بررسی میزان چهار آلاینده فلزی (Ni, V, Co, Fe) و آلاینده‌های آلی (نفتی) در رسوبات خلیج نایبند (خلیج فارس)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری محیط زیست،گروه محیط زیست، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

2 دانشیار، گروه محیط زیست، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

3 استادیار، گروه محیط زیست، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

10.22034/eiap.2023.179869

چکیده

آلاینده‌های فلزی، هیدروکربن‌های نفتی و هیدروکربن‌های آروماتیک (PAHs) از شایع‌ترین آلاینده‌های محیط‌زیست دریاها بشمار می روند. در این مطالعه به بررسی و سنجش آلاینده‌‌های فلزی و آلی خلیج نایبند (خلیج‌فارس) پرداخته شده است. نمونه‌برداری از 20 ایستگاه در زمستان 1397 انجام گرفت. از هر ایستگاه نمونه رسوب جداگانه برای فلزات سنگین و آلاینده‌های نفتی (با 3 تکرار) با گرب Van veen برداشت شد. از دستگاه‌های ICP-MASS مدل Agilent 7500cx برای سنجش فلزات و GC با شناسگر MASS مدل Agilent 6890n برای سنجش هیدروکربن‌های نفتی استفاده شد. داده‌ها با نرم‌افزار SPSS 22 آنالیز شدند. میانگین غلظت فلزات اندازه‌گیری شده آهن، نیکل، وانادیوم و کبالت به ترتیب 7980، 71/19، 90/14 و 71/5 میلی‌‌گرم بر کیلوگرم اندازه‌گیری شد، نتایج به دست آمده در حدود استانداردهای داخلی و جهانی بود اما ایستگاه‌های نزدیک به منطقه عسلویه اختلاف معنی‌داری (P<0.05) را با سایر ایستگاه‌ها نشان دادند. در مورد آلاینده‌های نفتی، میزان کل هیدروکربن‌های نفتی (TPHs) با میانگین mg/kg 33/14 و حداکثر غلظت 16/42 در ایستگاه (19) مجاور اسکله عسلویه و میزان ترکیبات آروماتیک چند حلقه‌ای (PAHs) با میانگین µg/kg 09/223 و حداکثر غلظت 68/657 در ایستگاه (20) اسکله عسلویه ثبت گردید. بر اساس داده ها، خلیج نایبند از نظر ترکیبات TPH دارای سطوح اندک آلودگی (TPH > 15) و از نظر ترکیبات PAHs دارای سطوح متوسطی از آلودگی (PAHs>100) است. اختلاف بین ایستگاه‌های نزدیک به عسلویه و سایر ایستگاه‌ها از نظر میزان آلودگی نشان داد موضوع افزایش تدریجی آلایندگی صنایع و تاثیر آن بر اکوسیستم خلیج نایبند می‌بایست به عنوان یک مساله جدی مورد بررسی و پیگیری قرار گیرد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigating four Metal (Ni, V, Co, Fe) and Organic (Petroleum) Pollutants in the Sediments of Nayband Gulf

نویسندگان [English]

  • Ali Ghanavati Asl 1
  • Seyed Mohammad Bagher Nabavi 2
  • Maryam Mohammadi Roozbahani 2
  • Sima Sabzalipour 3
  • Seyed Masoud Monavari 2
1 PhD student, Department of environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
2 Associate Professor, Department of environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
3 Assistant Professor, Department of environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
چکیده [English]

The most common marine environmental pollutants are metal pollutants, petroleum hydrocarbons, and aromatic hydrocarbons. In the present research, metallic and organic pollutants of Nayband Gulf were investigated. Sampling was done from 20 stations in the winter of 2018. From each station, two sediment samples for organic matter and heavy metals (with 3 replications) were collected and a total of 120 sediment samples were collected using Van Veen Grab. To measure metals and petroleum hydrocarbons, ICP(Agilent7500cx) and GC (Agilent 6890n) devices were used, respectively. Data were analyzed using SPSS 22 software. The mean concentrations (mg/kg) of iron (7980), nickel (19.71), vanadium (14.90), and cobalt (5.71) were measured. Although it did not exceed domestic and international standards, nearby stations Asaluyeh region showed a significant difference (P<0.05) with other stations. The total amount of petroleum hydrocarbons (TPH) with an average of 14.33 mg/kg and the maximum concentration of 42.16 were recorded at a station (19) near Asaluyeh wharf and the amount of polycyclic aromatic compounds (PAH) with an average of 223.09 µg/kg and maximum concentration of 657.68 were recorded at a station (20). Based on the data, Nayband gulf has low levels of pollution (TPH> 15) in terms of TPH compounds and moderate levels of pollution (PAH> 100) in terms of PAH compounds. The difference between stations near Asaluyeh and other stations in terms of pollution shows that the gradual increase of pollution caused by industries and its impact on the functioning of Nayband gulf ecosystem should be considered as a serious issue.
 

کلیدواژه‌ها [English]

  • Nyband bay
  • Petrolium hydrocarbons
  • Heavy metals
  • Pollution
  • Organic
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