DESIGN, CONSTRUCTION AND PERFORMANCE OF CHROMIUM MIST GENERATOR

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TIRGAR A.; GOLBABAEI FARIDEH; NOURI JELIANI K.A.; SHAHTAHERI S.J.A.D.; GANJALI M.R.; HAMEDI J.

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Journal: JOURNAL OF SCHOOL OF PUBLIC HEALTH AND INSTITUTE OF PUBLIC HEALTH RESEARCH Year:2007 | Volume:4 | Issue:4 Page(s): 23-32

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Title

DESIGN, CONSTRUCTION AND PERFORMANCE OF CHROMIUM MIST GENERATOR

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Keywords

MIST GENERATORQ4

HEXAVALENT CHROMIUMQ3

SIDE-BY-SIDE SAMPLINGQ4

HEIGHT OF SAMPLINGQ4

Abstract

Background and aim: The chromium MIST GENERATOR is an essential tool for research and for making evidence-based recommendations in evaluating air pollution and its control systems. The purpose of this study was to design and construct a homogeneous chromium MIST GENERATOR and to look at the effects of factors such as sampling height and distance between samplers in SIDE-BY-SIDE SAMPLING on the chromium mist sampling method.Material and Methods: First we developed a MIST GENERATOR, using a chromium electroplating bath in pilot scale. Concentrations of CrO3 and sulfuric acid in plating solution were 125 g L-1 and 1.25 g L-1, respectively. To set up permanent air sampling locations, a Plexiglas cylindrical chamber (75 cm height, 55 cm i.d) was installed as the bath overhead. Sixty holes were made on the chamber in 3 rows (20 in each row). The distance between rows and holes was 15 and 7.5 cm, respectively. Homogeneity and the related factors were studied using a side-by-side air sampling method. Forty-eight clusters of samples were collected on polyvinyl chloride (PVC) filters contained in sampling closed-face cassettes. Cassettes were located 35, 50, and 65 cm above the solution surface with < 7.5 and/or 7.5-15 cm distance between heads. All samples were analyzed by the NIOSH method 7600.Results: ANOVA tests showed no significant differences between locations in SIDE-BY-SIDE SAMPLING (P=0.82) or between different sampling heights or sampler distances (P=0.86 and 0.86, respectively). However, there were notable differences between means of coefficients of variation (CV) in various heights and distances.Conclusion: We conclude that the most chromium mist homogeneity could be obtained at a height of 50 cm from the bath solution surface and with a distance of < 7.5 cm between samplers.

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APA: Copy

TIRGAR, A., GOLBABAEI, FARIDEH, NOURI JELIANI, K.A., SHAHTAHERI, S.J.A.D., GANJALI, M.R., & HAMEDI, J.. (2007). DESIGN, CONSTRUCTION AND PERFORMANCE OF CHROMIUM MIST GENERATOR. JOURNAL OF SCHOOL OF PUBLIC HEALTH AND INSTITUTE OF PUBLIC HEALTH RESEARCH, 4(4), 23-32. SID. https://sid.ir/paper/85201/en

Vancouver: Copy

TIRGAR A., GOLBABAEI FARIDEH, NOURI JELIANI K.A., SHAHTAHERI S.J.A.D., GANJALI M.R., HAMEDI J.. DESIGN, CONSTRUCTION AND PERFORMANCE OF CHROMIUM MIST GENERATOR. JOURNAL OF SCHOOL OF PUBLIC HEALTH AND INSTITUTE OF PUBLIC HEALTH RESEARCH[Internet]. 2007;4(4):23-32. Available from: https://sid.ir/paper/85201/en

IEEE: Copy

A. TIRGAR, FARIDEH GOLBABAEI, K.A. NOURI JELIANI, S.J.A.D. SHAHTAHERI, M.R. GANJALI, and J. HAMEDI, “DESIGN, CONSTRUCTION AND PERFORMANCE OF CHROMIUM MIST GENERATOR,” JOURNAL OF SCHOOL OF PUBLIC HEALTH AND INSTITUTE OF PUBLIC HEALTH RESEARCH, vol. 4, no. 4, pp. 23–32, 2007, [Online]. Available: https://sid.ir/paper/85201/en

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