اندازه گیری غلظت مواجهه با BTEX و ارزیابی ریسک بهداشتی در مراکز چاپ و تکثیر

خلاصه فارسی

در این مطالعه مقطعی در اردبیل، تعداد 53 مرکز چاپ و تکثیر مورد نمونه برداری قرار گرفت و در ان ترکیبات BTEX مورد ارزیابی قرار گرفت. غلظت بنزن تولوئن اتیل بنزن و زایلن در مراکز چاپ و تکثیر به ترتیب 93.6±63.2 – 150.6±99.2 – 34.3±16.8 و 29.5±15.2 میکرو گرم بر متر مکعب به دست امد. احتمال خطر بنزن در هوای داخل در مراکز چاپ و تکثیر بیشتر از 1 بدست امد که نشان می دهد که خطرات غیر سرطان زا مرتبط با مواجهه با این ترکیبات قابل توجه است.در کل نتایج نشان داد در بین ترکیبات، غلظت تولوئن بیشتر از بقیه بوده اما احتمال خطر مواجهه با بنزن بیشتر از بقیه بود.

عنوان انگليسی

Exposure to BTEX concentration and the related health risk assessment in printing and copying centers

خلاصه انگلیسی

This study was derived to investigation of BTEX (benzene, toluene, ethylbenzene, xylenes) concentrations in printing and copying centers (PCCs) in Ardabil city of Iran. Fifty-three PCCs were randomly selected from all the 136 number of PCCs and BTEX was sampled form their indoor air. The results showed that the concentration of BTEX in the indoor air PCCs is lower than the OELs (occupational exposure limit) in all cases. The obtained mean concentrations of benzene, toluene, ethylbenzene, and xylene were 93.6±63.2, 150.6±99.2, 34.3±16.8, and 29.5±15.2 μg/m3 respectively. Type of printer, number of printing and copying device, and type of ventilation system had significant influence on the BTEX concentration. The mean inhalation lifetime cancer risk (LTCR) value for benzene and ethylbenzene in the indoor air of the PCCs with LaserJet and inkjet printers was 44.4 × 10−6 and 153.3 × 10−6, and 23.4×10−6 and 54.2× 10−6, respectively, which were higher than EPA (Environmental Protection Agency) and World Health Organization (WHO) recommended limits. The hazard quotient (HQ) of benzene in the indoor air of the PCCs with inkjet printers was >1, which indicates that the non-carcinogenic risks associated with exposure to these compounds are considerable

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