Measurement of Wood Dust Particle Size by Optical Microscopy Technique and Long-Term Effect on Sawmill Workers: A Random Study

Kulkarni, C M; Karigoudar, Mahesh H; Aithala, Manjunatha

doi:10.22159/ajpcr.2016.v9s3.15071

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…The number of woodworking machines has increased greatly since the beginning of the industrial revolution, and an increase in the demand for sawn softwood or hardwood products have resulted in companies building faster machines to increase the speed of production, resulting in finer dust particles being emitted than in the past [5]. The introduction of engineering controls by some industries since 1950 have considerably lessened exposure among workers; however, the engineering controls, even when properly adhered to, may not be 100% effective in reducing the exposure below the OEL, because the sander can generate a dust level that may be more difficult to control [5] Sawmill workers are exposed to wood dust particles of different sizes which may cause respiratory health effects [25]. An assessment of the health effects of exposure among humans and the interpretation of the concentration of the measured results may be difficult to undertake due to the variation in the wood dust particles which differs in physical or chemical property [26].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of occupational exposure to wood dust among sawmill workers within the Gert Sibande District Municipality, South Africa

Rathipe¹,

Raphela²

2022

Ann Agric Environ Med.

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Introduction andObjective. Wood dust is regarded as one of the human carcinogen based on an increased risk of nasal and sinonasal cancer. This study was conducted in two sawmills to measure and determine the time-weighted average (TWA) exposure level to wood dust, and compare the results with the South African occupational exposure limit (OEL). Materials and method. Personal and area respirable and total inhalable wood dust samples were collected using calibrated Giliair-3 personal air sampling pump (Sensidyne, USA). Data was analysed using Microsoft Office Excel 2019 Analysis Tool Pak for a summary of descriptive statistics. Both the geometric means and standard deviation as well as the minimum and maximum values were calculated. Results. The geometric mean = GM (geometric standard deviation = GSD) for personal respirable wood dust exposure at sawmill A was 0.9(4.8) mg/m 3 while at sawmill B -0.57(0.75) mg/m 3 . The GM(GSD) for personal total inhalable wood dust exposure at sawmill A was 0.37(0.94) mg/m 3 while at sawmill B -1.19(16.91) mg/m 3 . Besides that, the GM(GSD) for area respirable wood dust at sawmill A was 0.13(0.09) mg/m 3 , while at sawmill B -0.8(0.6) mg/m 3 . Likewise, the GM(GSD) for area total inhalable wood dust at sawmill A was 0.13(0.16) mg/m 3 while at sawmill B -0.54(0.55) mg/m 3 . Conclusions. Results for the majority of samples were below the OEL. Workers smoking tobacco or cigarettes should be encouraged to stop smoking since smoking, especially when associated with exposure to wood dust, may increase the risk of respiratory health symptoms

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Section: Introductionmentioning

confidence: 99%

Evaluation of occupational exposure to wood dust among sawmill workers within the Gert Sibande District Municipality, South Africa

Rathipe¹,

Raphela²

2022

Ann Agric Environ Med.

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On the use of prickly pear seed fibres as reinforcement in polylactic acid biocomposites

et al. 2021

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Knowledge and attitudes about vitamin D and sunlight exposure in premenopausal women living in Jeddah, and their relationship with serum vitamin D levels

Zareef

Jackson

2021

J Health Popul Nutr

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Background Saudi women are at risk of vitamin D deficiency because they are fully covered by traditional clothing and because of their indoor lifestyle. The latest national study reported that vitamin D deficiency (serum 25(OH)D < 50 nmol/L) affects 72% of young Saudi women. Because little information is available regarding knowledge on vitamin D, attitudes toward sun exposure, and the vitamin D status of premenopausal women in Jeddah, more research is necessary in order to develop effective intervention programs. The purpose of this study is to explore how the relationship between knowledge of vitamin D and attitudes about sun exposure affect the serum 25(OH)D levels in premenopausal Saudi women. Methods This cross-sectional study included 257 women aged 20–50 years attending the primary care clinic in Jeddah, Saudi Arabia. Participants completed questionnaires about socio-demographics, dietary vitamin D intake, attitudes toward sun exposure, and were tested on their knowledge of vitamin D. Serum 25(OH)D was evaluated using chemiluminescent microparticle immunoassay. Results Although 99% of participants had heard of vitamin D and 91% knew that sunlight exposure is a primary source of vitamin D, they also expressed the feeling of having insufficient knowledge regarding vitamin D sources. Furthermore, the majority of participants had negative attitudes toward sun exposure. High fish consumption was associated with a higher level of knowledge regarding vitamin D. The binary logistic regression indicated that low levels of knowledge about vitamin D were associated with low education levels (odds ratio = 0.397, 95% CI = [0.206, 0.765], p = 0.019) and with being married (odds ratio = 0.522, 95% CI = [0.281, 0.971], p = 0.04). In addition, spending time outside in the sun was significantly associated with increased serum 25(OH)D levels (p = 0.006), and the wearing of colored abaya was significantly associated with increased serum 25(OH)D levels (p = 0.008). Conclusion Suboptimal vitamin D status and insufficient knowledge of vitamin D intake sources are common in premenopausal women in Jeddah. Based on this data, health professionals could provide medical intervention to the most vulnerable female patients, as well as offer clear guidelines and information to the general public.

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Measurement of Wood Dust Particle Size by Optical Microscopy Technique and Long-Term Effect on Sawmill Workers: A Random Study

Cited by 3 publications

References 11 publications

Evaluation of occupational exposure to wood dust among sawmill workers within the Gert Sibande District Municipality, South Africa

Evaluation of occupational exposure to wood dust among sawmill workers within the Gert Sibande District Municipality, South Africa

On the use of prickly pear seed fibres as reinforcement in polylactic acid biocomposites

Knowledge and attitudes about vitamin D and sunlight exposure in premenopausal women living in Jeddah, and their relationship with serum vitamin D levels

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