Occupational noise, chemical exposure and hearing loss among workers in paint manufacturing factory / Nur Nazihah Mohamad Saidi

Mohamad Saidi, Nur Nazihah (2011) Occupational noise, chemical exposure and hearing loss among workers in paint manufacturing factory / Nur Nazihah Mohamad Saidi. [Student Project] (Unpublished)

Abstract

Introduction: Studying the impact of combined exposure to both industrial pollutants such as noise and Volatile Organic Compound (VOC) on hearing was scarcely pointed. The objective was to study the association between noise and VOC exposure to the level of hearing impairment among workers who exposed to both noise and a mixture of organic solvents simultaneously in a paint manufacturing factory, Jotun Paint (M) Sdn Bhd in Shah Alam. Methodology: In this comparative cross-sectional study, simple random sampling method used to select the subjects. The exposed group (Group A) consisted of 31 workers who work in the Production Area. The unexposed group (Group B) consisted of 31 workers who work in the Administration Area. The unexposed group was matched to exposed group in age, sex, years working in this factory, job task, hobbies, previous employment, previous medical history, present medical condition and exposed to both noise and VOC through the questionnaire distribution. Noise level at the work places was carried out using a Calibrated Precision Sound Level Meter Type 407703. Personal noise dose of each subject was measures using Dosimeter Model EG3 and EG4 while Environmental Monitor Model EVM-7 used to measure the VOC level. Level of noise had been measured for 8 hours during working hour. All studied samples were subjected to complete Audiometric Test using pure tone Audiometer (Silent Cabin Model 'S'). The result from the audiogram was used as sign of hearing loss. Results: The level of VOC exposure in both solvent and water based area were exceed the permissible limit stated in Code of Practice on Indoor Air Quality, 201 O with 7.54ppm and 6.0ppm respectively. Levels of noise exposure below the action level which complying with the standard in Factories and Machinery (Noise Exposure) Regulations 1989. Hearing level was comparable in group A & B. Based on the Pearson Correlation Test conducted, there is linear relationship between noise, VOC and hearing loss (p<0.05). From the outcome of the test of Multiple Regression conducted, it has been proved that the level of VOC exposure significantly causes the effect, and it is the main factor of affecting hearing level in this study (p<0.042). The T -Test conducted proved the mean difference between level of hearing of exposed and unexposed group are statistically significant (p<0.001 ). It shows that the exposed group was developing hearing loss due to the exposure to high VOC level while the unexposed group is not having any ear damage because they did not exposed to high VOC level in anyway. Conclusion: Workers exposed to both noise and VOC suffered from the highest proportion of hearing loss compared to those not exposed to both noise and VOC factor, therefore it can be concluded that solvents may interact synergistically with noise. (Nature and Science 2010, 8(6):95-99). Hierarchy of control is recommended in reducing the VOC exposure among both A & B group.

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Mohamad Saidi, Nur Nazihah
2008387271
Contributors:
Contribution
Name
Email / ID Num.
Thesis advisor
Abd Rahman, Nasaruddin
UNSPECIFIED
Thesis advisor
Mohd Tahir, Mohd Pozi
UNSPECIFIED
Subjects: R Medicine > RA Public aspects of medicine > Public health. Hygiene. Preventive Medicine
T Technology > TD Environmental technology. Sanitary engineering > Environmental pollution
T Technology > TD Environmental technology. Sanitary engineering > Air pollution and its control
T Technology > TD Environmental technology. Sanitary engineering > Noise pollution. Noise and its control
Divisions: Universiti Teknologi MARA, Selangor > Puncak Alam Campus > Faculty of Health Sciences
Programme: Bachelor in Environmental Health and Safety
Keywords: Hearing Loss, Noise, Volatile Organic Compound
Date: May 2011
URI: https://ir.uitm.edu.my/id/eprint/53203
Edit Item
Edit Item

Download

[thumbnail of 53203.PDF] Text
53203.PDF

Download (1MB)

Fulltext

Fulltext is available at:
  • Bilik Koleksi Harta Intelek, Unit Terbitan Bersiri & Elektronik, PTAR Puncak Alam

ID Number

53203

Indexing

|

Statistic

Statistic details