Exposure Assessment to Dust and Free Silica for Workers of Sangan Iron Ore Mine in Khaf, Iran

Naghizadeh, Ali; Mahvi, Amir Hossein; Jabbari, Hossain; Derakhshani, Elham; Amini, Heresh

doi:10.1007/s00128-011-0375-z

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…An exposure assessment to dust and free silica for workers of Sangan iron ore mine in Khaf, Iran was conducted. Comparison to Iranian standard for respirable dust concentrations (0.11 mg/m 3 ) and international standards (ACGIH=0.1 mg/m 3 and NIOSH=0.05 mg/m 3 ), it was found that dust and free silica amounts were much higher than national and international standard levels in this mine 14 ) . The dust concentration and its silica percentage in an ironstone ore in southern Khorasan province were determined, founded that the average percentage of silica in the mine was 15.5% and the measured respirable and total dust concentration was several times higher than standard concentration 9 ) .…”

Section: Discussionmentioning

confidence: 66%

Determination of crystalline silica in respirable dust upon occupational exposure for Egyptian workers

Mohamed

El-Ansary

El-Aziz³

2018

INDUSTRIAL HEALTH

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Crystalline free silica is considered as a lung carcinogen and the occupational exposure to its dust is a health hazard to workers employed in industries that involve ores of mineral dust. In Egypt, thousands of people work under conditions of silica dust exposure exceeding the occupational exposure limit, as a result the monitoring of this occupational exposure to crystalline silica dust is required by government legislation. The assessment of the later is a multi-phase process, depend on workplace measurements, quantitative analyses of samples, and comparison of results with the permissible limits. This study aims to investigate occupational exposure to crystalline silica dust at 22 factories in Egypt with different industrial activities like stone cutting, glass making, ceramic, and sand blasting. Dust samples were collected from work sites at the breathing zone using a personal sampling pump and a size-selective cyclone and analyzed using FTIR. The sampling period was 60–120 min. The results show that the exposure at each of the industrial sectors is very much higher than the current national and international limits, and that lead to a great risk of lung cancer and mortality to workers.

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Section: Discussionmentioning

confidence: 66%

Determination of crystalline silica in respirable dust upon occupational exposure for Egyptian workers

Mohamed

El-Ansary

El-Aziz³

2018

INDUSTRIAL HEALTH

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“…Diesel particulate matter has toxic effects on the lungs, heart, kidney, placenta, brain and liver. 9 Respirable DPM is now an emerging concern in the mining workplace, and it is also of concern in domestic and industrial sites. Results from multiple studies at occupational sites have led to regulatory bodies considering the adoption of stringent threshold limit values or occupational exposure limits.…”

Section: Introductionmentioning

confidence: 99%

Occupational Respirable Mine Dust and Diesel Particulate Matter Hazard Assessment in an Underground Gold Mine in Ghana

Mensah

Mensah-Darkwa

Drebenstedt

et al. 2020

Journal of Health and Pollution

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ResearchBackground. Underground miners can experience occupational health diseases due to exposure to particulate matter hazards. Objectives. The aim of the present study was to examine occupational exposures of underground miners to dust and diesel particulate matter and to identify exposure groups with high potential to develop associated health effects due to the presence of dust and diesel particulate matter (DPM) hazards in an underground gold mine in Ghana. Methods. Purposive sampling was employed using gravimetric air samplers over an 8-hour time weighted average period. The National Institute for Occupational Safety and Health (NIOSH) analytical Chapter Q and 5040 were used in determining crystalline silica dust and diesel particulate matter fractions, respectively. Structured questionnaires were administered to gather data on workers' level of awareness to dust and DPM exposures. Results. It was found that 41% of the sampled groups were exposed to higher crystalline silica levels above the (NIOSH) permissible exposure limit (PEL) level of 0.05 mg/m 3 . For DPM, 49% of these groups had exposures above the Mine Safety and Health Administration (MSHA) PEL level of 160 µg/m 3 . Among the 94 mine workers who responded to this study, 62% were found to be aware of the presence and hazardous nature of silica dust, 28% had minimal knowledge and the remaining were found to be unaware. Conclusions. There are varying levels of dust and DPM due to the presence of silica-bearing rocks, the production of diesel fumes and inefficiencies of available mitigation measures. Research carried out over the past decades has found confirmed cases of silicosis and lung cancer due to high dust exposure levels. Rock drillers, blast men and shotcrete operators were found to be exposed to higher levels of dust and diesel particulate matter and are at greater risk of silicosis.

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“…Residents living near sand and gravel quarries and processing plants are potentially exposed to respirable crystalline minerals including quartz and other phases. Long-term inhalation exposure to respirable crystalline silica can cause silicosis and brosis diseases (Soutar et al, 2000;Naghizadeh et al, 2011;Park et al, 2013;Verma et al, 2014). However, the hazardous minerals are not the only toxic factors affecting the air quality around these mine sites.…”

Section: Introductionmentioning

confidence: 99%

Airborne dust particles originated from sand and gravel quarries: Mineralogical, geochemical, and size distribution constraints on their potential health impacts

Menhaje-Bena

Modabberi

Bakand

et al. 2023

Preprint

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Dust particles derived from sand and gravel mining have been considered as one of the possible sources of suspended particles in Tehran, the capital city of Iran. In this research, the size, morphological, and geochemical characteristics of the airborne particles originated from open mines were investigated. Twenty-two samples from different heights (3 to 21m) were collected from a sand and gravel quarry in Shahriar as the representative of the numerous quarries in western Tehran. The selected samples were further analyzed using X-ray powder diffraction (XRD) and Scanning Electron Microscopy with Energy Dispersive X-Ray Spectroscopy (SEM-EDS). The main mineralogy of airborne dust was dominated by quartz, followed by albite and calcite. The size distribution of deposited particles at different heights ranged from 0.05 µm to 100 µm and about 80% of them were respirable (< 10 µm) and available for transfer through the atmosphere. Si/Al ratios fall mainly into a range between 4 and 10. About 80% of the total particles are below 10 µm. Most nanoparticles were settled into agglomerated forms.

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Exposure Assessment to Dust and Free Silica for Workers of Sangan Iron Ore Mine in Khaf, Iran

Cited by 5 publications

References 9 publications

Determination of crystalline silica in respirable dust upon occupational exposure for Egyptian workers

Determination of crystalline silica in respirable dust upon occupational exposure for Egyptian workers

Occupational Respirable Mine Dust and Diesel Particulate Matter Hazard Assessment in an Underground Gold Mine in Ghana

Airborne dust particles originated from sand and gravel quarries: Mineralogical, geochemical, and size distribution constraints on their potential health impacts

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