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Development of a Portable Phosphorus Detector.

Authors
Davey-FK
Source
NIOSH 1974 Dec:15 pages
Link
NIOSHTIC No.
00118856
Abstract
The characteristics of an alkali flame detector (AFD) are described in relation to use as a portable phosphorus (7723140) detector. Operating principles are reviewed and tabulated data on AFD sensitivity toward a variety of pesticides is included. Different configurations of the AFD are evaluated based on accuracy, stability, sensitivity, and cost. Alternative detectors, including a chemiionization detector (CID) and a flame photometric detector (FPD), also are considered. Hold up, particulates, hydrocarbon removal, sample flow, hydrogen flow control, and electric power are discussed as important factors in the design of a portable phosphorous detection system. The author concludes that the AFD is too heavily dependent on very precise control of hydrogen flow to enable its use as a portable phosphorous detector. The sensitivity of the FPD to sulfur precludes its use in the phosphorus detector system. The CID is recommended for use in conjunction with cesium- bromide as the alkali salt and catalytic conversion of hydrocarbons. Further testing of the FPD is suggested to reduce sulfur interference.
Keywords
NIOSH-Contract; Contract-099-74-0097; Detectors; Equipment-design; Analytical-instruments; Pesticides-and-agricultural-chemicals; Physical-properties; Air-quality-measurement; Workplace-studies; Air-quality-control;
CAS No.
7723-14-0;
Publication Date
19741201
Funding Type
Contract;
Fiscal Year
1975
NTIS Accession No.
PB82-230186
NTIS Price
A03
Identifying No.
Contract-099-74-0097
Source Name
Environmental Science Division, The Bendix Corporation, Baltimore, Maryland
State
MD; OH;
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