EVALUATION OF CORRELATION BETWEEN EMISSION OF SULFUR OXIDES AND SULFURIC ACID MISTS AND WORKERS PERSONAL EXPOSURE IN A PETROCHEMICAL COMPLEX

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YARAHMADI R.; MORTAZAVI S.B.; ASILIAN HASAN; KHAVANIN A.; MORIDI P.

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Journal: Iran Occupational Health Year:2007 | Volume:4 | Issue:1-2 Page(s): 43-47

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Title

EVALUATION OF CORRELATION BETWEEN EMISSION OF SULFUR OXIDES AND SULFURIC ACID MISTS AND WORKERS PERSONAL EXPOSURE IN A PETROCHEMICAL COMPLEX

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Keywords

SULPHUR DIOXIDEQ4

SULPHURIC ACID MISTSQ4

OCCUPATIONAL EXPOSUREQ4

EMISSION SOURCEQ4

Abstract

Background and Aim: The oxides of sulphur are among those chemical substances that are increasingly used and their consumption is even growing in different places every day. Sulphur oxides are used in chemical industries, paper manufacturing, printing rollers, recovering burned (consumed) coal, supplying and producing sulphuric acid, and in bleaching liquids. Determination and evaluation of the accumulation rate of sulphor oxides and sulphoric acid mists through personal breathing zone, and sources emission from occupational areas of the petrochemical complex.Methods: Sampling (NO=32) was done from the working places and ambient using ASTM D4490 method for the measurement of source pollutants and the standard method of NIOSH. Appendix VIII for pollutants measurement of the breathing zone. Measurement and evaluation of the samples from the occupational areas were performed during the two working shifts (morning and the afternoon) at the ground floor and the first floor of the building.Results: The average concentrations for SULPHUR DIOXIDEs at the ground floor over the working time of both shifts (in the morning and in the afternoon) were 0.011 PPM and 0. 015 PPM, respectively. In addition, the average concentrations for the same shifts at the first floor of the building were 0.019PPM and 0.014PPM, respectively. The average concentrations of SULPHURIC ACID MISTS at the ground floor for the morning and afternoon shifts were 0.36 mg/m3 and 1.47 mg/m3 and at the first floor they were 0.66 mg/m3 and 1.35 mg/m3, respectively. The results of measurements for SULPHUR DIOXIDEs gas revealed that contact with this gas in the Units of 300 and 600 was less than the permitted limit from NIOSH for the exposed workers to permissible exposure limit contacts (PEL TWA= 2PPM). Further, the rate of working contact had a significant correlation with each of the indicators of both shifts and the place where this contact occurred (P<0.001).The measurement results of sulphoric acid mists also revealed that the rate of contact with the mists for the workers being exposed to the gas in the Units of 300 and 600 in the morning shift was less and in the afternoon shift was more than the permissible limit from NIOSH (PEL TWA= 1 mg/m3). In addition, the rate of working contact with sulphoric acid mists in terms of the working time and place showed a significant correlation (P<0.001).Conclusion: , It is concluded that the assumption " the amount of SULPHUR DIOXIDEs is beyond PEL in the breathing zone of workers "is disproved; and also the assumption that" the rate of sulphuric acid mist concentration is more than the permissible limit in the workers breathing zone in the afternoon shift is confirmed while in the morning shift is disproved.

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APA: Copy

YARAHMADI, R., MORTAZAVI, S.B., ASILIAN, HASAN, KHAVANIN, A., & MORIDI, P.. (2007). EVALUATION OF CORRELATION BETWEEN EMISSION OF SULFUR OXIDES AND SULFURIC ACID MISTS AND WORKERS PERSONAL EXPOSURE IN A PETROCHEMICAL COMPLEX. IRAN OCCUPATIONAL HEALTH JOURNAL, 4(1-2), 43-47. SID. https://sid.ir/paper/129233/en

Vancouver: Copy

YARAHMADI R., MORTAZAVI S.B., ASILIAN HASAN, KHAVANIN A., MORIDI P.. EVALUATION OF CORRELATION BETWEEN EMISSION OF SULFUR OXIDES AND SULFURIC ACID MISTS AND WORKERS PERSONAL EXPOSURE IN A PETROCHEMICAL COMPLEX. IRAN OCCUPATIONAL HEALTH JOURNAL[Internet]. 2007;4(1-2):43-47. Available from: https://sid.ir/paper/129233/en

IEEE: Copy

R. YARAHMADI, S.B. MORTAZAVI, HASAN ASILIAN, A. KHAVANIN, and P. MORIDI, “EVALUATION OF CORRELATION BETWEEN EMISSION OF SULFUR OXIDES AND SULFURIC ACID MISTS AND WORKERS PERSONAL EXPOSURE IN A PETROCHEMICAL COMPLEX,” IRAN OCCUPATIONAL HEALTH JOURNAL, vol. 4, no. 1-2, pp. 43–47, 2007, [Online]. Available: https://sid.ir/paper/129233/en

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