A multi-channel chemical sensor and its application in detecting hydrothermal vents

Zhen Cai, Luis Mur, Jiwan Han, Kui Wang, Huawei Qin, Ying Ye

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

2 Dyfyniadau (Scopus)


There are well-established chemical and turbidity anomalies in the plumes occurring vicinity of hydrothermal vents, which are used to indicate their existence and locations. We here develop a small, accurate multi-channel chemical sensor to detect such anomalies which can be used in deep-sea at depths of more than 4 000 m. The design allowed five all-solid-state electrodes to be mounted on it and each (apart from one reference electrode) could be changed according to chemicals to be measured. Two experiments were conducted using the chemical sensors. The first was a shallow-sea trial which included sample measurements and in situ monitoring. pH, Eh, CO 3 2− and SO 4 2− electrodes were utilized to demonstrate that the chemical sensor was accurate and stable outside the laboratory. In the second experiment, the chemical sensor was integrated with pH, Eh, CO 3 2− and H2S electrodes, and was used in 29 scans of the seabed along the Southwest Indian Ridge (SWIR) to detect hydrothermal vents, from which 27 sets of valid data were obtained. Hydrothermal vents were identified by analyzing the chemical anomalies, the primary judging criteria were decreasing voltages of Eh and H2S, matched by increasing voltages of pH and CO 3 2− . We proposed that simultaneous detection of changes in these parameters will indicate a hydrothermal vent. Amongst the 27 valid sets of data, five potential hydrothermal vents were targeted using the proposed method. We suggest that our sensors could be widely employed by marine scientists.
Iaith wreiddiolSaesneg
Tudalennau (o-i)128-134
Nifer y tudalennau7
CyfnodolynActa Oceanologica Sinica
Rhif cyhoeddi9
Dyddiad ar-lein cynnar05 Medi 2019
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 05 Medi 2019

Ôl bys

Gweld gwybodaeth am bynciau ymchwil 'A multi-channel chemical sensor and its application in detecting hydrothermal vents'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

Dyfynnu hyn