تعهد نامه

نوع مقاله : Research Paper

نویسندگان

1 کارشناس ارشد مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران

2 دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران

چکیده

زمینه و هدف: افزایش استفاده از نانوذرات در صنایع سبب ورود ترکیبات مخاطره آمیز به محیط زیست میگردد. سمیت نانوذرات بعلت آزاد شدن مواد سمی به محیط زیست یکی از نگرانیهای جوامع محسوب میگردد، یکی از این ترکیبات نانوذرات اکسید روی می باشد که در این مطالعه سمیت محلول حاوی رنگ Reactive Red120 بعداز فرایند نانوفوتوکاتالیستی UV/ZnOبا استفاده ازآزمون زیستی دافنیا مگنا مورد بررسی قرارگرفت.
مواد و روش ها: این مطالعه از نوع تجربی – کاربردی بوده که در مقیاس پایلوتی انجام شد. LC50 رنگ Reactive Red 120 بعد از فرآیند  UV/ZnOبا روش زیست آزمونی اندازه گیری شد. آزمایش زیست آزمونی با استفاه از نشانگر زیستی دافنیا مگنا انجام شد. سپس جهت بررسی وتجزیه و تحلیل نتایج آزمون تعیین سمیت با استفاده از نرم افزار spssمشخص و  LC50تعیین گردید.
یافته ها: یافته ها نشان داد که مقادیر LC50 در زمان های 24، 48، 72، 96 ساعته بترتیب 73.16، 55.93، 41.32، 30.45میلی گرم در لیتر می باشد. واحد سمیت به ترتیب برابر1.36، 1.78، 2.42و 3.28 می باشد.
نتیجه گیری: نتایج نشان داد که با افزایش زمان تماس ، مقدار LC50 کاهش یافت، که می توان به این نتیجه رسید این ماده رنگزا بعد از فرآیند UV/ZnO دارای سمیت بر روی دافنیامگنا می باشد

کلیدواژه‌ها

عنوان مقاله [English]

The Evaluating of the Toxicity of Reactive Red 120 Dye by Daphnia Magna Bioassay

نویسندگان [English]

  • Pegah Nakhjirgan 1
  • Mohammad Hadi Dehghani 2

1 MSc, Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.

2 Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

چکیده [English]

Background and objective: Increased use of nanoparticles in industries leads to entering hazardous substances to environment. Nanoparticle toxicity due to release of toxic substances into the environment is a concern for communities. One of the common nanoparticles ingredients are zinc oxide. In this study toxicity of the solution containing the Reactive Red 120 dye after Nano-catalytic process UV/ ZnO using biological test Daphnia magna was studied.

Methods: this is a fundamental – practical study, which done on laboratory scale. Toxicity assay tests were carried out using Daphnia magna a bio-indicator. Then results of toxicity tests using SPSS software were analyzed and Lc50were determined.

Results: Results showed that the Lc50 value ​​at 24,48,72,96 hr is 73.16, 55.93, 41.32, 30.45 mg/l and the toxicity unit values are 1.36, 1.78, 2.42, and 3.28, respectively.

Conclusion: the results generally indicated that toxicity increased in process and over time and showed that Reactive Red 120 after UV/ ZnO process was toxic to Daphnia magna.

Paper Type: Research Article

کلیدواژه‌ها [English]

  • UV/ ZnO process
  • Reactive Red 120 dye
  • Bioassay
  • Toxicity
  • Daphnia magna
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