بررسی کیفیت منابع آب شرب زیرزمینی از دیدگاه هیدروژئوشیمیایی، مطالعه موردی: شهرستان سراب

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد مهندسی بهداشت محیط، دانشکده بهداشت، کمیته تحقیقات دانشجویی دانشگاه علوم پزشکی تبریز، تبریز، ایران

2 دانشیار گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تبریز، تبریز، ایران

3 استادیار گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تبریز

4 کارشناس شرکت آب و فاضلاب روستایی استان آذربایجان شرقی

چکیده

آب‌های زیرزمینی برای بسیاری از جوامع مهم‌ترین منبع تأمین آب آشامیدنی هستند. نظر به اینکه کیفیت آب به‌طور مستقیم سلامت مصرف‌کنندگان را تحت تأثیر قرار می‌دهد، بررسی کیفیت آب و عوامل مؤثر از نظر هیدروژئوشیمیایی ضروری به‌نظر می‌رسد. در این پژوهش 25 روستا از شهرستان سراب در استان آذربایجان شرقی انتخاب و پارامترهای فیزیکوشیمیایی همراه با 20 فلز سنگین در منابع آب آشامیدنی آنالیز شد. نتایج حاصل ضمن پهنه‌بندی و تفسیر در محیط Arc GIS با استفاده از آزمون تحلیل مؤلفه‌های اصلی و آنالیزهای خوشه‌ای، تحلیل و روستاهای مورد مطالعه دسته‌بندی شدند. بر اساس نتایج حاصل از مطالعه، میانگین و دامنه EC برابر 812 و 220 تا ۲۹۹۰ میکروزیمنس بر سانتی‌متر اندازه‌گیری شد. بالا بودن املاح محلول در غرب شهرستان از نکات قابل توجه بود. غلظت آرسنیک در دو مورد از نمونه‌ها و جیوه در یکی از نمونه‌ها بالا بود. آزمون تحلیل مؤلفه‌های اصلی نشان داد که آب‌های بررسی شده از لحاظ پارامترهای فیزیکوشیمیایی در سه دسته قابل تقسیم‌بندی هستند. با توجه به برخی مشکلات کیفی مشاهده شده، جایگزین کردن برخی منابع تأمین با منابع جدید و انجام مطالعه‌ای جامع در خصوص آنومالی آرسنیک و اثرات بهداشتی آن بر روی سلامت مصرف‌کنندگان در روستاهای آلوده توصیه می‌شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Groundwater Quality Assessment from a Hydrogeochemical Viewpoint A Case Study of Sarab County

نویسندگان [English]

  • Mojtaba Pourakbar 1
  • Mohammad Mosaferi 2
  • Mohammadshaker Khatibi 3
  • Adel Moradi 4
1 MSc Student of Environmental Engineering, Student Research Committee, Tabriz University of Medical Sciences, Tabriz
2 Assoc. Prof. of Environmental Engineering, Student Research Committee, Tabriz University of Medical Sciences, Tabriz
3 Assist. Prof. of Environmental Engineering, Student Research Committee, Tabriz University of Medical Sciences, Tabriz
4 Environmental Engineer, East Azarbayejan Rural Water and Sewage Co., Tabriz
چکیده [English]

Groundwater resources are the most important sources of drinking water in many communities. The direct impact of water quality on public health warrants a thorough investigation of water quality and the factors involved from a hydrogeochemical viewpoint. In the present study, 25 villages of Sarab County in East Azerbayejan Province were selected and the quality of the drinking water supplied in the region was analyzed in terms of its physicochemical parameters along with heavy metals content including 20 different metals. The results were plotted using the Arc GIS for interpretation. The selected villages were subsequently categorized using the Principal Component Analysis (PCA) and the Hierarchical Cluster Analysis. Based on the result of study, the EC of the drinking water ranged over 220-2990µs/cm with an average value of 812.  A remarkable finding was the high level of dissolved solids in the Western parts of the study area. Arsenic in two villages and mercury in one village were also high. PCA results showed that the drinking water in the pilot villages could be divided into three categories. Based on certain water quality problems observed ij the region, it is suggested that substitute water supplies should be identified for some of the villages while a comprehensive investigation is also carried out on the arsenic anomaly and its health effects on water consumers in the contaminated villages.

کلیدواژه‌ها [English]

  • GIS
  • Groundwater
  • heavy metals
  • Hydrogeochemical
  • Multivariate Statistic
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