Interferences in the Spectrophotometric S-diphenylcarbazide Determination of Environmental Hexavalent Chromium in a Chromium and Zinc Plating Plant

A study on the determination of environmental hexavalent chromium fCr(VI)] was carried out in a chromium and zinc plating plant. The atmospheric particulate was collected both on glass wool filters and with an electrostatic sampler; Cr(VI) was determined by the S-diphenylcarbazide method. The filter...

Full description

Saved in:
Bibliographic Details
Published in:Scandinavian Journal of Work, Environment ＆ Health Environment ＆ Health, 1981-01, Vol.7 (1), p.56-61
Main Authors: Carelli, Giovanni, La Bua, Roberto, Rimatori, Valentino, Porcelli, Domenico, Iannaccone, Angelo
Format: Article
Language:English
Subjects:
Air Pollutants - analysis
Air Pollutants, Occupational - analysis
Carbonates
Chromium
Chromium - analysis
Chromium plating
Diphenylcarbazide
Electrostatic sampler
Electrostatics
Glass wool
Hexavalent chromium
Indicators and Reagents
Industrial hygiene
Metallurgy
Particulate matter
Reagents
Sodium
Spectrophometric determinations
Spectrophotometry
Sulfuric acids
Zinc
Zinc plating
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A study on the determination of environmental hexavalent chromium fCr(VI)] was carried out in a chromium and zinc plating plant. The atmospheric particulate was collected both on glass wool filters and with an electrostatic sampler; Cr(VI) was determined by the S-diphenylcarbazide method. The filtered and electrostatically collected Cr(VI) was extracted with both 1.4 % sulfuric acid and 7% sodium carbonate. Strong interference was observed when extraction was carried out with the acid medium. Alkaline extraction permits 95 ± 6 (± SD) % recovery of the total chromium and has been shown to be suitable in releasing Cr(VI). The analyses of the alkaline samples were carried out with the standard addition method to compensate for a depressive interference of 26 ± 8 (± SD)%. The absorbance decrease of the Cr-Sdiphenylcarbazide complex is a time function, and it should be measured within a few minutes of the reagent addition.
ISSN:0355-3140
1795-990X
DOI:10.5271/sjweh.2565