ILO Home
Go to the home page
Site map | Contact us Français | Español

CISDOC database

Document ID (ISN)38045
CIS number 82-1261
ISSN - Serial title 0003-2654 - Analyst
Year 1981
Convention or series no.
Title Sample re-radiation effects in the quantitative analysis of crystalline silica in foundry samples by infrared spectrophotometry
Bibliographic information Nov. 1981, Vol.106, p.1240-1242. Illus. 19 ref.
Abstract In the quantitative analysis of crystalline silica in samples of respirable dust from foundries, compounds such as graphite and magnetite act as black body radiators and cause attenuation of the absorption bands of interest in the infrared (IR) spectrum. The use of a 9-µm germanium cut on/blocking filter reduces sample re-radiation effects to such a level that the results from inexpensive IR spectrophotometer are within 10% of those obtained by an asynchronously double-chopped instrument or by x-ray diffraction.
Descriptors (primary) silica; respirable dust; foundries; dust analysis; dust measurement
Descriptors (secondary) infrared spectrophotometry; interferences; description of technique; accuracy
Document type D - Periodical articles
Subject(s) Dust, aerosols and related diseases
Broad subject area(s)
Browse category(ies) Foundries, metalcasting and forging operations