Methods for the Determination of Carbon Monoxide

Feldstein, M

doi:10.1016/b978-1-4831-9988-7.50009-3

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…In addition to microdi¡usion, there are numerous other methods, which rely on reacting liberated carbon monoxide with a colour reagent, and some are claimed to be capable of measuring endogenous saturation levels as low as 1%. For example, in one method 33 the liberated gas mixed with air is led into a £ask containing an alkaline solution of the silver salt of p-sulphaminobenzoic acid which generates a colloidal solution of silver. The absorbance of this solution is related to the carbon monoxide concentration in the gas sample.…”

Section: Colorimetric Methodsmentioning

confidence: 99%

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Analysis of carbon monoxide

Widdop

2002

Ann Clin Biochem

100

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The degree of exposure to carbon monoxide is most often assessed by measuring the blood carboxyhaemoglobin saturation. This measurement is relevant to investigations of acute accidental or deliberate poisoning and of chronic exposure in a domestic or work place environment. Simple spectrophotometric methods based on differential protein precipitation or dithionite reduction are prone to interference from other haemoglobin pigments and are imprecise for low-level estimations. Automated spectrophotometric devices (CO-oximeters) that estimate simultaneously total haemoglobin, percentage oxyhaemoglobin and percentage carboxyhaemoglobin have acceptable accuracy for carboxyhaemoglobin saturation levels of 45% and are recommended for most clinical purposes. For the investigation of low-level exposure and the detection of increased haemolysis in neonates, more sensitive methods involving the release of carbon monoxide and its measurement by gas chromatography are required. Gas chromatographic methods are also appropriate when examining post-mortem blood samples where putrefaction or heat stress has resulted in a signi cant change in haemoglobin composition.

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Section: Colorimetric Methodsmentioning

confidence: 99%

“…For example, in one method 33 the liberated gas mixed with air is led into a £ask containing an alkaline solution of the silver salt of p-sulphaminobenzoic acid which generates a colloidal solution of silver. The absorbance of this solution is related to the carbon monoxide concentration in the gas sample.…”

Section: Colorimetric Methodsmentioning

confidence: 99%

Analysis of carbon monoxide

Widdop

2002

Ann Clin Biochem

100

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“…Carbon monoxide measured by using multi sensor is an automatic and uninterrupted system, it works based on the absorption of infrared radiation by the CO molecule (Feldstein, 1967). This multi-gas analyser incorporated with a selective gas filter to eliminate or reduce the interference raised from other gases like carbon dioxide, water vapour, oxides of nitrogen and sulphur.…”

Section: Carbon Monoxidementioning

confidence: 99%

Carbon Monoxide Air Quality Index (AQI-Co) and Seasonal Trend (ST-Co) in Chennai Traffic Zones, India

P¹,

Tjprc²

2019

IJMPERD

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The present scientific study is to detect the concentration of carbon monoxide and estimate the air quality index (AQI) line with carbon monoxide in the metropolitan Chennai city. The representative monitoring was conducted from January 2018 to December 2018, in the high population locality of Porur (L1), Nerkundram (L2), Thiruvanmiyur (L3), T. Nagar (L4), Vadapalani (L5), Nungambakkam (L6) and Mount road (L7). The multi-gas analyser with Non-dispersive Infra-Red (NDIR) sensor is an automatic and uninterrupted system used for the quantification of CO. In the research, monthly mean assessment of CO indicates, the highest (8.7 mg/m3) and lowest (0.8 mg/m3) level of CO was detected at L5 in the month of October and June respectively, and the annual assessment of CO reveals the observed values are very close to each other at all locations, it implies there is no much different observed between the monitored locations and observed.8 mg/m3 as drifting. The seasonal mean of CO revealed, the highest level of CO detected at L2 during the monsoon and summer season was experienced the lowest value of CO at all locations. The most significant study of AQI-CO is resulted as "moderate category" at L1and L5 during the season of monsoon and pre-monsoon respectively, similar, L2 and L3 laid down under "moderate category" during the season of pre-monsoon, other than these four moderate categories, all location was exhibited "good category" at all seasons. The maximum permissible limit of CO is established as in the term of 8-hours and 1-hour exposure in the NAAQS-CPCB 2009; hence the correlation study between the daily and annual means versus prescribed National specification is questionable. However, the estimated air quality index as per USEPA rule indicates, 86% of the days laid down under "good category" and 14% of the days were a moderate category at selected locations in the Chennai city. Since it was a good category, Chennai was continuously enriching with public and private vehicles, hence the future; all found good categories may extend to "moderate" and observed four moderate categories extend to "unhealthy", hence the governing authority to take appropriate preventing and controlling statistics on the vehicle emission.

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“…Previously described methods for CO measurement include microdiffusion, colorimetric, infrared absorption, volumetric or spectrophotometric methods (Feldstein, 1967). Other investigators have use manometric oxidation, microcalorimetric or indirect methods (Commins, 1975).…”

Section: Analytical Methods For the Analysis Of Carbon Monoxidementioning

confidence: 99%

Carbon monoxide in biological systems: an experimental and clinical study

Åberg¹

2008

Acta Anaesthesiol Scand

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Methods for the Determination of Carbon Monoxide

Cited by 6 publications

References 9 publications

Analysis of carbon monoxide

Analysis of carbon monoxide

Carbon Monoxide Air Quality Index (AQI-Co) and Seasonal Trend (ST-Co) in Chennai Traffic Zones, India

Carbon monoxide in biological systems: an experimental and clinical study

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