A major biopolymeric component to dissolved organic carbon in surface sea water

Nature ◽  
1997 ◽  
Vol 387 (6629) ◽  
pp. 166-169 ◽  
Author(s):  
Lihini I. Aluwihare ◽  
Daniel J. Repeta ◽  
Robert F. Chen
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Sea Water

The determination of dissolved organic carbon in sea water

1981 ◽  
Vol 1 (1) ◽  
pp. 28-30 ◽  
Author(s):  
Peter J. Wangersky
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Sea Water

scholarly journals Globally Carbon Cycle and Measurement of Dissolved Organic Carbon in Sea Water.

1994 ◽  
Vol 4 (1) ◽  
pp. 1-18
Author(s):  
Yoshimi SUZUKI ◽  
Hiroshi ITO
Keyword(s):  
Organic Carbon ◽  
Carbon Cycle ◽  
Dissolved Organic Carbon ◽  
Sea Water

Seasonal Changes in the Organic Forms of Carbon, Nitrogen and Phosphorus in Sea Water at E1 in the English Channel During 1968

1973 ◽  
Vol 53 (3) ◽  
pp. 695-703 ◽  
Author(s):  
M. W. Banoub ◽  
P. J. leB. Williams
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Particulate Organic Carbon ◽  
Dissolved Organic Nitrogen ◽  
Organic Nitrogen ◽  
Sea Water ◽  
Organic Phosphorus ◽  
English Channel ◽  
Dissolved Organic Phosphorus ◽  
Nitrogen And Phosphorus

A seasonal survey of particulate and dissolved organic material was made at E1 in the English Channel during 1968. The average integral mean values were: dissolved organic carbon 65 μg-at C/l (780 μg C/l); dissolved organic nitrogen 4·6 μg-at N/l (64 μg N/l); dissolved organic phosphorus 0·12 μg-at P/l (3·8 μg P/l); particulate organic carbon 190 μg C/l and particulate organic nitrogen 21 μg N/l. Dissolved organic carbon and the particulate organic carbon and nitrogen showed increases subsequent to the spring bloom; such increases were less evident in the dissolved organic nitrogen results and not apparent in those of dissolved organic phosphorus.Analyses were also made in March and June in 1969 at two other stations in the English Channel, in addition to E1. The results from the three stations were basically similar.

METHODS FOR THE DETERMINATION OF DISSOLVED ORGANIC CARBON AND NITROGEN IN SEA WATER

1934 ◽  
Vol 67 (1) ◽  
pp. 132-144 ◽  
Author(s):  
AUGUST KROGH ◽  
ANCEL KEYS
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Sea Water ◽  
Carbon And Nitrogen

Comparison of two methods for measuring dissolved organic carbon in sea water

Nature ◽  
1992 ◽  
Vol 356 (6371) ◽  
pp. 696-698 ◽  
Author(s):  
Hiroshi Ogawa ◽  
Norio Ogura
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Sea Water

CHARACTERISATION OF DISSOLVED ORGANIC CARBON (DOC) LEACHED FROM LEAVES IN WATER

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Markus Heryanto Langsa
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Total Organic Carbon ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrolysis Gas ◽  
Pyrolysis Gas Chromatography ◽  
Chromatography Mass Spectrometry ◽  
Pinus Radiate

<p>Penelitian ini bertujuan untuk menentukan senyawa organik khususnya organic karbon terlarut (DOC) dari dua spesies daun tumbuhan (<em>wandoo eucalyptus </em>and <em>pinus radiate, conifer</em>) yang larut dalam air selama periode 5 bulan leaching eksperimen. Kecepatan melarutnya senyawa organic ditentukan secara kuantitatif dan kualitatif menggunakan kombinasi dari beberapa teknik diantaranya Total Organic Carbon (TOC) analyser, Ultraviolet-Visible (UV-VIS) spektrokopi dan pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS).</p><p>Hasil analisis DOC dan UV menunjukkan peningkatan yang tajam dari kelarutan senyawa organic di awal periode pengamatan yang selanjutnya berkurang seiring dengan waktu secara eksponensial. Jumlah relatif senyawa organic yang terlarut tergantung pada luas permukaan, aktifitas mikrobiologi dan jenis sampel tumbuhan (segar atau kering) yang digunakan. Fluktuasi profil DOC dan UV<sub>254</sub> disebabkan oleh aktifitas mikrobiologi. Diperoleh bahwa daun kering lebih mudah terdegradasi menghasilkan senyawa organic dalam air dibandingkan dengan daun segar. Hasil pyrolysis secara umum menunjukkan bahwa senyawa hidrokarbon aromatic dan fenol (dan turunannya) lebih banyak ditemukan pada residue sampel setelah proses leaching kemungkinan karena adanya senyawa lignin atau aktifitas humifikasi mikrobiologi membuktikan bahwa senyawa-senyawa tersebut merupakan komponen penting dalam proses karakterisasi DOC.</p>

Sign in / Sign up

Export Citation Format

Share Document