EXTRACTION OF RADIUM ISOTOPES FROM SOME COASTAL SEAWATER SAMPLES IN EGYPT METHOD VALIDATION
نویسندگان
چکیده
منابع مشابه
extraction and acetylation of purified trypsin from bovin pancreas and study of some its physico-chemical properties
آنزیم تریپسین در شرایط قلیایی ناپایدار می باشد .و فعالیت پروتئولیتیکی تریپسین منجربه خود هضمی آن در جایگاههای خاصی می گردد. بنابر این آنزیمی با ناپایداری بالا محسوب میگردد. در سالهای اخیر موفق شدند که با ایجاد تغیرات شیمیایی با اضافه کردن فلزات خاص ، کلسیم و یا عمل استیلاسیون منجر به افزایش پایداری آنزیم تریپسین گردند. مطالعات در حال حاضر نشان می دهد که تریپسین استیله شده فعالیت آنزیمی خود را ...
15 صفحه اول228Ra and 226Ra in Coastal Seawater Samples from the Ubatuba Region - Brazilian Southeastern Coastal Region
O presente trabalho apresenta os resultados de Ra e Ra obtidos durante o 4 experimento de intercomparação referente à descarga submarina de água subterrânea (Submarine Groundwater Discharge, SGD) realizado em Ubatuba (SP), em novembro/2003. Este experimento visava testar, em um sistema de rochas cristalinas fraturadas, as diferentes metodologias existentes de determinação da SDG. Embora com obj...
متن کاملOptimizing of microfunnel-supported liquid-phase microextraction for the extraction of chlorophenoxyacetic acids in seawater samples
Abstract In this study, microfunnel-supported liquid-phase microextraction method (MF-LPME) was optimized and applied for the determination of some chlorophenoxyacetic acids (CPAAs) from natural water samples. The extraction was performed with 540 μL toluene which was retained at the surface of the sample solution using an upside down microfunnel. After the extraction, toluene was moved in...
متن کاملLarge volume (20L+) filtration of coastal seawater samples.
The workflow begins with the collection of coastal marine waters for downstream microbial community, nutrient and trace gas analyses. For this method, samples were collected from the deck of the HMS John Strickland operating in Saanich Inlet. This video documents large volume (> or = 20 L) filtration of microbial biomass, ranging between 0.22 microm and 2.7 microm in diameter, from the water co...
متن کاملSmall volume (1-3L) filtration of coastal seawater samples.
The workflow begins with the collection of coastal marine waters for downstream microbial community, nutrient and trace gas analyses. For today's demonstration samples were collected from the deck of the HMS John Strickland operating in Saanich Inlet. This video documents small volume (approximately 1 L) filtration of microbial biomass from the water column. The protocol is an extension of the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Al-Azhar Bulletin of Science
سال: 2014
ISSN: 1110-2535
DOI: 10.21608/absb.2014.23796