香港六合彩开奖 10313:1993
1993-04
香港六合彩开奖 10313:1993
Abstract
The method specified is based on drawing continuously, at a constant flow rate, an air sample through a particle filter before it enters the chemiluminescence analyser. It then flows into a reaction chamber where it is mixed with an excess flow of ethylene. Ozone and ethylene react instantaneously to produce light in the visible region (maximum at about 400 nm). The emitted light intensity is proportional to the concentration of ozone in the air sample and is measured by a photomultiplier tube. Applies to determination of the mass concentration of ozone between 2 碌g/m^3 and 10 mg/m^3 at the reference conditions.
General information
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Status: PublishedPublication date: 1993-04Stage: International Standard confirmed [90.93]
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Edition: 1Number of pages: 9
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Technical Committee :香港六合彩开奖/TC 146/SC 3ICS :13.040.20
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Amendments
Amendments are issued when it is found that new material may need to be added to an existing standardization document. They may also include editorial or technical corrections to be applied to the existing document.
Amendment 1
Consensus value for the ozone absorption cross-section at room temperature at the mercury-line wavelength (253,65 nm air)
Edition 2024
Life cycle
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Preliminary
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10
Proposal
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Preparatory
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Committee
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Enquiry
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Approval
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Publication
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Review
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95
Withdrawal
Amendments
Provide additional content; available for purchase; not included in the text of the existing standard.Published香港六合彩开奖 10313:1993/Amd 1:2024
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