Quantitative detection of trace H2S based on ultraviolet differential optical absorption spectroscopy

H2S Gas Detection Based On Optical Waveguide

The presence of H2S ( hydrogen sulphide ) gas in oil and gas exploration can give rise to critical safety problems because of its corrosivity and toxicity. In order to protect people and equipment, there is a need for a real-time,remote and reliable seneor that can detcet the concentration of H2S gas. The best way to monitor H2S gas concentration is optical-electrochemical sensor technology. At...

Multi Axis Differential Optical Absorption Spectroscopy

Multi Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) is a novel measurement technique that represents a significant advance on the well-established zenith scattered sunlight DOAS instruments which are mainly sensitive to stratospheric absorbers. MAX-DOAS utilizes scattered sunlight received from multiple viewing direc-5 tions. The spatial distribution of various trace gases close ...

Quantitative Determination of Hemoglobin Spectral Absorption Coefficient due to Optical Mechanical Clearing of Skin in Diffuse Reflective Spectroscopy Method

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Differential optical absorption spectroscopy system used for atmospheric mercury monitoring.

A high-resolution differential optical absorption spectroscopy (DOAS) system for long-path atmospheric pollution monitoring is described. The system, consisting of a broadband lamp and a dispersive, fast-scanning optical receiver, separated by a few kilometers, was used in measurements of different pollutants, highlighted by the monitoring of the local concentration of atomic mercury. Mercury l...

Quantitative absorption spectroscopy of nano-objects