Carbon Isotope Fractionation in the System CO2(gas)—CO2(aqueous)—HCO3−(aqueous)

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Carbon isotope fractionation in protoplanetary disks

We investigate the gas-phase and grain-surface chemistry in the inner 30AU of a typical protoplanetary disk using a new model which calculates the gas temperature by solving the gas heating and cooling balance and which has an improved treatment of the UV radiation field. We discuss inner-disk chemistry in general, obtaining excellent agreement with recent observations which have probed the mat...

متن کامل

Carbon isotope fractionation by Emiliania huxleyi

The ratio of l*C : 13C was measured for Emiliania huxleyi cells grown under a range of irradiances in batch culture. Based on the assumption that HCO, was the carbon source, the maximum discrimination against 13C in the decalcified E. huxleyi cells was 24.6?& at 4.8 mol photons m-* d-l and the minimum discrimination was 17.9?& at 0.5 mol photons m-* d-l. In calcified cells, the range of 13C iso...

متن کامل

Stable Carbon Isotope Fractionation by Methanogens

Introduction: Methanogenic archaea, which consume CO2 and H2, have been considered models for possible life forms on Mars for a long time, even before the discovery of methane in the Martian atmosphere (1-8). Several intensive experimental studies have been conducted to investigate survivability of methanogens under conditions that approach those found on Mars (2, 3, 9). Various potential sourc...

متن کامل

Light-dependent carbon isotope fractionation in the coccolithophorid Emiliania huxleyi

The carbon isotopic composition of marine phytoplankton varies significantly with growth conditions. Aqueous CO2 concentration [CO2] and algal growth rate (m) have been suggested to be important factors determining isotope fractionation («p). Here we examine «p of the coccolithophorid Emiliania huxleyi in relation to CO2 concentration and light conditions in dilute batch cultures. Cells were in...

متن کامل

Carbon isotope fractionation during the anaerobic degradation of acetate

In methanogenic environments Methanosarcinaceae are beside Methanosaetaceae the only acetate-consuming family of archaea and thus important contributors to the formation of the greenhouse gases methane and carbon dioxide. In this study, the carbon isotope fractionation during this process was determined for two species of the Methanosarcinaceae family, M. barkeri and M. acetivorans. The calcula...

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

ژورنال

عنوان ژورنال: Nature

سال: 1967

ISSN: 0028-0836,1476-4687

DOI: 10.1038/2151033a0