 so the demonstrated sensitivity of a GMR sensor in the low 10 –5 range 4 allows the determination of salinity with high accuracy.…”

Section: Resultsmentioning

confidence: 99%

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Noise Tolerant Photonic Bowtie Grating Environmental Sensor

Li,

Suliali,

Sahoo

et al. 2024

ACS Sens.

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Resonant photonic refractive index sensors have made major advances based on their high sensitivity and contact-less readout capability, which is advantageous in many areas of science and technology. A major issue for the technological implementation of such sensors is their response to external influences, such as vibrations and temperature variations; the more sensitive a sensor, the more susceptible it also becomes to external influences. Here, we introduce a novel bowtieshaped sensor that is highly responsive to refractive index variations while compensating for temperature changes and mechanical (linear and angular) vibrations. We exemplify its capability by demonstrating the detection of salinity to a precision of 0.1%, corresponding to 2.3 × 10 −4 refractive index units in the presence of temperature fluctuations and mechanical vibrations. As a second exemplar, we detected bacteria growth in a pilot industrial environment. Our results demonstrate that it is possible to translate high sensitivity resonant photonic refractive index sensors into real-world environments.

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Section: Resultsmentioning

confidence: 99%

“…We now demonstrate the utility of the compensation methods described above to the salinity measurement. Salinity measurements are important in many areas of environmental and marine science such as global warming, 34 − 36 ecological variations, 37 − 39 and biotic activities. 40 − 42 The refractive index of seawater changes by Δ n ≈ 2 × 10 –3 /% salinity, 43 so the demonstrated sensitivity of a GMR sensor in the low 10 –5 range 4 allows the determination of salinity with high accuracy.…”

Section: Resultsmentioning

confidence: 99%