A Study on the Amount of Free Silica in the Dusts of Stonecutting Factories and Offering Controlling Solutions

Mohammad Hossein Moafi

A Study on the Amount of Free Silica in the Dusts of Stonecutting Factories and Offering Controlling Solutions

Mohammad Hossein Moafi *

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A Study on the Amount of Free Silica in the Dusts of Stonecutting Factories and Offering Controlling Solutions

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Abstract

This research aims at determining amount of dispersion of free silica and inhalant dusts and contents of free silica in the inhalant aerosol of stonecutting factories and offering engineering control strategies to omit or decrease distribution of the aerosol containing silica. Using standard method Niosh-7601, 40 samples of inhalant dusts were taken from 5 stonecutting factories and concentration of inhalant dusts was calculated by weighting. One sample of each stonecutting factory was analyzed by method of UV-VIS to figure out the amount of free silica. Two volume samples were provided and analyzed by X-ray dispersion to determine type of silica in the inhalant dusts. Concentration of inhalant dusts containing free silica in different worksites is 2.232 mg/m3 in average. The most amounts were found in grinding and polishing worksite amounted to 3.3293 with criteria deviation of 0.54 and the least amount was related to entrance door station, amounted to 1.1191 with criteria deviation of 0.25. The most amount of free silica in the worksites was related to worksite No.3, amounted to 12.15% and the least amount was related to worksite No.4 which was amounted to 4.25%. The most concentration of inhalant dusts was related to worksite No.2, i.e. 2.745 mg/m3 in average, and the least concentration of inhalant dusts was related to worksite No.5, i.e. 2.056 mg/m3 in average. Quartz was the result of analysis of volume samples by XRD method to determine type of silica.

References

6 Cites in Article

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Saeedeh Shirdel,Behin Araminia,Mahdiyeh Salehi,Reza Arezoomandan,Mohammadreza Shalbafan,Leila Kamalzadeh,Seyedvahid Shariat (1998). Necessity for Improvement of Qualitative and Quantitative Contents of Persian Wikipedia in Field of Mental Health.
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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Mohammad Hossein Moafi. 2013. "A Study on the Amount of Free Silica in the Dusts of Stonecutting Factories and Offering Controlling Solutions". Global Journal of Research in Engineering - G: Industrial Engineering GJRE-G Volume 13 (GJRE Volume 13 Issue G3).

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GJRE Volume 13 Issue G3

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

dusts niosh- 7601 silica stonecutting

Classification

GJRE-G Classification FOR Code: 290502p

Submission ReceivedDecember 16, 2012
Peer Review Double Blind
Handling Editor
Accepted January 3, 2013
Published January 15, 2013

Version of record

v1.2

Issue date

July 4, 2013

Language

English

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Article Matrices

Total Score: 83

Country: Iran

Subject: Global Journal of Research in Engineering

Authors: Mohammad Hossein Moafi, Seyed Mostafa Khezri, Farideh Atabi (PhD/Dr. count: 0)

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