بررسی غلظت باقی مانده آفت کش دیازینون در منابع آب زیرزمینی دشت همدان-بهار در سال 1393

نوع مقاله: مقالات پژوهشى اصیل کمی و کیفی

نویسندگان

1 کارشناس ارشد، گروه محیط‌زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران.

2 دانشیار، گروه محیط‌‌زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران.

چکیده

زمینه و هدف:رشد روزافزون جمعیت و نیاز به افزایش تولید محصولات کشاورزی، باعث توسعه کاربرد آفت ‌کش‌ها شده است. از این‌رو سلامتی بشر به‌دلیل وجود باقی‌مانده این ترکیبات در محیط از جمله منابع آب سطحی و زیرزمینی با مخاطره جدی مواجه شده است. لذا مطالعه حاضر با هدف تعیین غلظت باقی‌مانده آفت‌کش دیازینون در منابع آب زیرزمینی دشت بهار همدان در سال 1393 انجام گرفت.
مواد و روش‌ها:پس از بازدید میدانی و انتخاب 20 ایستگاه در سطح دشت بهار، نمونه‌برداری از آب زیرزمینی در فصل تابستان انجام گرفت. نمونه‌ها با استفاده از روش استخراج فاز مایع آماده‌ و غلظت باقی‌مانده سم به‌وسیله دستگاه اسپکتروفتومتر در 3 تکرار خوانده شد. تجزیه و تحلیل داده‌ها با استفاده از نرم‌افزار آماری SPSS (نسخه 20) و آزمون‌های Kolmogrov-Smirnov، one-way ANOVA، One Sample T Test و Pearson's Correlation Coefficient انجام شد.
یافته‌ ها: میانگین غلظت سم دیازینون در نمونه ‌های آب زیرزمینی دشت بهار برابر با 0/06±0/23 میلی‌گرم در ‌لیتر بود. نتایج مقایسه میانگین غلظت باقی‌مانده سم دیازینون در نمونه ‌ها با رهنمود WHO نیز بیان‌گر آن بود که میانگین غلظت باقی‌مانده سم در منابع آب زیرزمینی از حد مجاز بیش‌تر است.
نتیجه‌ گیری: میانگین غلظت باقی‌مانده سم دیازینون در نمونه‌ های آب‌ زیرزمینی دشت همدان- بهار در فصل تابستان سال 1393 از رهنمود WHO (0/10 میلی‌گرم در لیتر) بیش‌تر است. بنابراین استحصال از منابع آب زیرزمینی این دشت به‌ منظور شرب و یا سایر کاربری‌ ها از نظر میانگین غلظت باقی‌مانده دیازینون مخاطره آمیز است.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of Diazinon Residue in Groundwater Resources of Hamedan-Bahar Plain in 2014

نویسندگان [English]

  • Arezoo Khalijian 1
  • Soheil Sobhanardakani 2
  • Mehrdad Cheraghi 2
1 M.Sc. Department of the Environment, School of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran.
2 Associate Professor, Department of the Environment, School of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran.
چکیده [English]

Background & Objective: Increasing population growth, and therefore, increasing requirements for development of the agricultural productions, lead to be overused the pesticides. So, their residues in environment, particularly surface and groundwater resources, create human health risks. Therefore due to the serious risk to human health, this study was carried out for assessing the diazinon residues in groundwater samples of Hamedan-Bahar Plain in 2014.
Material and Methods: Water samples were collected from 20 stations along the Hamedan-Bahar Plain in summer 2014. After preparation and processing the samples in the laboratory according to liquid phase extraction, diazinon residues in samples were determined using a spectrophotometric method in three replications. All statistical analyses were performed by SPSS 20 software using Kolmogrov-Smirnov, one-way ANOVA, One Sample T Test and  Pearson's Correlation Coefficient.
Results:The results showed that the mean concentration of diazinon residues in samples was 0.23±0.06 µg/mL-1, being upper than the Maximum Contaminant Levels (MCLs) provided by the WHO.
Conclusion:Since based on WHO guideline the mean concentrations of diazinon residues in groundwater resources of Hamedan-Bahar Plain were upper than MCLs, therefore; exploitation of water for drinking has adverse effect on consumers' health. In this regards, concerning increased use of agricultural inputs especially pesticides, regular periodic monitoring of chemical pollutants content in groundwater resources of study area is recommended.

کلیدواژه‌ها [English]

  • Diazinon
  • Organophosphorus Pesticide
  • Hamedan-Bahar Plain
  • Groundwater Resources
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