A new analytical approach for humin determination in sediments and soils

被引：9

作者：

Calace, N. ^{[1
]}

Petronio, B. M. ^{[1
]}

Persia, S. ^{[1
]}

Pietroletti, M. ^{[1
]}

Pacioni, D. ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy

来源：

TALANTA | 2007年 / 71卷 / 03期

关键词：

humin; separation; microwave oven;

D O I：

10.1016/j.talanta.2006.06.040

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work a new analytical approach is proposed for the recovery of humin present in soil and sediments. The procedure is based on microwave oven treatment for humin deashing. In this way both the treatment time and the concentration of the HCl/HF mixture are significantly reduced (minutes rather than hours, 10% rather than concentrated). By means of the proposed scheme organic matter present in sediment and soil samples can be subdivided into the different fractions (hydrophobic and hydrophilic compounds, fulvic and humic acids, humin) making up the balance of organic carbon. Results obtained for samples characterised by different organic carbon content showed a loss of carbon ranging between 20% and 30%, consistent with previous reports about humin deashing. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1444 / 1448

页数：5

共 34 条

[1] WET ASHING OF SOME BIOLOGICAL SAMPLES IN A MICROWAVE OVEN [J].