Trace Metals and Hydrocarbons in Sediments of the Beaufort Lagoon, Northeast Arctic Alaska, Exposed to Long-term Natural Oil Seepage, Recent Anthropogenic Activities and Pristine Conditions

نویسندگان

  • A Sathy Naidu
  • John J Kelley
  • M Indira Venkatesan
چکیده

...........................................................................................................................................1 Background/Relevance to Framework Issues..................................................................................3 Hypothesis And Objectives..............................................................................................................5 Material And Methods .....................................................................................................................5 Results..............................................................................................................................................8 Discussion........................................................................................................................................8 Trace Metal Studies...................................................................................................................9 Trace Metal Distribution Pattern:..............................................................................................9 Acknowledgements........................................................................................................................18 Publications and Talks Presented at International Conferences, Civic Bodies and CMI Annual Research Review............................................................................................................................19 References......................................................................................................................................20 Executive Summary .......................................................................................................................23

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Investigation on anthropogenic and natural share of heavy metals in surface sediments of Shadegan wetland

Accumulation of trace metals in sediment can cause severe ecological impacts. The present study determines the elemental concentrations and chemical partitioning of heavy metals in surface sediment of Shadegan wetland. Shadegan wetland is one of the most important wetlands in southwest of Iran and it is in Ramsar-listed wetlands. For this purpose, 7 sampling stations were selected for sediment ...

متن کامل

Synthesis of Time-interval Changes in Trace Metals and Hydrocarbons in Nearshore Sediments of the Alaskan Beaufort Sea: A Statistical Analysis

Table 2. Summary of the mean concentrations (ng/g THg, % Fe, and g/g rest of the metals) and related statistics for the sediment trace metals (values normalized to Fe) by regions and year of sampling.. Table 3. Time-interval differences in the mean concentrations of trace metals [not normalized to iron (Fe)] in Table 6. Correlations between environmental parameters, PCA factor scores, and meta...

متن کامل

Composition and Origins of Polycyclic Aromatic Hydrocarbons in the Mackenzie River and on the Beaufort Sea Shelf

Polycyclic aromatic hydrocarbon (PAH) concentrations in suspended particulate samples from the Mackenzie River delta and shelf sediments from the Beaufort Sea are higher than expected for a pristine area. Low concentrations of combustion PAHs indicate that anthropogenic inputs are low. Alkyl PAH distributions indicate that a significant component of the lower molecular weight parent (unsubstitu...

متن کامل

Trace Metals and Hydrocarbons in Sediments of Elson Lagoon (Barrow, Northwest Arctic Alaska) as Related to the Prudhoe Bay Industrial Region

....................................................................................................................... 1 Background and Relevance to Framework Issues .......................................................... 2 Study Objectives/Hypotheses ........................................................................................ 7 Materials and Methods ...............................

متن کامل

Ubiquitous Presence and Novel Diversity of Anaerobic Alkane Degraders in Cold Marine Sediments

Alkanes are major constituents of crude oil and are released to the marine environment by natural seepage and from anthropogenic sources. Due to their chemical inertness, their removal from anoxic marine sediments is primarily controlled by the activity of anaerobic alkane-degrading microorganisms. To facilitate comprehensive cultivation-independent surveys of the diversity and distribution of ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006