Published July 1989 | Version v1
Report Metadata-only

The measurement of the molecular weight of humic acid by ultracentrifugation

Creators

Description

This report is concerned with the application of ultracentrifuge methods to the determination of humic acid molecular weights. The work has been undertaken as part of the Co-Co club intercomparison exercise on humic acid characterisation. Knowledge of the molecular weight distribution of humic acid will be an important parameter in assessing the likely physical and chemical behaviour under the near-field environment. Molecular weights of a sample of purified Aldrich humic acid have been obtained by sedimentation velocity and sedimentation equilibrium studies using an analytical ultracentrifuge. The results have shown the material to be polydisperse with a weight average molecular weight in the region 2700 to 4000. (author)

Availability note (English)

Available from H.M. Stationery Office, London, price Pound 8.00.

Additional details

Publishing Information

ISBN
0-7058-1539-0
Imprint Pagination
25 p.
Report number
AERE-M--3730

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
21018627
Subject category
S58: GEOSCIENCES; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
HUMIC ACIDS; INTERLABORATORY COMPARISONS; MOLECULAR WEIGHT; RADIOACTIVE WASTE DISPOSAL; RADIONUCLIDE MIGRATION; ULTRACENTRIFUGATION
Descriptors DEC
CENTRIFUGATION; ENVIRONMENTAL TRANSPORT; MANAGEMENT; MASS TRANSFER; ORGANIC ACIDS; ORGANIC COMPOUNDS; SEPARATION PROCESSES; WASTE DISPOSAL; WASTE MANAGEMENT

Optional Information

Contract/Grant/Project number
Contract FI1W/0156